The F5 error code on a Kenmore microwave indicates a door switch fault. This is a critical safety component — microwave radiation must be contained inside the cavity, and the door switches ensure the magnetron only operates with the door fully latched.
Causes
- Failed primary or secondary door interlock switch
- Damaged door latch that does not fully depress the switch
- Broken door switch actuator (plastic tab that presses the switch)
What To Do
- Do not attempt to bypass or defeat door switches — this is a serious safety hazard involving microwave radiation.
- Inspect the door latch tabs for breaks or cracks.
- Professional door switch replacement is required — this is one of the most common microwave repairs and is typically quick and inexpensive.
Safety Warning: Never operate a microwave with a suspected door switch fault. Always have door switches tested by a qualified technician.