Growatt inverters

If your inverter is less than 5 years old, there’s a good chance you still have warranty (assuming the manufacturer is still in business).
Not sure if the inverter is faulty, or if it is actually reporting a fault elsewhere in your solar system?

See below for the error codes recognized with your Growatt inverter/solar system.

If you are still unsure call us to see if we can help you over the phone, or book in a Solar Health check.
You could save big $$$’s with one of our Solar accredited teams expert appraisal. 
If you believe that your Inverter may be subject to an Insurance claim please contact us on 07 3274 4365 and advise us of the details

COMMON GROWATT SUNGOLD FAULT MESSAGES AND ERROR CODES 

Fault

Display

Possible Action

SYSTEM FAULT

Ground I Fault

1. The ground current is too high.
2. Unplug the inputs from the PV generator and check the peripheral AC system.
3. After the cause is cleared, re-plug the PV panel and check PV-Inverter status.
4. If the problem persists please call service.

Isolation Fault

1. Check the impedance is between PV (+) & PV (-) and the PV-Inverter is earthed. The impedance must be greater than 8M.
2. If the problem persists please call service.

Grid Fault

1. Wait for 5 minutes, if the grid returns to normal, PV-Inverter automatically restarts.
2. Make sure grid voltage and frequency meet the specifications.
3. If the problem persists please call service.
4. Check grid usability.

No AC connection

1. Grid is not connected.
2. Check grid connection cables.

INVERTER FAILURE

PV Over Voltage

1. Check the open PV voltage; see if it is greater than or too close to 500VDC.
2. If PV voltage is less than 500VDC, and the problem still occurs, please call local service.

Consistent Fault

1. Disconnect PV (+) or PV (-) from the input, restart the PV-Inverter.
2. If it does not work, call service. If there is no display on the panel, please check PV-input connections. If the voltage is higher than 150V, call your local service.
During periods of little or no sunlight, the PV-Inverter may continuously start up and shut down. This is due to insufficient power generated to operate the control circuits.
Here are some more fault messages that you may see on the Growatt SunGold front panel display.

FAULT

DISPLAY

OPERATION

System Fault

Auto Test Failed

Auto test do not pass

No AC Connection

No utility; no grid connect

PV Isolation Low

Insulation problem

Residual High

GFCI Fault

Output High DCI

Output current DC, offset too high

PV Voltage High

PV panel voltage too high

AC V Outrange

Grid voltage out of range

AC F Outrange

Grid frequency out of range

Inverter Fault

Error: 100

2.5 V Reference Voltage Fault

Error: 101

Communication Fault

Error: 102

Consistent Fault

Error: 116

EEPROM Fault

Error: 117

Relay Fault

Error: 118

Init Model Fault

Error: 119

GFCI Device Damage

Error: 120

HCT Fault

Error: 121

Communication Fault

Error: 122

Bus Voltage Fault
If you are still unsure call us to see if we can help you over the phone, or book in a  Solar Health check .
You could save big $$$’s with one of our Solar accredited teams expert appraisal. 

If you believe that your Inverter may be subject to an Insurance claim please contact us on 07 3274 4365 and advise us of the details.