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SAJ error codes explained

What 208 SAJ inverter & battery fault and error codes mean, in plain English, with safe checks you can do and when to call a licensed electrician.

Guide only. This information is a general guide taken from manufacturer documentation. All electrical work must be performed by a licensed electrician. Never open your inverter, battery or switchboard. If you see smoke, smell burning or see damage, keep clear and call 000.

Model guides: SAJ H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · SAJ R6 3-15K-T2 three-phase string · SAJ R6 5-10K-S2/S3 single-phase string (AU)

CodeMessage & meaningModelType
1Fault
Master Relay Error

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
2Fault
Master EEPROM Error

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
3Warning
Master Temperature High Error

The inverter is running too hot, so it has reduced output or paused to protect itself.

What you can do

  • Make sure nothing is stacked against or in front of the inverter, and leave the manufacturer's clearances around it
  • Gently clear dust or leaves from the outside of the vents, without opening the unit or spraying water
  • Let it cool. It normally resumes by itself
  • If it keeps happening on mild days, call us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
4Warning
Master Temperature Low Error

The inverter temperature is below its operating range.

What you can do

  • Wait for temperatures to rise. It should recover by itself
  • If it persists in normal weather, call us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
5Fault
Lost Communication M<->S

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
6Fault
GFCI Device Error

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
7Fault
DCI Device Error

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
8Fault
Current Sensor Error

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
9Warning
Master Phase1 Voltage High

The mains voltage the inverter measured was outside the limits allowed for your network, so it disconnected or reduced output to protect the grid. This is usually a grid condition, not a faulty inverter.

What you can do

  • Wait. The inverter reconnects by itself once voltage is back within limits
  • Note the time of day it happens. If it happens most sunny days, tell us, because it may need a voltage check or a report to your network operator
  • Don't try to change grid protection settings yourself. In Australia they are set to AS/NZS 4777.2 and your network operator's requirements

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
10Warning
Master Phase1 Voltage Low

The mains voltage the inverter measured was outside the limits allowed for your network, so it disconnected or reduced output to protect the grid. This is usually a grid condition, not a faulty inverter.

What you can do

  • Wait. The inverter reconnects by itself once voltage is back within limits
  • Note the time of day it happens. If it happens most sunny days, tell us, because it may need a voltage check or a report to your network operator
  • Don't try to change grid protection settings yourself. In Australia they are set to AS/NZS 4777.2 and your network operator's requirements

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
11Warning
Master Phase2 Voltage High

The mains voltage the inverter measured was outside the limits allowed for your network, so it disconnected or reduced output to protect the grid. This is usually a grid condition, not a faulty inverter. (Phase 2/3 codes apply to three-phase models.)

What you can do

  • Wait. The inverter reconnects by itself once voltage is back within limits
  • Note the time of day it happens. If it happens most sunny days, tell us, because it may need a voltage check or a report to your network operator
  • Don't try to change grid protection settings yourself. In Australia they are set to AS/NZS 4777.2 and your network operator's requirements

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
12Warning
Master Phase2 Voltage Low

The mains voltage the inverter measured was outside the limits allowed for your network, so it disconnected or reduced output to protect the grid. This is usually a grid condition, not a faulty inverter. (Phase 2/3 codes apply to three-phase models.)

What you can do

  • Wait. The inverter reconnects by itself once voltage is back within limits
  • Note the time of day it happens. If it happens most sunny days, tell us, because it may need a voltage check or a report to your network operator
  • Don't try to change grid protection settings yourself. In Australia they are set to AS/NZS 4777.2 and your network operator's requirements

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
13Warning
Master Phase3 Voltage High

The mains voltage the inverter measured was outside the limits allowed for your network, so it disconnected or reduced output to protect the grid. This is usually a grid condition, not a faulty inverter. (Phase 2/3 codes apply to three-phase models.)

What you can do

  • Wait. The inverter reconnects by itself once voltage is back within limits
  • Note the time of day it happens. If it happens most sunny days, tell us, because it may need a voltage check or a report to your network operator
  • Don't try to change grid protection settings yourself. In Australia they are set to AS/NZS 4777.2 and your network operator's requirements

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
14Warning
Master Phase3 Voltage Low

The mains voltage the inverter measured was outside the limits allowed for your network, so it disconnected or reduced output to protect the grid. This is usually a grid condition, not a faulty inverter. (Phase 2/3 codes apply to three-phase models.)

What you can do

  • Wait. The inverter reconnects by itself once voltage is back within limits
  • Note the time of day it happens. If it happens most sunny days, tell us, because it may need a voltage check or a report to your network operator
  • Don't try to change grid protection settings yourself. In Australia they are set to AS/NZS 4777.2 and your network operator's requirements

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
15Warning
Grid Voltage 10Min High

The mains voltage the inverter measured was outside the limits allowed for your network, so it disconnected or reduced output to protect the grid. This is usually a grid condition, not a faulty inverter.

What you can do

  • Wait. The inverter reconnects by itself once voltage is back within limits
  • Note the time of day it happens. If it happens most sunny days, tell us, because it may need a voltage check or a report to your network operator
  • Don't try to change grid protection settings yourself. In Australia they are set to AS/NZS 4777.2 and your network operator's requirements

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
16Warning
OffGrid Output Voltage Low

The backup/EPS (off-grid) output is overloaded or abnormal, so the system has limited or switched off backup power.

What you can do

  • Switch off large appliances on backup circuits
  • Wait for the system to retry (some models lock out for a period after repeated overloads)
  • If it trips with only small loads on, or you suspect a short circuit, call an electrician

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
17Warning
OffGrid Output Short Circuit

The backup/EPS (off-grid) output is overloaded or abnormal, so the system has limited or switched off backup power.

What you can do

  • Switch off large appliances on backup circuits
  • Wait for the system to retry (some models lock out for a period after repeated overloads)
  • If it trips with only small loads on, or you suspect a short circuit, call an electrician

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
18Warning
Master Grid Frequency High

Grid frequency moved outside the allowed range, so the inverter disconnected or reduced output as the standards require.

What you can do

  • Wait for automatic reconnection
  • If it happens often, record the times and contact us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
19Warning
Master Grid Frequency Low

Grid frequency moved outside the allowed range, so the inverter disconnected or reduced output as the standards require.

What you can do

  • Wait for automatic reconnection
  • If it happens often, record the times and contact us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
21Fault
Phase1 DCV Error

The inverter detected too much DC current in its AC output, which the grid standards don't allow, so it disconnected.

What you can do

  • If it happened once and the system recovered, keep an eye on it
  • If it repeats, call us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
22Fault
Phase2 DCV Error

The inverter detected too much DC current in its AC output, which the grid standards don't allow, so it disconnected. (Phase 2/3 codes apply to three-phase models.)

What you can do

  • If it happened once and the system recovered, keep an eye on it
  • If it repeats, call us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
23Fault
Phase3 DCV Error

The inverter detected too much DC current in its AC output, which the grid standards don't allow, so it disconnected. (Phase 2/3 codes apply to three-phase models.)

What you can do

  • If it happened once and the system recovered, keep an eye on it
  • If it repeats, call us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
24Warning
Master No Grid Error

The inverter cannot see a normal mains supply, so it has stopped exporting to the grid (and a hybrid system may switch to backup).

What you can do

  • Check whether the rest of the house (or your neighbours) has power, and check your network operator's outage map
  • Check the switchboard for a tripped solar supply main switch or inverter breaker. Only reset it once. If it trips again, leave it off and call an electrician
  • Wait. Once normal grid power is back, the inverter normally reconnects by itself after its safety checks (often a few minutes)
  • If grid power is normal but the alarm stays, call us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
27Critical
GFCI Error

The inverter measured leakage (residual) current flowing to earth above its safety limit and disconnected. This can indicate damaged insulation somewhere in the system.

What you can do

  • Don't touch cabling or equipment
  • If it happens repeatedly, or together with an insulation/isolation alarm, call an electrician or us promptly

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
28Fault
Phase1 DCI Error

The inverter detected too much DC current in its AC output, which the grid standards don't allow, so it disconnected.

What you can do

  • If it happened once and the system recovered, keep an eye on it
  • If it repeats, call us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
29Fault
Phase2 DCI Error

The inverter detected too much DC current in its AC output, which the grid standards don't allow, so it disconnected. (Phase 2/3 codes apply to three-phase models.)

What you can do

  • If it happened once and the system recovered, keep an eye on it
  • If it repeats, call us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
30Fault
Phase3 DCI Error

The inverter detected too much DC current in its AC output, which the grid standards don't allow, so it disconnected. (Phase 2/3 codes apply to three-phase models.)

What you can do

  • If it happened once and the system recovered, keep an eye on it
  • If it repeats, call us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
31Critical
ISO Error

Insulation resistance between the solar circuits and earth is too low. SAJ notes that on this model an earth fault alarm turns the LED ring red and shows error <31> in the eSAJ Home app.

What you can do

  • Do not touch panels, DC cables, rooftop isolators or the inverter's DC connectors
  • If it clears by itself after the weather dries out, still report it, because repeated alarms point to a developing fault
  • Book an electrician or call us. An insulation test needs specialist equipment
  • If you see smoke, burn marks or smell burning, keep clear and call 000

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
32Fault
Bus Voltage Balance Error

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
33Fault
Master Bus Voltage High

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
34Fault
Master Bus Voltage Low

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
35Warning
Master Grid Phase Error

The inverter saw something abnormal about the grid supply (for example phase loss, imbalance, waveform distortion or loss of mains), so it disconnected as a safety measure.

What you can do

  • Check whether you have a partial power outage (some circuits or phases off)
  • Wait for automatic reconnection after the grid returns to normal
  • If it persists or started after electrical work, call us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
36Fault
Master PV Voltage High Error

The DC voltage coming from the solar panels is higher than the inverter is rated for. Over-voltage can damage the inverter.

What you can do

  • Do not touch the DC isolator or cables unless the manufacturer's owner shutdown tells you to
  • Call us. The string design needs to be checked by a licensed installer

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
37Warning
Master Islanding Error

The inverter saw something abnormal about the grid supply (for example phase loss, imbalance, waveform distortion or loss of mains), so it disconnected as a safety measure.

What you can do

  • Check whether you have a partial power outage (some circuits or phases off)
  • Wait for automatic reconnection after the grid returns to normal
  • If it persists or started after electrical work, call us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
38Fault
Master HW Bus Voltage High

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
39Fault
Master HW PV Current High

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
40Fault
Master Self-Test Failed

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
41Fault
HW Inv Current High

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
42Fault
Master AC SPD Error

A surge protection device (SPD) inside or connected to the inverter is reporting a fault, often after a lightning storm or grid surge.

What you can do

  • Don't open the inverter
  • Call us. SPDs must be replaced by a licensed electrician

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
43Fault
Master DC SPD Error

A surge protection device (SPD) inside or connected to the inverter is reporting a fault, often after a lightning storm or grid surge.

What you can do

  • Don't open the inverter
  • Call us. SPDs must be replaced by a licensed electrician

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
44Critical
Master Grid NE Voltage Error

The inverter detected a problem with the earth (protective earth/PE) or with the neutral-to-earth connection. A sound earth is essential for electrical safety.

What you can do

  • Do not touch the inverter, frames or cabling
  • Leave the system off if it has shut down. Call a licensed electrician or us to test the earthing

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
45Warning
Master Fan1 Error

A cooling fan isn't working properly, which can make the unit run hot and reduce output.

What you can do

  • From outside, check that nothing is blocking the vents
  • Don't open the unit
  • Call us to arrange a fan check or replacement

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
46Warning
Master Fan2 Error

A cooling fan isn't working properly, which can make the unit run hot and reduce output.

What you can do

  • From outside, check that nothing is blocking the vents
  • Don't open the unit
  • Call us to arrange a fan check or replacement

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
47Warning
Master Fan3 Error

A cooling fan isn't working properly, which can make the unit run hot and reduce output.

What you can do

  • From outside, check that nothing is blocking the vents
  • Don't open the unit
  • Call us to arrange a fan check or replacement

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
48Warning
Master Fan4 Error

A cooling fan isn't working properly, which can make the unit run hot and reduce output.

What you can do

  • From outside, check that nothing is blocking the vents
  • Don't open the unit
  • Call us to arrange a fan check or replacement

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
49Warning
Lost Communication between Master and Meter

The inverter isn't getting correct readings from its energy meter or current sensor (CT). This affects export limiting, battery charging and monitoring accuracy.

What you can do

  • Check the app. Generation may still be running normally
  • Don't open the switchboard
  • Call us to check the meter/CT wiring. If your system has an export limit, this needs fixing promptly

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
50Fault
Lost Communication between M<->S

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
51Warning
Lost Communication between inverter and Grid Meter

The inverter isn't getting correct readings from its energy meter or current sensor (CT). This affects export limiting, battery charging and monitoring accuracy.

What you can do

  • Check the app. Generation may still be running normally
  • Don't open the switchboard
  • Call us to check the meter/CT wiring. If your system has an export limit, this needs fixing promptly

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
52Info
HMI EEPROM Error

A monitoring or communication accessory (Wi-Fi/4G/data logger, display or clock) is reporting a problem. This usually doesn't stop the system generating.

What you can do

  • Restart your home router and check it reaches the inverter location
  • If you changed router or Wi-Fi password, the dongle needs reconfiguring (see the manufacturer's app guide or ask us)
  • If generation looks normal but the alarm persists, call us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
53Info
HMI RTC Error

A monitoring or communication accessory (Wi-Fi/4G/data logger, display or clock) is reporting a problem. This usually doesn't stop the system generating.

What you can do

  • Restart your home router and check it reaches the inverter location
  • If you changed router or Wi-Fi password, the dongle needs reconfiguring (see the manufacturer's app guide or ask us)
  • If generation looks normal but the alarm persists, call us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
54Fault
BMS Device Error

The battery management system has reported a problem with battery voltage, current, cells or internal hardware and has limited or stopped battery operation.

What you can do

  • Do not open the battery or touch its terminals
  • Note the exact alarm text and time from the app
  • Call us. Battery faults should be handled by the installer or manufacturer

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
55Fault
BMS Lost.Conn

The inverter and battery (or parts inside the battery) have stopped talking to each other, so the battery may stop charging or discharging.

What you can do

  • Check the battery's indicator lights and your monitoring app for other alarms
  • Don't unplug or re-plug cables yourself
  • Call us if it does not clear within a few hours

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
56Warning
CT Device Err

The inverter isn't getting correct readings from its energy meter or current sensor (CT). This affects export limiting, battery charging and monitoring accuracy.

What you can do

  • Check the app. Generation may still be running normally
  • Don't open the switchboard
  • Call us to check the meter/CT wiring. If your system has an export limit, this needs fixing promptly

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
57Fault
AFCI Lost Com.Err

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
59Warning
Lost communication between inverter and PV Meter

The inverter isn't getting correct readings from its energy meter or current sensor (CT). This affects export limiting, battery charging and monitoring accuracy.

What you can do

  • Check the app. Generation may still be running normally
  • Don't open the switchboard
  • Call us to check the meter/CT wiring. If your system has an export limit, this needs fixing promptly

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
61Warning
Slave Phase1 Voltage High

The mains voltage the inverter measured was outside the limits allowed for your network, so it disconnected or reduced output to protect the grid. This is usually a grid condition, not a faulty inverter. ("Slave" refers to the inverter's secondary/redundant monitoring processor.)

What you can do

  • Wait. The inverter reconnects by itself once voltage is back within limits
  • Note the time of day it happens. If it happens most sunny days, tell us, because it may need a voltage check or a report to your network operator
  • Don't try to change grid protection settings yourself. In Australia they are set to AS/NZS 4777.2 and your network operator's requirements

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
62Warning
Slave Phase1 Voltage Low

The mains voltage the inverter measured was outside the limits allowed for your network, so it disconnected or reduced output to protect the grid. This is usually a grid condition, not a faulty inverter. ("Slave" refers to the inverter's secondary/redundant monitoring processor.)

What you can do

  • Wait. The inverter reconnects by itself once voltage is back within limits
  • Note the time of day it happens. If it happens most sunny days, tell us, because it may need a voltage check or a report to your network operator
  • Don't try to change grid protection settings yourself. In Australia they are set to AS/NZS 4777.2 and your network operator's requirements

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
63Warning
Slave Phase2 Voltage High

The mains voltage the inverter measured was outside the limits allowed for your network, so it disconnected or reduced output to protect the grid. This is usually a grid condition, not a faulty inverter. (Phase 2/3 codes apply to three-phase models.) ("Slave" refers to the inverter's secondary/redundant monitoring processor.)

What you can do

  • Wait. The inverter reconnects by itself once voltage is back within limits
  • Note the time of day it happens. If it happens most sunny days, tell us, because it may need a voltage check or a report to your network operator
  • Don't try to change grid protection settings yourself. In Australia they are set to AS/NZS 4777.2 and your network operator's requirements

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
64Warning
Slave Phase2 Voltage Low

The mains voltage the inverter measured was outside the limits allowed for your network, so it disconnected or reduced output to protect the grid. This is usually a grid condition, not a faulty inverter. (Phase 2/3 codes apply to three-phase models.) ("Slave" refers to the inverter's secondary/redundant monitoring processor.)

What you can do

  • Wait. The inverter reconnects by itself once voltage is back within limits
  • Note the time of day it happens. If it happens most sunny days, tell us, because it may need a voltage check or a report to your network operator
  • Don't try to change grid protection settings yourself. In Australia they are set to AS/NZS 4777.2 and your network operator's requirements

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
65Warning
Slave Phase3 Voltage High

The mains voltage the inverter measured was outside the limits allowed for your network, so it disconnected or reduced output to protect the grid. This is usually a grid condition, not a faulty inverter. (Phase 2/3 codes apply to three-phase models.) ("Slave" refers to the inverter's secondary/redundant monitoring processor.)

What you can do

  • Wait. The inverter reconnects by itself once voltage is back within limits
  • Note the time of day it happens. If it happens most sunny days, tell us, because it may need a voltage check or a report to your network operator
  • Don't try to change grid protection settings yourself. In Australia they are set to AS/NZS 4777.2 and your network operator's requirements

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
66Warning
Slave Phase3 Voltage Low

The mains voltage the inverter measured was outside the limits allowed for your network, so it disconnected or reduced output to protect the grid. This is usually a grid condition, not a faulty inverter. (Phase 2/3 codes apply to three-phase models.) ("Slave" refers to the inverter's secondary/redundant monitoring processor.)

What you can do

  • Wait. The inverter reconnects by itself once voltage is back within limits
  • Note the time of day it happens. If it happens most sunny days, tell us, because it may need a voltage check or a report to your network operator
  • Don't try to change grid protection settings yourself. In Australia they are set to AS/NZS 4777.2 and your network operator's requirements

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
67Warning
Slave Frequency High

Grid frequency moved outside the allowed range, so the inverter disconnected or reduced output as the standards require. ("Slave" refers to the inverter's secondary/redundant monitoring processor.)

What you can do

  • Wait for automatic reconnection
  • If it happens often, record the times and contact us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
68Warning
Slave Frequency Low

Grid frequency moved outside the allowed range, so the inverter disconnected or reduced output as the standards require. ("Slave" refers to the inverter's secondary/redundant monitoring processor.)

What you can do

  • Wait for automatic reconnection
  • If it happens often, record the times and contact us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
73Warning
Slave No Grid Error

The inverter cannot see a normal mains supply, so it has stopped exporting to the grid (and a hybrid system may switch to backup). ("Slave" refers to the inverter's secondary/redundant monitoring processor.)

What you can do

  • Check whether the rest of the house (or your neighbours) has power, and check your network operator's outage map
  • Check the switchboard for a tripped solar supply main switch or inverter breaker. Only reset it once. If it trips again, leave it off and call an electrician
  • Wait. Once normal grid power is back, the inverter normally reconnects by itself after its safety checks (often a few minutes)
  • If grid power is normal but the alarm stays, call us

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
74Fault
Slave PV Input Mode Error

There is a firmware, model or configuration mismatch between parts of the system, so it can't run normally. ("Slave" refers to the inverter's secondary/redundant monitoring processor.)

What you can do

  • Don't try to reflash firmware yourself unless the manufacturer's app tells you to and it's an owner function
  • Call us. We can arrange a firmware update or reconfiguration with the manufacturer

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
75Fault
Slave HW PV Curr High

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. ("Slave" refers to the inverter's secondary/redundant monitoring processor.)

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
76Fault
Slave PV Voltage High Error

The DC voltage coming from the solar panels is higher than the inverter is rated for. Over-voltage can damage the inverter. ("Slave" refers to the inverter's secondary/redundant monitoring processor.)

What you can do

  • Do not touch the DC isolator or cables unless the manufacturer's owner shutdown tells you to
  • Call us. The string design needs to be checked by a licensed installer

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
77Fault
Slave HW Bus Volt High

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. ("Slave" refers to the inverter's secondary/redundant monitoring processor.)

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
81Fault
Lost Communication D<->C

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
83Fault
Master Arc Device Error

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
84Fault
Master PV Mode Error

There is a firmware, model or configuration mismatch between parts of the system, so it can't run normally.

What you can do

  • Don't try to reflash firmware yourself unless the manufacturer's app tells you to and it's an owner function
  • Call us. We can arrange a firmware update or reconfiguration with the manufacturer

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
85Fault
Authority expires

The inverter reports that an authorisation/licence period has expired. SAJ gives no further detail. This code appears in the three-phase H2-T2 AU manual, not in the single-phase S2 list.

What you can do

  • Call us. We will check with SAJ

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
86Info
DRM0 Error

The DRM0 (demand response mode 0) input has been activated or its wiring/link is open. DRM0 tells the inverter to disconnect from the grid.

What you can do

  • Check with us whether a demand-response device is fitted at your site
  • Call us. The DRM connection is installer wiring

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
87Critical
Master Arc Error

The inverter's arc-fault detection has picked up a pattern that looks like electrical arcing on the DC (solar) side, which can be a fire risk. The inverter shuts down DC power flow as a precaution.

What you can do

  • Do not reset it repeatedly and do not touch DC cables or isolators
  • If you see smoke or flames or smell burning, keep clear and call 000
  • Call us or a licensed electrician to inspect the DC wiring before the system is restarted

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
88Fault
Master SW PV Current High

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician.

What you can do

  • Note the code, time and whether it clears by itself
  • If your installer showed you the owner shutdown/restart procedure from the manufacturer's manual (summarised at the top of this page), you may restart the system once. Do not open covers or touch cabling.
  • If the code returns or the system stays offline, call us. Internal faults are a warranty/technician job

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
89Fault
Battery Voltage High

The battery management system has reported a problem with battery voltage, current, cells or internal hardware and has limited or stopped battery operation.

What you can do

  • Do not open the battery or touch its terminals
  • Note the exact alarm text and time from the app
  • Call us. Battery faults should be handled by the installer or manufacturer

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
90Fault
Battery Current High

The battery management system has reported a problem with battery voltage, current, cells or internal hardware and has limited or stopped battery operation.

What you can do

  • Do not open the battery or touch its terminals
  • Note the exact alarm text and time from the app
  • Call us. Battery faults should be handled by the installer or manufacturer

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
91Fault
Battery Charge Voltage High

The battery management system has reported a problem with battery voltage, current, cells or internal hardware and has limited or stopped battery operation.

What you can do

  • Do not open the battery or touch its terminals
  • Note the exact alarm text and time from the app
  • Call us. Battery faults should be handled by the installer or manufacturer

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
92Warning
Battery OverLoad

The backup/EPS (off-grid) output is overloaded or abnormal, so the system has limited or switched off backup power.

What you can do

  • Switch off large appliances on backup circuits
  • Wait for the system to retry (some models lock out for a period after repeated overloads)
  • If it trips with only small loads on, or you suspect a short circuit, call an electrician

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
93Fault
Battery SoftConnet TimeOut

The battery management system has reported a problem with battery voltage, current, cells or internal hardware and has limited or stopped battery operation.

What you can do

  • Do not open the battery or touch its terminals
  • Note the exact alarm text and time from the app
  • Call us. Battery faults should be handled by the installer or manufacturer

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
94Warning
Output OverLoad

The backup/EPS (off-grid) output is overloaded or abnormal, so the system has limited or switched off backup power.

What you can do

  • Switch off large appliances on backup circuits
  • Wait for the system to retry (some models lock out for a period after repeated overloads)
  • If it trips with only small loads on, or you suspect a short circuit, call an electrician

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
95Fault
Battery Open Circuit Error

The inverter and battery (or parts inside the battery) have stopped talking to each other, so the battery may stop charging or discharging.

What you can do

  • Check the battery's indicator lights and your monitoring app for other alarms
  • Don't unplug or re-plug cables yourself
  • Call us if it does not clear within a few hours

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
96Info
Battery Discharge Voltage Low

The battery's state of charge or voltage is low, so the system has stopped discharging it to protect the cells.

What you can do

  • Allow it to recharge from solar (or the grid, if your settings allow)
  • Check the app for other alarms that could be stopping charging
  • If it stays low for days in good sun, call us. Batteries left flat for long periods can be damaged

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) · Guide only. All work must be done by a licensed electrician.

H2 hybrid series (H2-S2 single-phase / H2-T2 three-phase, AU) Inverter
1Fault
Master Relay Error

Master Relay Error

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
2Fault
Master EEPROM Error

Master EEPROM Error

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
3Warning
Master Temperature High Error

Master Temperature High Error

What you can do

  • Check from a safe distance that the inverter is shaded, has clear space around it and that nothing is blocking the vents
  • It usually recovers once it cools down
  • If it repeats often or you can hear a noisy/failed fan, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
4Warning
Master Temperature Low Error

Master Temperature Low Error

What you can do

  • Check from a safe distance that the inverter is shaded, has clear space around it and that nothing is blocking the vents
  • It usually recovers once it cools down
  • If it repeats often or you can hear a noisy/failed fan, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
5Warning
Lost Communication M<->S

Lost Communication M<->S

What you can do

  • Check that your home Wi-Fi/internet is working and restart your router
  • Wait an hour - monitoring often reconnects by itself
  • If the inverter screen also shows a fault, or the alarm stays for more than a day, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
6Safety-Critical
GFCI Device Error

GFCI Device Error

What you can do

  • Keep clear and do not touch the inverter or cabling
  • Note the code, date and time
  • Call a licensed electrician or Total Solar - this alarm means current may be leaking to earth

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
7Fault
DCI Device Error

DCI Device Error

What you can do

  • Restart the system once using the owner shutdown/start-up steps in your manual
  • If it comes back, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
8Fault
Current Sensor Error

Current Sensor Error

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
9Warning
Master Phase1 Voltage High

Master Phase1 Voltage High

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
10Warning
Master Phase1 Voltage Low

Master Phase1 Voltage Low

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
11Warning
Master Phase2 Voltage High

Master Phase2 Voltage High

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
12Warning
Master Phase2 Voltage Low

Master Phase2 Voltage Low

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
13Warning
Master Phase3 Voltage High

Master Phase3 Voltage High

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
14Warning
Master Phase3 Voltage Lo w

Master Phase3 Voltage Lo w

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
15Warning
Grid Voltage 10Min High

Grid Voltage 10Min High

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
16Warning
OGrid Output Voltage Low

OGrid Output Voltage Low

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
17Fault
OGrid Output Sho Circuit

OGrid Output Sho Circuit

What you can do

  • Note the code, date and time and check the monitoring app
  • Restart the system once using the owner shutdown/start-up steps in your manual if it allows
  • If it comes back, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
18Warning
Master Grid Frequency High

Master Grid Frequency High

What you can do

  • This is caused by the mains frequency moving outside the allowed range, usually briefly
  • The inverter reconnects by itself once the grid is stable
  • If it keeps happening, note the times and call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
19Warning
Master Grid Frequency Low

Master Grid Frequency Low

What you can do

  • This is caused by the mains frequency moving outside the allowed range, usually briefly
  • The inverter reconnects by itself once the grid is stable
  • If it keeps happening, note the times and call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
21Fault
Phase1 DCV High

Phase1 DCV High

What you can do

  • Restart the system once using the owner shutdown/start-up steps in your manual
  • If it comes back, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
22Fault
Phase2 DCV High

Phase2 DCV High

What you can do

  • Restart the system once using the owner shutdown/start-up steps in your manual
  • If it comes back, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
23Fault
Phase3 DCV High

Phase3 DCV High

What you can do

  • Restart the system once using the owner shutdown/start-up steps in your manual
  • If it comes back, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
24Info
Master No Grid Error

Master No Grid Error

What you can do

  • Check whether the rest of your house or street has power, and check your network operator's outage map
  • Check the switchboard for a tripped solar/inverter breaker - reset it once only; if it trips again, leave it off and call an electrician
  • Once normal power is back the inverter usually reconnects on its own within a few minutes
  • If the power is normal but the alarm stays, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
27Safety-Critical
GFCI Error

GFCI Error

What you can do

  • Keep clear and do not touch the inverter or cabling
  • Note the code, date and time
  • Call a licensed electrician or Total Solar - this alarm means current may be leaking to earth

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
28Fault
Phase1 DCI Error

Phase1 DCI Error

What you can do

  • Restart the system once using the owner shutdown/start-up steps in your manual
  • If it comes back, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
29Fault
Phase2 DCI Error

Phase2 DCI Error

What you can do

  • Restart the system once using the owner shutdown/start-up steps in your manual
  • If it comes back, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
30Fault
Phase3 DCI Error

Phase3 DCI Error

What you can do

  • Restart the system once using the owner shutdown/start-up steps in your manual
  • If it comes back, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
31Safety-Critical
ISO Error

ISO Error

What you can do

  • Do not touch the panels, rooftop isolators or DC cables
  • Note the code and whether it appears in wet weather or early morning - this helps the electrician
  • If it clears by itself once things dry out, still let us know if it keeps returning
  • Call a licensed electrician or Total Solar - insulation and earth faults need testing with proper equipment

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
32Warning
Bus Voltage Balance Error

Bus Voltage Balance Error

What you can do

  • Check that your home Wi-Fi/internet is working and restart your router
  • Wait an hour - monitoring often reconnects by itself
  • If the inverter screen also shows a fault, or the alarm stays for more than a day, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
33Fault
Master Bus Voltage High

Master Bus Voltage High

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
34Fault
Master Bus Voltage Low

Master Bus Voltage Low

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
35Fault
Master Grid Phase Lost

Master Grid Phase Lost

What you can do

  • Note the code, date and time and check the monitoring app
  • Restart the system once using the owner shutdown/start-up steps in your manual if it allows
  • If it comes back, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
36Fault
Master PV Voltage High

Master PV Voltage High

What you can do

  • Do not touch the DC isolators or cables
  • Note the time - this often shows on cold, very sunny mornings
  • Call your installer - the panel strings may need to be checked against the inverter's limits

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
37Info
Master Islanding Error

Master Islanding Error

What you can do

  • Check whether the rest of your house or street has power, and check your network operator's outage map
  • Check the switchboard for a tripped solar/inverter breaker - reset it once only; if it trips again, leave it off and call an electrician
  • Once normal power is back the inverter usually reconnects on its own within a few minutes
  • If the power is normal but the alarm stays, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
38Fault
Master HW Bus Voltage High

Master HW Bus Voltage High

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
39Fault
Master HW PV Current High

Master HW PV Current High

What you can do

  • Check solar generation in the app compared with similar days
  • Do not touch the DC isolators, cables or connectors, and don't go on the roof
  • If it doesn't clear by itself, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
40Fault
Master Self-Test Failed

Master Self-Test Failed

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
41Fault
Master HW Inv Current High

Master HW Inv Current High

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
42Fault
Master AC SPD Error

Master AC SPD Error

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
43Fault
Master DC SPD Error

Master DC SPD Error

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
44Warning
Master Grid NE Voltage Error

Master Grid NE Voltage Error

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
45Warning
Master Fan1 Error

Master Fan1 Error

What you can do

  • Check from a safe distance that the inverter is shaded, has clear space around it and that nothing is blocking the vents
  • It usually recovers once it cools down
  • If it repeats often or you can hear a noisy/failed fan, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
46Warning
Master Fan2 Error

Master Fan2 Error

What you can do

  • Check from a safe distance that the inverter is shaded, has clear space around it and that nothing is blocking the vents
  • It usually recovers once it cools down
  • If it repeats often or you can hear a noisy/failed fan, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
47Warning
Master Fan3 Error

Master Fan3 Error

What you can do

  • Check from a safe distance that the inverter is shaded, has clear space around it and that nothing is blocking the vents
  • It usually recovers once it cools down
  • If it repeats often or you can hear a noisy/failed fan, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
48Warning
Master Fan4 Error

Master Fan4 Error

What you can do

  • Check from a safe distance that the inverter is shaded, has clear space around it and that nothing is blocking the vents
  • It usually recovers once it cools down
  • If it repeats often or you can hear a noisy/failed fan, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
49Warning
Lost Communication between Master and Meter

Lost Communication between Master and Meter

What you can do

  • Check the monitoring app for the alarm and whether export/consumption readings look wrong
  • Restart your home router if the meter talks over Wi-Fi or LAN
  • Call your installer - meter and CT wiring is inside the switchboard and must be checked by a licensed electrician

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
50Warning
Lost Communication between M< ->S

Lost Communication between M< ->S

What you can do

  • Check that your home Wi-Fi/internet is working and restart your router
  • Wait an hour - monitoring often reconnects by itself
  • If the inverter screen also shows a fault, or the alarm stays for more than a day, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
51Warning
Lost Communication between inveer and SEC

Lost Communication between inveer and SEC

What you can do

  • Check that your home Wi-Fi/internet is working and restart your router
  • Wait an hour - monitoring often reconnects by itself
  • If the inverter screen also shows a fault, or the alarm stays for more than a day, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
52Fault
HMI EEPROM Error

HMI EEPROM Error

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
53Fault
HMI RTC Error

HMI RTC Error

What you can do

  • Note the code, date and time and check the monitoring app
  • Restart the system once using the owner shutdown/start-up steps in your manual if it allows
  • If it comes back, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
54Fault
BMS Device Error

BMS Device Error

What you can do

  • Check the battery status and any extra alarms in the app
  • Restart the system once using the owner shutdown/start-up steps in your manual if it allows
  • If the alarm comes back, or the battery is hot, swollen, noisy or smells, keep clear and call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
55Fault
BMS Lost.Conn

BMS Lost.Conn

What you can do

  • Check the app - the battery may show as offline or with no state of charge
  • Restart the system once using the shutdown and start-up steps in your owner's manual (battery last off, first on, unless your manual says otherwise)
  • If the alarm comes back, call your installer - battery communication cables must be checked by them

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
56Warning
CT Device Err

CT Device Err

What you can do

  • Check the monitoring app for the alarm and whether export/consumption readings look wrong
  • Restart your home router if the meter talks over Wi-Fi or LAN
  • Call your installer - meter and CT wiring is inside the switchboard and must be checked by a licensed electrician

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
57Safety-Critical
AFCI Lost Err

AFCI Lost Err

What you can do

  • Keep clear of the inverter, panels and DC cables, and do not touch any isolators
  • Note the code, date and time, and check whether the alarm is still showing in the app
  • If you smell burning or see smoke, get everyone out and call 000
  • Call a licensed electrician or Total Solar - an arc fault means a DC wiring or connector problem that must be inspected

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
58Warning
Lost Com. H<->S Err

Lost Com. H<->S Err

What you can do

  • Check that your home Wi-Fi/internet is working and restart your router
  • Wait an hour - monitoring often reconnects by itself
  • If the inverter screen also shows a fault, or the alarm stays for more than a day, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
61Warning
Slave Phase1 Voltage High

Slave Phase1 Voltage High

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
62Warning
Slave Phase1 Voltage Low

Slave Phase1 Voltage Low

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
63Warning
Slave Phase2 Voltage High

Slave Phase2 Voltage High

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
64Warning
Slave Phase2 Voltage Low

Slave Phase2 Voltage Low

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
65Warning
Slave Phase3 Voltage High

Slave Phase3 Voltage High

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
66Warning
Slave Phase3 Voltage Low

Slave Phase3 Voltage Low

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
67Warning
Slave Frequency High

Slave Frequency High

What you can do

  • This is caused by the mains frequency moving outside the allowed range, usually briefly
  • The inverter reconnects by itself once the grid is stable
  • If it keeps happening, note the times and call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
68Warning
Slave Frequency Low

Slave Frequency Low

What you can do

  • This is caused by the mains frequency moving outside the allowed range, usually briefly
  • The inverter reconnects by itself once the grid is stable
  • If it keeps happening, note the times and call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
73Info
Slave No Grid Error

Slave No Grid Error

What you can do

  • Check whether the rest of your house or street has power, and check your network operator's outage map
  • Check the switchboard for a tripped solar/inverter breaker - reset it once only; if it trips again, leave it off and call an electrician
  • Once normal power is back the inverter usually reconnects on its own within a few minutes
  • If the power is normal but the alarm stays, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
74Fault
PVInputModeFault

PVInputModeFault

What you can do

  • Note the code, date and time and check the monitoring app
  • Restart the system once using the owner shutdown/start-up steps in your manual if it allows
  • If it comes back, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
75Fault
HWPVCurrHighFault

HWPVCurrHighFault

What you can do

  • Note the code, date and time and check the monitoring app
  • Restart the system once using the owner shutdown/start-up steps in your manual if it allows
  • If it comes back, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
76Fault
Slave PV Voltage High

Slave PV Voltage High

What you can do

  • Do not touch the DC isolators or cables
  • Note the time - this often shows on cold, very sunny mornings
  • Call your installer - the panel strings may need to be checked against the inverter's limits

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
77Fault
Slave HW Bus Volt High

Slave HW Bus Volt High

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
81Warning
Lost Communication D< ->C

Lost Communication D< ->C

What you can do

  • Check that your home Wi-Fi/internet is working and restart your router
  • Wait an hour - monitoring often reconnects by itself
  • If the inverter screen also shows a fault, or the alarm stays for more than a day, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
83Safety-Critical
Master Arc Device Error

Master Arc Device Error

What you can do

  • Keep clear of the inverter, panels and DC cables, and do not touch any isolators
  • Note the code, date and time, and check whether the alarm is still showing in the app
  • If you smell burning or see smoke, get everyone out and call 000
  • Call a licensed electrician or Total Solar - an arc fault means a DC wiring or connector problem that must be inspected

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
84Fault
Master PV Mode Error

Master PV Mode Error

What you can do

  • Check solar generation in the app compared with similar days
  • Do not touch the DC isolators, cables or connectors, and don't go on the roof
  • If it doesn't clear by itself, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
85Fault
Authority expires

Authority expires

What you can do

  • Note the code, date and time and check the monitoring app
  • Restart the system once using the owner shutdown/start-up steps in your manual if it allows
  • If it comes back, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
86Fault
DRM0 Error

DRM0 Error

What you can do

  • Note the code, date and time and check the monitoring app
  • Restart the system once using the owner shutdown/start-up steps in your manual if it allows
  • If it comes back, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
87Safety-Critical
Master Arc Error

Master Arc Error

What you can do

  • Keep clear of the inverter, panels and DC cables, and do not touch any isolators
  • Note the code, date and time, and check whether the alarm is still showing in the app
  • If you smell burning or see smoke, get everyone out and call 000
  • Call a licensed electrician or Total Solar - an arc fault means a DC wiring or connector problem that must be inspected

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
88Fault
Master SW PV Current High

Master SW PV Current High

What you can do

  • Check solar generation in the app compared with similar days
  • Do not touch the DC isolators, cables or connectors, and don't go on the roof
  • If it doesn't clear by itself, call your installer

R6 3-15K-T2 three-phase string · Guide only. All work must be done by a licensed electrician.

R6 3-15K-T2 three-phase string Inverter
E001Fault
Master Relay Error

Master Relay Error

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E002Fault
Master EEPROM Error

Master EEPROM Error

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E003Warning
Master Temperature High Error

Master Temperature High Error

What you can do

  • Check from a safe distance that the inverter is shaded, has clear space around it and that nothing is blocking the vents
  • It usually recovers once it cools down
  • If it repeats often or you can hear a noisy/failed fan, call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E004Warning
Master Temperature Low Error

Master Temperature Low Error

What you can do

  • Check from a safe distance that the inverter is shaded, has clear space around it and that nothing is blocking the vents
  • It usually recovers once it cools down
  • If it repeats often or you can hear a noisy/failed fan, call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E005Warning
Lost Communication M<->S

Lost Communication M<->S

What you can do

  • Check that your home Wi-Fi/internet is working and restart your router
  • Wait an hour - monitoring often reconnects by itself
  • If the inverter screen also shows a fault, or the alarm stays for more than a day, call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E006Safety-Critical
GFCI Device Error

GFCI Device Error

What you can do

  • Keep clear and do not touch the inverter or cabling
  • Note the code, date and time
  • Call a licensed electrician or Total Solar - this alarm means current may be leaking to earth

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E007Fault
DCI Device Error

DCI Device Error

What you can do

  • Restart the system once using the owner shutdown/start-up steps in your manual
  • If it comes back, call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E009Warning
Master Phase1 Voltage High

Master Phase1 Voltage High

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E010Warning
Master Phase1 Voltage Low

Master Phase1 Voltage Low

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E015Warning
Grid Voltage 10Min High

Grid Voltage 10Min High

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E018Warning
Master Grid Frequency High

Master Grid Frequency High

What you can do

  • This is caused by the mains frequency moving outside the allowed range, usually briefly
  • The inverter reconnects by itself once the grid is stable
  • If it keeps happening, note the times and call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E019Warning
Master Grid Frequency Low

Master Grid Frequency Low

What you can do

  • This is caused by the mains frequency moving outside the allowed range, usually briefly
  • The inverter reconnects by itself once the grid is stable
  • If it keeps happening, note the times and call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E024Info
Master No Grid Error

Master No Grid Error

What you can do

  • Check whether the rest of your house or street has power, and check your network operator's outage map
  • Check the switchboard for a tripped solar/inverter breaker - reset it once only; if it trips again, leave it off and call an electrician
  • Once normal power is back the inverter usually reconnects on its own within a few minutes
  • If the power is normal but the alarm stays, call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E027Safety-Critical
GFCI Error

GFCI Error

What you can do

  • Keep clear and do not touch the inverter or cabling
  • Note the code, date and time
  • Call a licensed electrician or Total Solar - this alarm means current may be leaking to earth

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E028Fault
Phase1 DCI Error

Phase1 DCI Error

What you can do

  • Restart the system once using the owner shutdown/start-up steps in your manual
  • If it comes back, call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E031Safety-Critical
ISO Error

ISO Error

What you can do

  • Do not touch the panels, rooftop isolators or DC cables
  • Note the code and whether it appears in wet weather or early morning - this helps the electrician
  • If it clears by itself once things dry out, still let us know if it keeps returning
  • Call a licensed electrician or Total Solar - insulation and earth faults need testing with proper equipment

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E033Fault
Master Bus Voltage High

Master Bus Voltage High

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E034Fault
Master Bus Voltage Low

Master Bus Voltage Low

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E036Fault
Master PV Voltage High Error

Master PV Voltage High Error

What you can do

  • Do not touch the DC isolators or cables
  • Note the time - this often shows on cold, very sunny mornings
  • Call your installer - the panel strings may need to be checked against the inverter's limits

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E038Fault
Master HW Bus Voltage High

Master HW Bus Voltage High

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E039Fault
Master HW PV Current High

Master HW PV Current High

What you can do

  • Check solar generation in the app compared with similar days
  • Do not touch the DC isolators, cables or connectors, and don't go on the roof
  • If it doesn't clear by itself, call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E041Fault
Master HW Inv Current High

Master HW Inv Current High

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E044Warning
Master Grid NE Voltage Error

Master Grid NE Voltage Error

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E045Warning
Master Fan1 Error

Master Fan1 Error

What you can do

  • Check from a safe distance that the inverter is shaded, has clear space around it and that nothing is blocking the vents
  • It usually recovers once it cools down
  • If it repeats often or you can hear a noisy/failed fan, call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E049Warning
Lost Communication between Master and Meter

Lost Communication between Master and Meter

What you can do

  • Check the monitoring app for the alarm and whether export/consumption readings look wrong
  • Restart your home router if the meter talks over Wi-Fi or LAN
  • Call your installer - meter and CT wiring is inside the switchboard and must be checked by a licensed electrician

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E050Warning
Lost Communication between M<->S

Lost Communication between M<->S

What you can do

  • Check that your home Wi-Fi/internet is working and restart your router
  • Wait an hour - monitoring often reconnects by itself
  • If the inverter screen also shows a fault, or the alarm stays for more than a day, call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E051Warning
Lost Communication between inverter and Grid Meter

Lost Communication between inverter and Grid Meter

What you can do

  • Check the monitoring app for the alarm and whether export/consumption readings look wrong
  • Restart your home router if the meter talks over Wi-Fi or LAN
  • Call your installer - meter and CT wiring is inside the switchboard and must be checked by a licensed electrician

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E052Fault
HMI EEPROM Error

HMI EEPROM Error

What you can do

  • Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
  • If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E053Fault
HMI RTC Error

HMI RTC Error

What you can do

  • Note the code, date and time and check the monitoring app
  • Restart the system once using the owner shutdown/start-up steps in your manual if it allows
  • If it comes back, call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E061Warning
Slave Phase1 Voltage High

Slave Phase1 Voltage High

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E062Warning
Slave Phase1 Voltage Low

Slave Phase1 Voltage Low

What you can do

  • This is usually caused by the mains supply, not the solar system
  • The inverter normally reconnects by itself once grid voltage is back in range
  • If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E067Warning
Slave Frequency High

Slave Frequency High

What you can do

  • This is caused by the mains frequency moving outside the allowed range, usually briefly
  • The inverter reconnects by itself once the grid is stable
  • If it keeps happening, note the times and call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E068Warning
Slave Frequency Low

Slave Frequency Low

What you can do

  • This is caused by the mains frequency moving outside the allowed range, usually briefly
  • The inverter reconnects by itself once the grid is stable
  • If it keeps happening, note the times and call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E073Info
Slave No Grid Error

Slave No Grid Error

What you can do

  • Check whether the rest of your house or street has power, and check your network operator's outage map
  • Check the switchboard for a tripped solar/inverter breaker - reset it once only; if it trips again, leave it off and call an electrician
  • Once normal power is back the inverter usually reconnects on its own within a few minutes
  • If the power is normal but the alarm stays, call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E081Warning
Lost Communication D<->C

Lost Communication D<->C

What you can do

  • Check that your home Wi-Fi/internet is working and restart your router
  • Wait an hour - monitoring often reconnects by itself
  • If the inverter screen also shows a fault, or the alarm stays for more than a day, call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E083Safety-Critical
Master Arc Device Error

Master Arc Device Error

What you can do

  • Keep clear of the inverter, panels and DC cables, and do not touch any isolators
  • Note the code, date and time, and check whether the alarm is still showing in the app
  • If you smell burning or see smoke, get everyone out and call 000
  • Call a licensed electrician or Total Solar - an arc fault means a DC wiring or connector problem that must be inspected

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E084Fault
Master PV Mode Error

Master PV Mode Error

What you can do

  • Check solar generation in the app compared with similar days
  • Do not touch the DC isolators, cables or connectors, and don't go on the roof
  • If it doesn't clear by itself, call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E086Fault
DRM0 Error

DRM0 Error

What you can do

  • Note the code, date and time and check the monitoring app
  • Restart the system once using the owner shutdown/start-up steps in your manual if it allows
  • If it comes back, call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E087Safety-Critical
Master Arc Error

Master Arc Error

What you can do

  • Keep clear of the inverter, panels and DC cables, and do not touch any isolators
  • Note the code, date and time, and check whether the alarm is still showing in the app
  • If you smell burning or see smoke, get everyone out and call 000
  • Call a licensed electrician or Total Solar - an arc fault means a DC wiring or connector problem that must be inspected

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
E088Fault
Master SW PV Current High

Master SW PV Current High

What you can do

  • Check solar generation in the app compared with similar days
  • Do not touch the DC isolators, cables or connectors, and don't go on the roof
  • If it doesn't clear by itself, call your installer

R6 5-10K-S2/S3 single-phase string (AU) · Guide only. All work must be done by a licensed electrician.

R6 5-10K-S2/S3 single-phase string (AU) Inverter
97Fault
BMS internal communication error

unit and battery module 1 2. Did not install RJ45 plug, therefore battery p control unit counted the number of battery 2

What you can do

  • Check the app - the battery may show as offline or with no state of charge
  • Restart the system once using the shutdown and start-up steps in your owner's manual (battery last off, first on, unless your manual says otherwise)
  • If the alarm comes back, call your installer - battery communication cables must be checked by them

B2-5.0-HV battery (AU) · Guide only. All work must be done by a licensed electrician.

B2-5.0-HV battery (AU) Battery
98Fault
Battery module sequence error

1. Cable connection is wrong 1 2. Did not install RJ45 plug 2

What you can do

  • Check the battery status and any extra alarms in the app
  • Restart the system once using the owner shutdown/start-up steps in your manual if it allows
  • If the alarm comes back, or the battery is hot, swollen, noisy or smells, keep clear and call your installer

B2-5.0-HV battery (AU) · Guide only. All work must be done by a licensed electrician.

B2-5.0-HV battery (AU) Battery
99Warning
Discharge overcurrent protection

3. Communication cable connection is wrong 3 Discharging current exceeds the set limit W

What you can do

  • Check that your home Wi-Fi/internet is working and restart your router
  • Wait an hour - monitoring often reconnects by itself
  • If the inverter screen also shows a fault, or the alarm stays for more than a day, call your installer

B2-5.0-HV battery (AU) · Guide only. All work must be done by a licensed electrician.

B2-5.0-HV battery (AU) Battery
100Fault
Charge overcurrent protection Total voltage low

Charging current exceeds the set limit W

What you can do

  • Note the code and the battery state of charge shown in the app
  • Let the system run - some battery voltage protections clear by themselves after charging or discharging
  • If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself

B2-5.0-HV battery (AU) · Guide only. All work must be done by a licensed electrician.

B2-5.0-HV battery (AU) Battery
101Fault
protection Total voltage low protection

Total voltage is lower than the set limit F

What you can do

  • Note the code and the battery state of charge shown in the app
  • Let the system run - some battery voltage protections clear by themselves after charging or discharging
  • If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself

B2-5.0-HV battery (AU) · Guide only. All work must be done by a licensed electrician.

B2-5.0-HV battery (AU) Battery
102Fault
Total voltage high protection

Total voltage is higher than the set limit W

What you can do

  • Note the code and the battery state of charge shown in the app
  • Let the system run - some battery voltage protections clear by themselves after charging or discharging
  • If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself

B2-5.0-HV battery (AU) · Guide only. All work must be done by a licensed electrician.

B2-5.0-HV battery (AU) Battery
103Fault
Single battery module voltage low protection Single battery module

Single battery module voltage is lower than the F set limit Single battery module voltage is higher than the

What you can do

  • Note the code and the battery state of charge shown in the app
  • Let the system run - some battery voltage protections clear by themselves after charging or discharging
  • If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself

B2-5.0-HV battery (AU) · Guide only. All work must be done by a licensed electrician.

B2-5.0-HV battery (AU) Battery
104Fault
voltage low protection Single battery module voltage high protection

set limit Single battery module voltage is higher than the W set limit 1

What you can do

  • Note the code and the battery state of charge shown in the app
  • Let the system run - some battery voltage protections clear by themselves after charging or discharging
  • If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself

B2-5.0-HV battery (AU) · Guide only. All work must be done by a licensed electrician.

B2-5.0-HV battery (AU) Battery
106Safety-Critical
Charging temperature low protection

W Battery charging at <0℃ e

What you can do

  • Check from a safe distance for heat, swelling, hissing, a burning smell or smoke - if you notice any, keep everyone away and call 000
  • If nothing looks wrong, make sure the battery area is shaded and ventilated and nothing is stacked against it
  • Let the battery cool; most units recover by themselves
  • If the alarm keeps returning, call your installer

B2-5.0-HV battery (AU) · Guide only. All work must be done by a licensed electrician.

B2-5.0-HV battery (AU) Battery
107Safety-Critical
Charging temperature high protection

W Battery temperature too high e

What you can do

  • Check from a safe distance for heat, swelling, hissing, a burning smell or smoke - if you notice any, keep everyone away and call 000
  • If nothing looks wrong, make sure the battery area is shaded and ventilated and nothing is stacked against it
  • Let the battery cool; most units recover by themselves
  • If the alarm keeps returning, call your installer

B2-5.0-HV battery (AU) · Guide only. All work must be done by a licensed electrician.

B2-5.0-HV battery (AU) Battery

Common SAJ questions

What does SAJ 1 "Master Relay Error" mean?

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. Note the code, time and whether it clears by itself This is a guide only; any electrical work must be done by a licensed electrician.

What does SAJ 2 "Master EEPROM Error" mean?

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. Note the code, time and whether it clears by itself This is a guide only; any electrical work must be done by a licensed electrician.

What does SAJ 5 "Lost Communication M<->S" mean?

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. Note the code, time and whether it clears by itself This is a guide only; any electrical work must be done by a licensed electrician.

What does SAJ 6 "GFCI Device Error" mean?

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. Note the code, time and whether it clears by itself This is a guide only; any electrical work must be done by a licensed electrician.

What does SAJ 7 "DCI Device Error" mean?

The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. Note the code, time and whether it clears by itself This is a guide only; any electrical work must be done by a licensed electrician.

Need help with this fault?

Get a licensed electrician to call you back.

Total Solar can help: our licensed electricians install and service systems. Based in Ellenbrook, WA, with Victoria and Queensland also available.

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Sources

Meanings are summarised from these manufacturer documents. Check your own model's manual, as codes vary between models and firmware versions.

SAJ is a trademark of its owner. Total Solar is not affiliated with the manufacturer unless stated. All fault code guides

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