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Error codes by brand

Solis error codes

50 codes documented in Solis'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 Solis. This page summarises Solis's own published documentation; your installer and Solis are the authority on your system. WattMate doesn't repair systems or make site visits.

Inverter codes

  • 12Power-FAULT12V power supply fault
  • AFCI Check FAULTAFCI module self check fault
  • ARC-FAULTARC detected in DC circuit
  • ARCI-FAULTArc fault detected
  • Battery overvoltageBattery voltage is too high
  • CAN FailCommunication failure between inverter and battery
  • DC-INTFDC input overcurrent
  • DCinj-FAULTHigh DC injection current
  • DSP-B-FAULTComm. failure between main and slave DSP
  • Fan AlarmFan malfunction
  • G-IMPHigh grid impedance
  • G-PHASEUnbalanced grid voltage
  • GRID-INTF01/02Grid interference
  • IGBT-OV-IOver IGBT current
  • IGFOL-FGrid current tracking fail
  • ILeak-PRO 01/02/03/04Leakage current protection
  • INI-FAULTInitialization system fault
  • LCD show initializing all the timeCannot start-up
  • Leakage current failureLeakage current detected
  • LmtByEPMThe device's output is under controlled
  • LmtByTempOver temperature power limited
  • No powerInverter no power on LCD
  • NO-BatteryUnconnected battery
  • NO-GRIDNo grid voltage
  • OffControl device to shutdown
  • OV-BUSOver DC bus voltage
  • OV-DC01Over DC voltage - Level 1
  • OV-DC01/02/03/04Over DC voltage
  • OV-DCA-IDC input overcurrent
  • OV-G-F01/02Over grid frequency
  • OV-G-IOver grid current
  • OV-G-V01Over grid voltage - Level 1
  • OV-G-V01/02/03/04Over grid voltage
  • OV-IgTrAC side transient overcurrent
  • OV-ILLCLLC hardware overcurrent
  • OV-TEMOver Temperature
  • OV-VBackupBypass overvoltage fault
  • OV-Vbatt-HBattery overvoltage hardware fault
  • OV-Vbatt1Battery overvoltage detected
  • Over-LoadBypass overload fault
  • PV ISO-PRO01PV isolation protection fault - Level 1
  • PV ISO-PRO01/02PV isolation protection
  • PV-ISO PRO 01PV negative ground fault
  • PV-ISO PRO 02PV positive ground fault
  • RelayChk-FAILRelay check failed
  • Surge AlarmOn-site grid surge
  • UN-BUS01/02Under DC bus voltage
  • UN-G-F01/02Under grid frequency
  • UN-G-V01Under grid voltage - Level 1
  • UN-G-V01/02Under grid voltage

Find the Solis 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 Solis 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