How to test a solenoid (dispenser, ice door, lock, diverter)
A solenoid is a coil that pulls a plunger when energized. Test the coil resistance, the voltage it receives, and that the plunger moves freely.
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
Unlock all 5 steps with expected values
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Get lifetime accessOnCall 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.
