What does Growatt error 08 mean?
08 means the inverter's internal DC (bus) voltage went too high. With a lithium battery fitted without a communication cable, the battery voltage settings are a common cause.
Why does code 08 appear?
- Lithium battery charging voltage settings are too high.
- Panel voltage is close to the limit.
- A part inside the inverter is faulty.
What can you safely check for 08?
- Switch the inverter off, wait 5 minutes and switch it on again.
- Note the code and the time (strong sun, or battery full) so you can tell the mistri.
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 08 returns after a restart, call a solar mistri. Checking settings and panel voltage is their job. 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.