McAlpine Incorrect Switch Type or Wiring

Disposal starts but immediately stops when you release the wall switch (no continuous run).

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Possible Causes

Momentary (bell) switch used instead of latching switch, Miswired McAlpine air switch and wall switch combination, Faulty latching contacts in switch

How to Fix / Troubleshooting

Safety first: Isolate power at the breaker before working on the switch.

  • Check switch type: Ensure the wall switch is a standard latching on/off switch, not a momentary push-button.
  • Inspect wiring: Confirm the live feed and switched live are correctly connected according to the McAlpine wiring diagram.
  • Replace faulty switch: If the switch does not stay in the on position or has intermittent contacts, replace it.
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Repair Difficulty

Easy 2/5

Required Part

Wall Switch
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