Symptoms
- Display shows 'door open,' 'PLS close door,' or similar despite the door being shut
- Door latches normally and doesn't feel loose
- Microwave won't start while this message shows
- May happen consistently or only intermittently
Likely causes
- CommonDoor switch misreading despite the door being closedOne of several interlock switches can fail in a way that reports the door as open.
- PossibleDebris or misalignment preventing a switch from fully engagingBuildup near the latch area can prevent a switch from making full contact even though the door looks closed.
- Less commonControl board misinterpreting a switch signalLess common, but possible if switches test fine individually.
What to do
- Open and firmly close the door a few times, listening for a clear, consistent click each time.
- Clean the door edge and latch area of any debris that might prevent full contact.
- Unplug the microwave for about a minute to reset the control board, then retry.
- Do not attempt to force the microwave to run by jamming or taping the door switches; this defeats an important safety feature.
- Note whether the message is constant or comes and goes, which can help a technician isolate a specific switch.
- Have a technician test and replace the faulty door switch, since this component is directly tied to safety.
Tools and parts
- Soft cloth
Microwave door interlock switchSearch: “microwave door interlock switch replacement”
When to call a pro
If cleaning and a reset don't clear the message, have a technician test and replace the faulty door switch.
Safety
Use caution
Never bypass, tape, or jam a door switch to force the microwave to run; these switches are a key safety feature that prevents energy leakage.