What does Growatt error 05 mean?
05 means there is a short circuit on the inverter's output (the house wiring or an appliance), so it cut the output at once.
Why does code 05 appear?
- A faulty appliance (fan, motor, iron) is plugged in.
- Wires are touching somewhere in the house wiring.
- Rain water got into a socket or switchboard.
What can you safely check for 05?
- Switch off all appliances, then restart the inverter.
- Turn appliances on one at a time. The one that brings the code back is faulty.
- Don't touch a wet socket or switchboard.
Safety: never reach into an electrical panel, board, gas pipe or the inside of an inverter yourself. You can get a shock or release gas. This is a mistri's job.
When should you call a mistri?
If 05 shows with everything switched off, the wiring or the inverter is at fault: call a mistri. An inverter carries DC current from the panels and battery that can kill, even after the mains is off. Never open the inverter cover or the DC wires yourself.