LG error codes explained
What 7 LG 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.
| Code | Message & meaning |
|---|---|
| DiagResultFault2 0x0001Fault |
Over Voltage Fault2Over Voltage Fault2 What you can do
RESU10H Prime battery · Guide only. All work must be done by a licensed electrician. |
| DiagResultFault2 0x0002Fault |
Under Voltage Fault2Under Voltage Fault2 What you can do
RESU10H Prime battery · Guide only. All work must be done by a licensed electrician. |
| DiagResultFault2 0x0400Warning |
Over Temperature Fault2Over Temperature Fault2 What you can do
RESU10H Prime battery · Guide only. All work must be done by a licensed electrician. |
| DiagResultFault2 0x0800Warning |
Under Temperature Fault2Under Temperature Fault2 What you can do
RESU10H Prime battery · Guide only. All work must be done by a licensed electrician. |
| DiagResultFault2 0x0020Fault |
Over Charge Current Fault2Over Charge Current Fault2 What you can do
RESU10H Prime battery · Guide only. All work must be done by a licensed electrician. |
| DiagResultFault2 0x2000Warning |
Failed (MCU-BMIC Comm.Failed (MCU-BMIC Comm. What you can do
RESU10H Prime battery · Guide only. All work must be done by a licensed electrician. |
| DiagResultFault2 0x0008Warning |
Pack Under Voltage Fault2Pack Under Voltage Fault2 What you can do
RESU10H Prime battery · Guide only. All work must be done by a licensed electrician. |
No codes match. Try fewer characters, or ask us.
Common LG questions
What does LG DiagResultFault2 0x0001 "Over Voltage Fault2" mean?
Over Voltage Fault2 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 LG DiagResultFault2 0x0002 "Under Voltage Fault2" mean?
Under Voltage Fault2 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 LG DiagResultFault2 0x0020 "Over Charge Current Fault2" mean?
Over Charge Current Fault2 Turn off any very large loads that were running when the alarm appeared This is a guide only; any electrical work must be done by a licensed electrician.
What does LG DiagResultFault2 0x0400 "Over Temperature Fault2" mean?
Over Temperature Fault2 Check from a safe distance that the inverter is shaded, has clear space around it and that nothing is blocking the vents This is a guide only; any electrical work must be done by a licensed electrician.
What does LG DiagResultFault2 0x0800 "Under Temperature Fault2" mean?
Under Temperature Fault2 Check from a safe distance that the inverter is shaded, has clear space around it and that nothing is blocking the vents 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
Sources
Meanings are summarised from these manufacturer documents. Check your own model's manual, as codes vary between models and firmware versions.
LG is a trademark of its owner. Total Solar is not affiliated with the manufacturer unless stated. All fault code guides