Growatt Fault 58 fault: Output voltage abnormal

What it means

The inverter's output voltage went outside its normal range. Reducing the load and restarting often clears it.

Likely causes

• Heavy or unusual load
• Internal fault if it repeats

What you can safely check

1. Switch off or unplug heavy appliances (kettle, heater, geyser, pool pump) on the backup circuits.
2. Restart the inverter once using its documented switch-off and switch-on procedure.
3. If it keeps coming back, stop and call a qualified installer.

When to call a pro

If it doesn't clear on its own, happens often, or comes with burning smells, heat or noise, call a qualified installer.