Victron Energy RV solar charge controller fault codes
MPPT/PWM solar charge controllers manage charging from RV solar panels. Errors flag battery voltage/temperature, panel over-voltage and controller overheating.
How to read the code
Read the "Err"/E-code on the display or app. Most solar faults auto-clear once voltage/temperature returns to range — but check PV wiring and battery settings.
All documented codes
Err 1 warning
Battery temperature too high. The charge controller has stopped charging because the batte… Err 2 warning
Battery voltage too high. The controller stopped charging because the battery voltage rose… Err 17 warning
Controller overheated despite reduced output current. The internal electronics are too hot… Err 26 danger
Terminal overheated. The power terminals (PV or battery screw terminals) got too hot, usua… Err 33 danger
PV over-voltage. The solar input voltage exceeded the controller's maximum rated PV voltag… Err 38 warning
PV input shutdown. The controller short-circuited its own PV input as a protective measure… Err 43 danger
On the SmartSolar MPPT RS / inverting models, Err 43 is an inverter shutdown caused by a g…
Battery temperature too high. The charge controller has stopped charging because the batte… Err 2 warning
Battery voltage too high. The controller stopped charging because the battery voltage rose… Err 17 warning
Controller overheated despite reduced output current. The internal electronics are too hot… Err 26 danger
Terminal overheated. The power terminals (PV or battery screw terminals) got too hot, usua… Err 33 danger
PV over-voltage. The solar input voltage exceeded the controller's maximum rated PV voltag… Err 38 warning
PV input shutdown. The controller short-circuited its own PV input as a protective measure… Err 43 danger
On the SmartSolar MPPT RS / inverting models, Err 43 is an inverter shutdown caused by a g…