Electric drive motor removed from a washing machine

Generic photo: Poo (Wikimedia Commons user) · Public Domain

How to test a wax motor (dispenser, lid lock, diverter actuators)

A wax motor is a slow thermal actuator: a small heater melts wax that pushes a plunger out over a minute or so. Test the heater resistance and watch it extend when powered.

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
Live-voltage checks are a caution step: insulated probes, one hand, clips attached before power is restored, stay clear of terminals

Diagnostic steps

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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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