Renogy 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.
Models covered: every code below applies to the Renogy Rover 20A/30A/40A, Rover Li 20A/30A/40A.
All documented codes
E1 warning
The controller has detected that the battery is over-discharged (its voltage dropped below… E2 warning
The controller has detected battery over-voltage: the battery voltage has risen above its … E3 warning
The controller reports a battery under-voltage condition: battery voltage is below normal … E4 danger
Load short circuit: the controller detected a short across its load output terminals and s… E5 warning
Load overload: the current drawn through the controller's load output exceeded its rated l… E6 warning
Controller over-temperature: the controller's internal temperature exceeded its safe limit… E8 warning
PV (solar) input over-current: the current coming from the solar array exceeded the contro… E10 danger
PV (solar) over-voltage: the solar array's voltage exceeded the controller's maximum input…
The controller has detected that the battery is over-discharged (its voltage dropped below… E2 warning
The controller has detected battery over-voltage: the battery voltage has risen above its … E3 warning
The controller reports a battery under-voltage condition: battery voltage is below normal … E4 danger
Load short circuit: the controller detected a short across its load output terminals and s… E5 warning
Load overload: the current drawn through the controller's load output exceeded its rated l… E6 warning
Controller over-temperature: the controller's internal temperature exceeded its safe limit… E8 warning
PV (solar) input over-current: the current coming from the solar array exceeded the contro… E10 danger
PV (solar) over-voltage: the solar array's voltage exceeded the controller's maximum input…
Which of these codes apply to your model?
Not every code below exists on every Renogy solar charge controller. Pick your model number to see only the table that applies to it — and which codes it will never show.