Growatt Inverter Error Codes
Experiencing issues with your Growatt inverter can be challenging. Understanding the specific error codes can help in diagnosing and resolving problems efficiently. Below is a comprehensive guide to common Growatt inverter error codes and their corresponding solutions.
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Growatt Inverter Error Code: No AC Connection
Description: No utility grid detected or utility grid power failure.
Solution: This error typically occurs during a grid failure. If your property still has power, check your AC isolator or circuit breaker. If both are 'on' and the problem persists, submit a maintenance service request.
Growatt Inverter Error Code: AC V Outrange
Description: Utility grid voltage is out of permissible range.
Solution: This could happen, particularly in the summer months if there is a lot of solar in your area. If the problem persists, please submit a maintenance service request.
Growatt Inverter Error Code: AC F Outrange
Description: Utility grid frequency is out of range.
Solution: Similar to the AC voltage issue, this can occur during periods of high solar activity. If the problem persists, please submit a maintenance service request.
Growatt Inverter Error Code: Over Temperature
Description: Temperature out of range.
Solution: Restart the inverter. If the error persists, contact Growatt. Ensure the inverter is not covered or placed in direct sunlight, causing it to overheat.
Growatt Inverter Error Code: PV Isolation Low
Description: Insulation problem detected.
Solution: Submit a maintenance service request to have the insulation inspected and repaired as necessary.
Growatt Inverter Error Code: Output High DCI
Description: Output current DC offset too high.
Solution: Restart the inverter. If the problem persists, submit a maintenance service request.
Growatt Inverter Error Code: Residual 1 High
Description: Leakage current too high.
Solution: Restart the inverter. If the problem persists, submit a maintenance service request.
Growatt Inverter Error Code: PV Voltage High
Description: DC input voltage is exceeding the maximum tolerable value.
Solution: Disconnect the DC switch immediately and switch off the system. Submit a maintenance service request.
Growatt Inverter Error Code: Auto Test Failed
Description: Automatic test sequence has failed.
Solution: Restart the inverter; the fault should clear. If it persists, contact Growatt support.
Growatt Inverter Error Code: 100
Description: Voltage fault detected.
Solution: Submit a maintenance service request to diagnose and resolve the voltage issue.
Growatt Inverter Error Code: 101
Description: Communication fault.
Solution: Turn off the DC switch and allow the inverter to shut down completely. Turn on the DC switch to see if the error still exists. If the error persists, submit a maintenance service request.
Growatt Inverter Error Code: 102
Description: Consistent fault; data received by master and slave processors are different.
Solution: Follow the same steps as for Error 101. If unresolved, submit a maintenance request.
Growatt Inverter Error Code: 116
Description: EEPROM fault; failure in reading or writing EEPROM.
Solution: If the error appears only in the morning, contact Growatt support. If it occurs all day, restart the inverter. If the fault remains, the control board may need replacement. Submit a maintenance request.
Growatt Inverter Error Code: 117
Description: Relay circuit malfunction.
Solution: Restart the inverter. If the problem persists, request maintenance.
Growatt Inverter Error Code: 118
Description: Initialization mode fault.
Solution: Submit a maintenance service request for further diagnosis and repair.
Growatt Inverter Error Code: 119
Description: GCFI device damage; potential issue with the Ground Fault Circuit Interrupter.
Solution: Restart the inverter 2-3 times. If the error persists, submit a maintenance request.
Growatt Inverter Error Code: 120
Description: HCT fault; issue with the current sensor.
Solution: Restart the inverter. If the issue continues, request maintenance.
Growatt Inverter Error Code: 121
Description: Communication failure; master processor not receiving data from the slave processor.
Solution: See troubleshooting steps for Errors 101 and 102. If unresolved, submit a maintenance request.