What does Growatt error 02 mean?
02 means parts inside the inverter got too hot. As a warning the inverter beeps; as a fault it shuts itself down so the parts don't burn.
Why does code 02 appear?
- The inverter is in a closed or hot place with no airflow.
- The air vents are blocked with dust, or the fan is not working properly.
- The load is too high, such as an AC and a motor together.
- A loose temperature sensor inside.
What can you safely check for 02?
- Switch off some heavy appliances to reduce the load.
- Keep space open around the inverter. Wipe dust off the outside with a dry cloth.
- Once it cools, switch the inverter off and on again after 5 minutes.
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 02 shows even in a cool place with low load, call a solar mistri. Changing the fan or sensor is work inside the unit. 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.