Growatt Warning 41 warning: Battery protection warning
Call a qualified installer
Urgency: high
What it means
The battery's own protection reported a problem with cell voltage, battery voltage or temperature. Battery issues always need a qualified installer.
Likely causes
- Battery cell imbalance
- Battery temperature out of range
- Battery voltage out of range
Don't try to fix this yourself
When to call a pro
Call a qualified installer now. Switch off heavy loads and don't try to repair anything yourself.
Solar systems carry dangerous voltages. Only do the safe checks listed. If unsure, call a pro.
Source: Growatt Off Grid Solar Inverter SPF 3500 ES / SPF 5000 ES User Manual v4.0 (paraphrased)