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Error codes by brand

GoodWe error codes

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

Battery codes

  • Air Switch FaultThe air switch is not functioning properly.
  • Battery OvervoltageBattery voltage is too high.
  • Battery UndervoltageBattery voltage is too low.
  • Cell voltage difference is extremely highSignificant voltage imbalance between cells
  • Circuit-Breaker FailureFault in the circuit breaker
  • Communication FailureLoss of communication between components
  • High TemperatureBattery temperature is too high.
  • Inconsistent Master and SlaveMaster/slave configuration mismatch detected.
  • Inconsistent Software VersionInconsistent Software Version
  • Insulation FaultInsulation safety failure detected.
  • Interlock FailureCommunication or connection failure within the battery system.
  • Internal Communication FaultCommunication issue detected within battery components.
  • Low TemperatureBattery temperature is too low.
  • Low Temperature DischargingLow Temperature Discharging
  • Master Control Communication LostCommunication Lost with Master Control
  • MOS FailureMOS Failure
  • MOS OvertemperatureMOS Overtemperature
  • Multi Master Control FailureMultiple Master Control Failure
  • OthersGeneric error condition.
  • Overcurrent ChargingExcessive current is being supplied to the battery during charging.
  • Overcurrent DischargingExcessive current is being drawn from the battery during discharging.
  • Overcurrent When ChargingExcessive current during charging
  • Overcurrent When DischargingExcessive current during discharging
  • Precharge FaultIssue occurring before charging begins.
  • Relay FaultA relay within the system has failed.
  • Slaver Control Communication LostCommunication Lost with Slave Control
  • SN FailureSerial Number Failure
  • SN FaultSerial number failure detected.
  • Temp. sensor failureFailure of the temperature sensor
  • Temp. Sensor FaultTemperature sensor error detected.
  • Temperature Difference ExceptionTemperature discrepancy detected within the battery system.
  • Temperature ExceptionTemperature is out of acceptable range
  • The cell voltage difference is extremely highHigh Cell Voltage Difference
  • Under voltageVoltage is below acceptable level
  • Voltage Balance FaultDiscrepancy in voltage levels across battery cells.

Inverter codes

  • 1Utility Loss
  • 2Grid Overvoltage
  • 3Grid Undervoltage
  • 4Grid Overfrequency
  • 5Grid 10min Overvoltage
  • 6Grid Overfrequency
  • 7Cavity Overtemperature
  • 8Grid Frequency Instability
  • 9

Find the GoodWe 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.

GoodWe warranty phone
0399183905
GoodWe warranty email
service.au@goodwe.com
GoodWe service network
Open the manufacturer's service page

  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
Anti-islanding
  • 10LVRT Undervoltage
  • 11HVRT Overvoltage
  • 12Abnormal GFCI 30mA
  • 13ARC Fault
  • 14DC Bus High
  • 15Abnormal GFCI
  • 16Large DC of AC current L1
  • 17Large DC of AC current L2
  • 18Low Insulation Res. (Earth Fault Alarm)
  • 19Abnormal Ground
  • 20Anti Reverse current protection for hardware
  • 21Internal Comm Loss
  • 22AC HCT Check abnormal
  • 23GFCI HCT Check abnormal
  • 24Relay Check abnormal
  • 26Flash Fault
  • 27DC Arc Fault
  • 28AFCI Self-check Fault
  • 29Cavity Overtemperature
  • 30BUS Overvoltage
  • 31PV Input Overvoltage
  • 32PV Continuous Hardware Overcurrent
  • 33PV Continuous Software Overcurrent
  • 34String1 PV String Reversed
  • 35String2 PV String Reversed
  • AFan FailA fault occurs in all fans of the inverter.
  • AFCI FaultAFCI module detected a failure
  • Anti Reverse power FailureReverse power detected
  • Anti-islandingThe inverter has detected a disconnection from the grid.
  • ARC FaultThe PV string cables arc or are in poor contact.
  • Back-Up Over LoadBack-up side is overloaded
  • Cavity Over-temperatureInternal temperature too high
  • Cavity OvertemperatureThe inverter's internal temperature is too high.
  • DC Arc FaultA fault in the DC circuit detected.
  • DC Bus HighDC Bus High
  • DC inject HighDC injection exceeds the allowed range.
  • DC Injection HighDC component in AC output is too high
  • DC-SPDLightning strike detected
  • DCI HighDC Injection High
  • EEPROM FailInternal memory failure
  • EEPROM R/W FailureEEPROM read/write failure
  • EFan FailA fault occurs on the external fan of the inverter.
  • ExFan FailExternal Fan Failure
  • Fac FailFrequency Adjustment Failure
  • FAC FailureGrid frequency is not within permissible range
  • GFCI FailureGround Fault Circuit Interrupter failure.
  • GFI Chk FailGround Fault Detection failure
  • Gnd I FailGround I Failure
  • Grid Frequency InstabilityUtility grid exception. The actual grid frequency change rate does not meet the requirement of the local grid standard.
  • Grid OverfrequencyThe actual grid frequency is too high.
  • Grid OvervoltageThe grid voltage exceeds acceptable limits.
  • Grid Rapid OvervoltageThe grid voltage is temporarily very high.
  • Grid Under-frequencyGrid frequency is lower than requirements.
  • Grid UnderfrequencyThe actual grid frequency is too low.
  • Grid UndervoltageThe grid voltage is below acceptable limits.
  • Ground FailureGround leakage current is too high
  • Ground I FailThe input insulation impedance to the ground decreases when the inverter is operating.
  • IFan FailA fault occurs in the internal fan of the inverter.
  • InFan FailInternal Fan Failure
  • Internal Comm LossInternal communication error
  • Inverter FailureGeneral inverter failure.
  • Isolation FailIsolation Failure
  • Isolation FailureGround insulation impedance of PV string is too low
  • Low Insulation Res.(Earth fault alarm)Insulation resistance is low, indicating a potential fault.
  • Night DCSPS FaultTemporary environmental issue
  • No displayInverter display is not working.
  • Over TemperatureTemperature inside of the inverter is too high
  • PID ErrorPID module abnormality
  • PV Over VoltagePV voltage is too high
  • PV Reverse FaultIncorrect PV string connection
  • PV** over CurrPV hardware current over range
  • PV/BAT OvervoltageThe PV or BAT voltage is too high
  • Ref-V Chek FailReference Voltage Check Failure
  • Relay Check FailRelay operation check failed.
  • Relay Check FailureSelf-checking of relay failure
  • Relay FailRelay Check Failure
  • SPI Comm FailCommunication failure with the SPI chip
  • SPI FailureInternal communication failure
  • Utility LossPublic grid power is not available (power lost or on-grid connection fails)
  • Utility Phase FailureThe sequence of the on-grid wire is incorrect
  • Vac FailVoltage AC Failure
  • VAC FailureGrid voltage is not within permissible range
  • Ver. ErrorWrong software version.