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Error codes by brand

LG Energy Solution error codes

LG Energy Solution has left the Australian market. These codes are here for existing systems only.

15 codes documented in LG Energy Solution's inverter and battery manuals. Pick yours to see what it means, what you can safely check, and when to call your installer.

WattMate is not affiliated with LG Energy Solution. This page summarises LG Energy Solution's own published documentation; your installer and LG Energy Solution are the authority on your system. WattMate doesn't repair systems or make site visits.

Battery codes

  • DiagResultFault2 0x0001Over Voltage Fault2
  • DiagResultFault2 0x0002Under Voltage Fault2
  • DiagResultFault2 0x0004Urgent Under Voltage Fault2
  • DiagResultFault2 0x0008Pack Under Voltage Fault2
  • DiagResultFault2 0x0020Over Charge Current Fault2
  • DiagResultFault2 0x0040Over Discharge Current Fault2
  • DiagResultFault2 0x0080Over Charge Power Limit Fault2
  • DiagResultFault2 0x0100Over Discharge Power Limit Fault2
  • DiagResultFault2 0x0400Over Temperature Fault2
  • DiagResultFault2 0x0800Under Temperature Fault2
  • DiagResultFault2 0x2000Internal Communication Failed
  • DiagResultFault2 0x4000External Communication Failed
  • DiagResultFault2 0x80000Sudden Voltage Drop Fault2
  • DiagResultFault2 0x4000000Cell Deviation Voltage Fault2
  • DiagResultHwFault2 0x0004BMS Internal Fault2

Find the LG Energy Solution manual for your model

When to call your installer or the warranty line

Your installer is your first warranty contact. If they've gone, the manufacturer's warranty line still covers the hardware. Don't open the inverter or battery case yourself: work inside it is for a licensed electrician.

If you see smoke, scorch marks or smell burning, switch the system off at the AC and PV isolators and call your installer. If anyone is in danger, call 000.

We don't have a warranty line on file for LG Energy Solution yet. See the manufacturer contacts we do hold, or ask your installer.

  1. Try the free fixes first

    Most faults are an isolator, a WiFi drop or a known error code. Start with the lookup and guides above.

  2. Then call the people who are responsible for it

    Your installer is your first warranty contact. If they've gone, the manufacturer's warranty line still covers the hardware.

    Find the manufacturer's warranty line
  3. If it's near the end of its life, see what replacing it would do

    A free energy audit report sizes a new system for your actual bills and shows what a replacement would do. Your first results need no details; your details only reach installers if you ask for the full report.

    Get your free energy audit report