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Trash compactor won't start: test the key, drawer, tilt and top-limit switches

A compactor start circuit is a chain of switches in series. Prove the outlet first, then continuity-test each switch with the power off: on-off / key switch, momentary start, drawer safety, tilt and top-limit / directional. If every switch passes, the motor's centrifugal switch, the motor or the wiring is next.

Cross-checked ~60 min moderateBrands: All

Before you start

Unplug the unit or switch off the breaker before any test; built-ins often hide the outlet behind the cabinet.
Keep hands out from under the ram.
Never jumper the drawer or tilt switch to run the unit.

Diagnostic steps

Unlock all 8 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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