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SolaX error codes explained

What 103 SolaX inverter 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: SolaX X1-Hybrid G4 single-phase hybrid

CodeMessage & meaningModelType
IE 01Fault
TZ Protect Fault

Overcurrent fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 02Info
Grid Lost Fault

Grid lost fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 03Warning
Grid Volt Fault

Power grid voltage overrun

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 04Warning
Grid Freq Fault

Grid overfrequency

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 05Fault
PV Volt Fault

PV overvoltage

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 06Fault
Bus Volt Fault

Press the ESC key to restart the inverter.

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 07Fault
Bat Volt Fault

Battery voltage fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 08Warning
AC10mins Volt

Grid voltage out of range in the last 10 minutes

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 09Fault
DCI OCP Fault

DCI overcurrent protection fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 10Warning
DCV OVP Fault

DCV EPS (Off-grid) overvoltage protection fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 11Warning
SW OCP Fault

Software detection of overcurrent fault

What you can do

  • Make sure the system is online so it can receive updates
  • Restart the system once using the owner steps in your manual
  • If the alarm stays, call your installer - settings and firmware must be fixed by them or the manufacturer

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 12Fault
RC OCP Fault

Overcurrent protection fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 13Safety-Critical
Isolation Fault

Insulation fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 14Warning
Temp Over Fault

Temperature out of range

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 15Fault
Bat Con Dir Fault

Battery direction fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 16Warning
EPS Overload Fault

EPS (Off-grid) overload fault

What you can do

  • Turn off some large appliances (air-conditioners, ovens, kettles, pool pumps) - backup outputs have a power limit
  • The system usually recovers by itself once the load drops
  • If it keeps happening with normal loads, call your installer

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 17Warning
Overload Fault

On-grid mode overload fault

What you can do

  • Turn off some large appliances (air-conditioners, ovens, kettles, pool pumps) - backup outputs have a power limit
  • The system usually recovers by itself once the load drops
  • If it keeps happening with normal loads, call your installer

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 18Info
BatPowerLow

Bat power low

What you can do

  • This normally means the battery is low or has reached its reserve level
  • Let the system recharge from solar or the grid - check the state of charge in the app
  • If the battery never charges or stays at 0% for more than a day of sunshine, call your installer

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 19Fault
BMS Lost

Battery communication lost

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 20Warning
Fan Fault

Fan fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 21Warning
Low TempFault

Low temperature fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 22Warning
ARM unmatched

ARM software version mismatch fault

What you can do

  • Make sure the system is online so it can receive updates
  • Restart the system once using the owner steps in your manual
  • If the alarm stays, call your installer - settings and firmware must be fixed by them or the manufacturer

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 23Fault
Other Device Fault

Other Device Fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 25Warning
InterCommsFault

Internal communication fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 26Fault
INV EEPROM

Inverter EEPROM fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 27Safety-Critical
RCD Fault

Residual current device fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 28Fault
Grid Relay Fault

Electrical relay fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 29Warning
EPS Relay Fault

EPS (Off-grid) relay fault

What you can do

  • Turn off some large appliances (air-conditioners, ovens, kettles, pool pumps) - backup outputs have a power limit
  • The system usually recovers by itself once the load drops
  • If it keeps happening with normal loads, call your installer

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 30Fault
PV ConnDirFault

PV direction fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 31Fault
ChargeRelayFault

Charge relay fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 32Safety-Critical
EarthRelayFault

EPS earth relay fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 101Fault
PowerTypeFault

Power type fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 102Warning
Port OC Warning

EPS (Off-grid) port overcurrent fault

What you can do

  • Turn off some large appliances (air-conditioners, ovens, kettles, pool pumps) - backup outputs have a power limit
  • The system usually recovers by itself once the load drops
  • If it keeps happening with normal loads, call your installer

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 103Fault
Mgr EEPROM Fault

Manager EEPROM fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 104Warning
DSPunmatched

DSP veision error

What you can do

  • Make sure the system is online so it can receive updates
  • Restart the system once using the owner steps in your manual
  • If the alarm stays, call your installer - settings and firmware must be fixed by them or the manufacturer

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 105Fault
NTC Sample Invalid

NTC invalid

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 106Safety-Critical
Bat Temp Low

Battery temperature low

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 107Safety-Critical
Bat Temp High

Battery temperature high

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 109Warning
Meter Fault

Meter fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE 110Fault
BypassRelayFlt

Bypass relay fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 01Fault
BMS_Exter_Err

BMS_Exter_Err

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 02Fault
BMS_InterErr

BMS_InterErr

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 03Fault
BMS_OverVolt

BMS_OverVolt

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 04Fault
BMS_LowerVolt

BMS_LowerVolt

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 05Fault
BMS_ChargeOCP

BMS_ChargeOCP

What you can do

  • Turn off any very large loads that were running when the alarm appeared
  • Wait - many over-current protections reset automatically
  • If it keeps happening, call your installer

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 06Fault
Battery fault-discharge over current fault

Battery fault-discharge over current fault

What you can do

  • Turn off any very large loads that were running when the alarm appeared
  • Wait - many over-current protections reset automatically
  • If it keeps happening, call your installer

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 07Safety-Critical
Over temperature in battery system

Over temperature in battery system

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 08Safety-Critical
BMS_TempSensor

Battery temperature sensor malfunction

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 09Warning
Battery Unbalanced Fault

Battery Unbalanced Fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 10Fault
BMS_Hardware

Battery hardware protection fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 11Fault
Battery circuit fault

Battery circuit fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 12Safety-Critical
Battery insulation fault

Battery insulation fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 13Fault
Battery voltage sensor fault

Battery voltage sensor fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 14Warning
Temperature sensor fault

Temperature sensor fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 15Fault
BMS_CurSensor

Battery current sensor fault

What you can do

  • Turn off any very large loads that were running when the alarm appeared
  • Wait - many over-current protections reset automatically
  • If it keeps happening, call your installer

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 16Fault
Battery relay fault

Battery relay fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 17Fault
Battery type fault

Battery type fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 18Fault
Battery version mismatch fault

Battery version mismatch fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 19Fault
Upgrade the battery BMS software.

Upgrade the battery BMS software.

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 20Fault
BMS_SW_Unmatch

Upgrade the battery BMS software.

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 21Fault
Upgrade the battery BMS software.

Upgrade the battery BMS software.

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 22Fault
Upgrade the battery BMS software.

Upgrade the battery BMS software.

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 23Fault
BMS_SW_Protect

Upgrade the battery BMS software.

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 24Fault
BMS_536_Fault

BMS_536_Fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 25Fault
BMS_SelfCheckErr

BMS_SelfCheckErr

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 26Safety-Critical
BMS_Tempdiff

BMS_Tempdiff

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 27Fault
BMS_Break_Fault

BMS_Break_Fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 28Fault
BMS_Flash_Fault

BMS_Flash_Fault

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
BE 30Fault
Check if the battery breaker is off.

Check if the battery breaker is off.

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

X1-Hybrid G4 single-phase hybrid · Guide only. All work must be done by a licensed electrician.

X1-Hybrid G4 single-phase hybrid Inverter
IE:00001Fault
TzFault

Over Current Fault.

What you can do

  • Note the code, time and whether it clears by itself
  • You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling
  • If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00002Fault
GridLostFault

Grid Lost Fault.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00003Warning
GridVoltFault

Grid Voltage Out of Range.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00004Warning
GridVoltFault

Grid Voltage Out of Range.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00005Warning
GridVoltFault

Grid Voltage Out of Range.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00006Warning
GridFreqFault

Grid Frequency Out of Range.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00007Warning
GridFreqFault

Grid Frequency Out of Range.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00008Warning
GridFreqFault

Grid Frequency Out of Range.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00009Fault
PVVoltFault

PV Voltage Fault.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00010Fault
BusVoltFault

DC Bus Voltage Out of Normal Range.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00051Fault
BusVoltFault

DC Bus Voltage Out of Normal Range.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00052Fault
BusVoltFault

DC Bus Voltage Out of Normal Range.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00012Warning
GridVolt10MFault

Grid Overvoltage for Ten Minutes Fault.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00013Fault
DcInjOCP

DCI Overcurrent Protection Fault.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00016Fault
SW OCP Fault

Software Overcurrent Protection Fault.

What you can do

  • Note the code, time and whether it clears by itself
  • You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling
  • If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00018Critical
ResidualOCP

Overcurrent Protection Fault (residual current).

What you can do

  • Keep clear and do not touch the inverter or cabling
  • Note the code, date and time
  • If you see smoke, smell burning or hear crackling, keep everyone away and call 000
  • Call a licensed electrician or Total Solar - this alarm means current may be leaking to earth

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00019Critical
ResidualOCP

Overcurrent Protection Fault (residual current).

What you can do

  • Keep clear and do not touch the inverter or cabling
  • Note the code, date and time
  • If you see smoke, smell burning or hear crackling, keep everyone away and call 000
  • Call a licensed electrician or Total Solar - this alarm means current may be leaking to earth

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00020Critical
IsoFault

Isolation Fault.

What you can do

  • Keep clear - do not touch the panels, rooftop isolators, DC cables or the inverter
  • Note the code and whether it appears in wet weather or early morning - this helps the electrician
  • If you see smoke, smell burning or hear crackling, keep everyone away and call 000
  • Call a licensed electrician or Total Solar - insulation and earth faults need testing with proper equipment

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00021Fault
OverTempFault

Over Temperature Fault.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00029Fault
LowTempFault

Low Temperature Fault.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00034Fault
HardLimitFault

Hard Limit Fault (Australian standard).

What you can do

  • Don't change installer settings yourself
  • Call your installer - country/grid settings and configuration must be set by them or the manufacturer

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00036Fault
InternalComFault

Internal Communication Fault.

What you can do

  • Note the code, time and whether it clears by itself
  • You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling
  • If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00037Fault
EepromFault

DSP EEPROM Fault.

What you can do

  • Note the code, time and whether it clears by itself
  • You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling
  • If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00038Critical
RcDeviceFault

Residual Current Device Fault.

What you can do

  • Keep clear and do not touch the inverter or cabling
  • Note the code, date and time
  • If you see smoke, smell burning or hear crackling, keep everyone away and call 000
  • Call a licensed electrician or Total Solar - this alarm means current may be leaking to earth

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00039Fault
GridRelayFault

Relay Fault.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00056Fault
GridRelayFault

Relay Fault.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00041Critical
PVConnDirFault

PV Direction Fault.

What you can do

  • Keep clear - do not touch the DC isolators, cables or connectors
  • If you see smoke, smell burning or hear crackling, keep everyone away and call 000
  • Call a licensed electrician or your installer - this points to a wiring problem

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00042Critical
PVConnDirFault

PV Direction Fault.

What you can do

  • Keep clear - do not touch the DC isolators, cables or connectors
  • If you see smoke, smell burning or hear crackling, keep everyone away and call 000
  • Call a licensed electrician or your installer - this points to a wiring problem

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00043Critical
PVConnDirFault

PV Direction Fault.

What you can do

  • Keep clear - do not touch the DC isolators, cables or connectors
  • If you see smoke, smell burning or hear crackling, keep everyone away and call 000
  • Call a licensed electrician or your installer - this points to a wiring problem

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00044Critical
PVConnDirFault

PV Direction Fault.

What you can do

  • Keep clear - do not touch the DC isolators, cables or connectors
  • If you see smoke, smell burning or hear crackling, keep everyone away and call 000
  • Call a licensed electrician or your installer - this points to a wiring problem

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
IE:00055Critical
EarthFault

Earth Fault.

What you can do

  • Keep clear - do not touch the inverter, frames or cabling
  • Leave the system off if it has shut down
  • If you see smoke, smell burning or hear crackling, keep everyone away and call 000
  • Call a licensed electrician or Total Solar to test the earthing

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
ME:00101Fault
PowerTypeFault

Power Type Fault.

What you can do

  • Make sure the system is online so it can receive updates
  • Restart the system once using the owner steps in your manual
  • If the alarm stays, call your installer - settings and firmware must be fixed by them or the manufacturer

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
ME:00103Fault
Mgr EEPROM Fault

ARM EEPROM Fault.

What you can do

  • Note the code, time and whether it clears by itself
  • You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling
  • If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter
ME:00105Fault
Meter Fault

Meter Fault.

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

X1-Boost G4 single-phase string inverter (2.5-6 kW) · Guide only. All work must be done by a licensed electrician.

X1-Boost G4 single-phase string inverter (2.5-6 kW) Inverter

Common SolaX questions

What does SolaX IE 01 "TZ Protect Fault" mean?

Overcurrent fault Note the code, date and time and check the monitoring app This is a guide only; any electrical work must be done by a licensed electrician.

What does SolaX IE 05 "PV Volt Fault" mean?

PV overvoltage Do not touch the DC isolators or cables This is a guide only; any electrical work must be done by a licensed electrician.

What does SolaX IE 06 "Bus Volt Fault" mean?

Press the ESC key to restart the inverter. Note the code, then restart the system once using the owner shutdown/start-up steps in your manual This is a guide only; any electrical work must be done by a licensed electrician.

What does SolaX IE 07 "Bat Volt Fault" mean?

Battery voltage fault Note the code and the battery state of charge shown in the app This is a guide only; any electrical work must be done by a licensed electrician.

What does SolaX IE 09 "DCI OCP Fault" mean?

DCI overcurrent protection fault Restart the system once using the owner shutdown/start-up steps in your manual 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.

Or call 1300 209 503

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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.

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

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