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Growatt solar is one of the brands that Static Electrics recommends when it comes to top-quality solar systems. They are reliable and efficient, and a great choice for a range of home and workplace solar PV systems. So, to help the Growatt solar inverter owners out there, we have put together a list of common faults and error codes that you may see when your solar inverter and solar system isn’t working as it should be.

If you see any of these faults or would like further information regarding your Growatt solar inverter, give Static Electrics a call today on 1300 206 004 and we can assist.

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Solar systems are not a new concept when it comes to energy production, however, they are becoming more and more popular throughout Australia as time goes on. With their eco-friendly approach and the potential for lower electricity bills, solar power systems are an increasingly common choice for homes and businesses. However, just like anything, they can have a few errors pop up occasionally.

Growatt Inverter Warning Messages

Warning messages will be designated as a (W) on your inverter, followed by a number – otherwise known as a Warning Code. They do not directly relate to a fault and can generally be cleared through a shutdown and restart, or the inverter will re-balance the system itself.

ERROR DESCRIPTION SUGGESTED ACTION
No AC Connection Utility grid is not connected or there is a utility grid power failure Check the AC wiring and then contact Growatt.
AC F Outrange Utility grid frequency is out of permissible range. Check grid frequency and if the error message is still visible and the grid frequency is within range, contact Growatt.
AC V Outrange Utility grid voltage is out of permissible range. Check grid voltage and if the error message is still visible and the grid voltage is within range, contact Growatt
Over Temperature The temperature is out of the appropriate range. Check the inverter operation state and if the error message is still showing, contact Growatt.
PV Isolation Low An insulation problem is occuring Check if your solar panel enclosure and inverter are grounded properly, as well as check if the DC breaker is wet. If the error message is still showing after checks, contact Growatt.
PV Voltage High The DC input voltage is exceeding the maximum tolerable value The DC switch must be disconnected immediately.
Output High DCI The output current DC offset is too high Restart your inverter and if the error message is still showing, contact Growatt.
Residual I High Leakage current too high Restart your inverter and if the error message is still showing, contact Growatt.
Auto Test Failed Auto test was not passed Restart your inverter and if the error message is still showing, contact Growatt.

Growatt Inverter Error Codes

ERROR CODE DESCRIPTION SUGGESTED ACTION
100 2.5 V Reference Voltage Fault Consult your solar electrician
101 Communication Fault Consult your solar electrician
102 Consistent fault, as the data that is received by the Master and Slave processor differs. Can be caused by utility grid voltage or frequent frequency change. Restart your inverter and if the error message is still showing, check utility grid. If you require help or error message continues showing, contact Growatt.
116 EEPROM Fault Consult your solar electrician
117 Relay Fault Consult your solar electrician
118 Init Model Fault Consult your solar electrician
119 GFCI Device Damage Consult your solar electrician
120 HCT Fault Consult your solar electrician
121 Communication fault. Master processor can’t receive data from Slave processor. Restart your inverter and if the error message is still showing, contact Growatt.
122 Bus Voltage Fault Consult your solar electrician

For further Growatt inverter manuals and product information, head to the Growatt website – ginverter.com.au.

If you would like any assistance with your solar system, inverter or panels throughout the Sunshine Coast and Brisbane contact Static Electrics at 1300 206 004 and we can help.