Whirlpool Microwave Error Code F1:Pr

F1:Pr indicates a software type mismatch detected within the electronic control board. The board's embedded firmware does not match the expected software type for this appliance. This is an internal board-level fault and not related to any user setting or external component. Replacing the electronic control board is the required repair.

The F1:Pr fault indicates the control board has detected an internal mismatch and the microwave should not be relied upon for normal operation while this code is active. The appliance may not function correctly or at all. It is best to leave the microwave unplugged until the control board has been replaced.

The total cost depends on the specific model and whether you use professional service or attempt a DIY repair. Control board parts typically range from $75 to $200 or more depending on the model. Professional labor to diagnose and replace the board can add $100 to $200 on top of parts costs. In some cases, especially for older or lower-end models, replacement of the entire microwave may be more cost-effective than a control board repair.

The repair requires replacing the electronic control board, which involves working inside the microwave cabinet. Microwave capacitors can retain a lethal electrical charge even after the unit is unplugged, so this repair carries significant safety risk for anyone not trained to discharge high-voltage capacitors. If you are not familiar with microwave internal components, professional service is strongly recommended.

No, unplugging or resetting the microwave will not clear the F1:Pr error. The fault is a firmware-level software type mismatch stored within the control board itself. Because it is not caused by a transient condition, the error will return immediately when power is restored. Only replacing the control board will resolve the fault.