Tesla Powerwall › gateway control board and firmware
Gateway shows max panel current error, output capped
reported more than once
Symptoms
- Solar production or Powerwall discharge drops to zero, or grid charging caps out, whenever house load or the export math crosses a threshold the owner never set: Panel Maximum Current stuck at the 100A default on a 200A service, a Grid Import Limit around 10kW during Storm Watch charging, or PV Export Limit left at 0kW
- App shows no clear alert, or a vague 'max panel current error'
Alerts and codes
max panel current error
The cause and the fix
Subscribers see the cause, the fixes that worked and who did them, part numbers and recent prices when a part is involved, and the field reports behind this entry.