SAJ R6 5-10K-S2/S3 single-phase string (AU) error codes explained

What 40 SAJ R6 5-10K-S2/S3 single-phase string (AU) inverter & battery fault and error codes mean, in plain English, with safe checks you can do and when to call a licensed electrician.

Safety first: never open the switchboard, remove covers, or pull apart or disconnect the inverter, batteries, isolators or wiring. Only use the switches and buttons described here. Anything else must be done by a licensed electrician. Call 1300 209 503 or book a service request.

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.

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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 R6-(5K-10K)-(S2,S3) User Manual V0.3 (AU), ch. 7

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

Code	Message & meaning	Model	Type
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

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