Whirlpool Hood Error Code F3C

F3C indicates a cavity temperature sensor failure. The control board is receiving a signal from the temperature sensor that is outside the acceptable range, which could mean the sensor has failed, its wiring connector is loose or damaged, or the control board itself has a fault. The unit will not operate normally until the issue is resolved.

Operating the hood with an active F3C code is not recommended. The cavity temperature sensor is a safety component that helps prevent overheating. Without a functioning sensor, the control board cannot accurately regulate thermal conditions, which could pose a risk to the appliance and surrounding cabinetry.

Disconnecting power and reconnecting it may temporarily clear the F3C code, but if the underlying sensor or wiring fault still exists, the code will return once the unit runs again. A reset alone is not a fix. The sensor connection, wiring harness, and sensor resistance should all be inspected and tested to address the root cause.

Some homeowners comfortable with basic appliance work can resolve this code by unplugging the unit and reseating the sensor's wiring connector, which sometimes clears the fault. Testing the thermistor with a multimeter and replacing it if faulty is within reach for a knowledgeable DIYer. However, if the control board needs replacement, that repair involves higher-voltage components and is generally better handled by a qualified technician.

Repair costs vary depending on the root cause. A replacement cavity temperature sensor typically costs in the range of $15 to $60 for the part alone. If the main control board is the cause, parts can range from $80 to $200 or more. Adding professional labor will increase the total cost significantly.