Growatt Fault Codes

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Growatt Error Codes

Error CodeDescriptionSolution
No AC connectionNo utility grid connected or utility grid power failureThis error would normally occur during a grid failure, if you still have electricity connected to your property then check your AC isolator or circuit breaker. If both the isolator and CB are ‘on’ and the problem persists submit a maintenance service request.
AC V outrangeUtility grid voltage is out of permissible rangeThis 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.
AC F outrangeUtility grid frequency is out of rangeThis 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.
Over temperatureTemperature out of rangeRestart inverter. If still present, contact Growatt. NOTE: Ensure inverter is not covered causing the inverter to overheat
PV isolation lowInsulation problemSubmit a maintenance service request
Output high DCIOutput current DC offset too highRestart the inverter. If the problem still persists submit a maintenance service request.
Residual 1 highLeakage current too highRestart the inverter. If the problem still persists submit a maintenance service request.
PV voltage highDC input voltage is exceeding the maximum tolerable valueDisconnect DC switch immediately and switch off system. Submit a maintenance service request.
Auto test failedAuto test failedRestart the inverter and fault will clear.
100Voltage faultSubmit a maintenance service request.
101Communication faultTurn off the DC switch and make the inverter totally shut down. Turn on the DC switch to see if the error still exists. If the error persists submit a maintenance service request.
102Consistent fault. Data received by master and slave processor are differentTurn off the DC switch and make the inverter totally shut down. Turn on the DC switch to see if the error still exists. If the error persists submit a maintenance service request.
116EEPROM FaultWhen the inverter displays Error: 116, it means there is failure in reading or writing EEPROM.
1. Check when the error appears: if in the morning, if only in the morning, contact Growatt for support.
2. If the error appears all day; (a) restart the inverter, check if the error still exists. (b) If the fault is sustained, the control board needs to be replaced. Submit a maintenance service request.
117Relay faultThere is something wrong with the relay circuit. Restart the inverter, if the problem still persists submit a maintenance service request.
118Init model faultSubmit a maintenance service request.
119GCFI device damageSomething may be wrong with the GCFI device inside the inverter.
(a) Restart the invert for 2-3 times, check whether the error still exists.
(b) If the error still exists submit a maintenance service request.
120HCT FaultWhen the inverter shows Error 120 it means something is wrong with the current sensor. Restart the inverter and if the error persists submit a maintenance service request.
121Communication fault, master processor can’t receive data from slave processorSee error 101 and 102.
122Bus voltage faultSubmit a maintenance service request.

Goodhew Electrical and Solar offers maintenance and servicing for all inverters and solar systems. Contact our team today for more information.