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Error codes by brand

SolaX Power error codes

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

Battery codes

  • BMS_CapMismatch_FaultThe capacity of battery packs are different
  • BMS_CellImbalanceThe capacities of cells are different
  • BMS_CellTempDiff_FaultThe temperature between cells are different
  • BMS_ChargeOCPBattery charge over current protection
  • BMS_ChgReqNoAck_FaultNo action for charging request
  • BMS_CurrSensor_FaultBattery current sensor fault
  • BMS_DishargeOCPBattery discharge over current protection
  • BMS_External_ErrThe communication between BMS and inverter is interrupted
  • BMS_Hardware_ProtectBattery hardware under protection
  • BMS_Insulation_FaultBattery insulation fault
  • BMS_Internal_Err1. DIP switch at the wrong position; 2. The communication between battery packs is interrupted
  • BMS_LowerVoltageBattery under voltage
  • BMS_Manu_Mismatch_FaultThe cell manufacture is different
  • BMS_MasterSw&SlaveSwMismatch_FaultThe software between Master and Slave are different
  • BMS_OverVoltageBattery over voltage
  • BMS_Relay_FaultBattery relay fault
  • BMS_SelfChk_FaultBMS selfcheck fault
  • BMS_SlaveSw&HwMismatch_FaultThe hardware is different
  • BMS_SlaveSwVer_Mismatch_FaultThe software between slaves are different
  • BMS_TemHighBattery over temperature
  • BMS_TemLowBattery under temperature
  • BMS_TempSensor_FaultBattery temperature sensor fault
  • BMS_VoltSensor_FaultBattery voltage sensor fault

Inverter codes

  • AcTerminalOTPAC Terminal Overtemperature Fault
  • Arc FaultArc Fault
  • ArcHW_FaultArc Communication Lost Fault
  • ArcSelfTestFaultArc Self-check Fault
  • BE01BMS_Exter_Err
  • BE02BMS_InterErr
  • BE03BMS_OverVolt
  • BE04BMS_LowerVolt

Find the SolaX Power 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 SolaX Power 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
BE05BMS_ChargeOCP
  • BE06DischargeOCP
  • BE07BMS_TemHigh
  • BE08BMS_TempLow
  • BE09CellImbalance
  • BE10BMS_Hardware
  • BE11BMS_Circuit
  • BE12BMS_ISO_Fault
  • BE13BMS_VolSen
  • BE14BMS_TempSen
  • BE15BMS_CurSen
  • BE16BMS_Relay
  • BE17TypeUnmatch
  • BE18Ver Unmatch
  • BE19MFR Unmatch
  • BE20SW Unmatch
  • BE21M&S Unmatch
  • BE22CR NORespond
  • BE23BMS_SW Protect
  • BE24BMS_536 Fault
  • BE25BMS_SelfCheck
  • BE26BMS_Tempdiff
  • BE27BMS_BreakFault
  • BE28BMS_FlashFault
  • BE29BMS_Precharge
  • BE30AirSwitchBreaker
  • BusVoltFaultDC Bus Voltage Out of Normal Range
  • DcInjOcpDCI Overcurrent Protection Fault
  • EepromFaultDSP EEPROM Fault
  • Fan1 WarningExternal Fan 1 Abnormal Warning
  • Fan2 WarningExternal Fan 2 Abnormal Warning
  • FanFaultFan Fault
  • GridFreqFaultGrid Frequency Out of Range
  • GridLostFaultGrid Lost Fault
  • GridRelayFaultRelay Fault
  • GridVolt10MFaultGrid Overvoltage for Ten Minutes Fault
  • GridVoltFaultGrid Voltage Out of Range
  • HardLimitFaultHard Limit Fault (in Australian standard)
  • IE: 0101Over Current Fault
  • IE: 0201Grid Lost Fault
  • IE: 0301Grid Voltage Out of Range
  • IE: 0401Grid Frequency Out of Range
  • IE: 0501PV Voltage Fault
  • IE: 0601DC Bus Voltage Out of Normal Range
  • IE: 1601Earth Fault
  • IE: 2201Arc Fault
  • IE01TZ Protect Fault
  • IE02Grid Lost Fault
  • IE03Grid Volt Fault
  • IE04Grid Freq Fault
  • IE05PV Volt Fault
  • IE06Bus Volt Fault
  • IE07Bat Volt Fault
  • IE08AC10mins Volt
  • IE09DCI OCP Fault
  • IE10DCV OVP Fault
  • IE11SW OCP Fault
  • IE12RC OCP Fault
  • IE13Isolation Fault
  • IE14Temp Over Fault
  • IE15Bat Con Dir Fault
  • IE16EPS Overload Fault
  • IE17Overload Fault
  • IE18BatPowerLow
  • IE19BMS Lost
  • IE20Fan Fault
  • IE21Low Temp Fault
  • IE25InterCom Fault
  • IE26INV EEPROM Fault
  • IE27RCD Fault
  • IE28Grid Relay Fault
  • IE29EPS(Off-grid) Relay Fault
  • IE30PV ConnDir Fault
  • IE31Battery Relay Fault
  • IE32Earth Relay Fault
  • IE33Parallel Fault
  • IE36Hard Limit Fault
  • IE37CT Meter Con Fault
  • IE101Power Type Fault
  • IE102Port OC Warning
  • IE103Mgr EEPROM Fault
  • IE105NTC Sample Invalid
  • IE106Bat Temp Low
  • IE107Bat Temp High
  • IE109Meter Fault
  • IE110Bypass Relay Fault
  • IE111ARM Para Com Fault
  • IE112FAN1 Fault
  • IE113FAN2 Fault
  • InternalComFaultInternal Communication Fault
  • IsoFaultIsolation Fault
  • LowTempFaultLow Temperature Fault
  • Meter FaultMeter Fault
  • Mgr EEPROM FaultARM EEPROM Fault
  • OtherDeviceFaultModel Incorrectly Set Fault
  • OverTempFaultOver Temperature Fault
  • PowerTypeFaultPower Type Fault
  • PvConnDirFaultPV Direction Fault
  • PvVoltFaultPV Voltage Fault
  • RcDeviceFaultResidual Current Device Fault
  • ResidualOCPOvercurrent Protection Fault
  • SW OCP FaultSoftware Overcurrent Protection Fault
  • TzFaultOver Current Fault