Lever microswitch, the type used for door and position sensing in appliances

Generic photo: Raimond Spekking · CC BY-SA 4.0

How to test a door switch (refrigerator, dryer, dishwasher)

Door switches tell the control or the circuit that the door is shut. Some are normally open, some normally closed, and many have more than one set of contacts (light + fan, or start circuit). Test each pair in both door positions.

Single source ~20 min easyBrands: All

Before you start

Unplug the appliance or turn off the breaker before opening panels or disconnecting parts
Take a photo of the wiring before removing any wire
Resistance and continuity tests are done with power OFF and the part isolated

Diagnostic steps

Unlock all 6 steps with expected values

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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