GE
Shorted or Miswired Switch Circuit
Garbage disposal turns on by itself intermittently
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Moisture in wall switch, Shorted switch contacts, Shared neutral or backfeed from another circuit, Defective air switch (if equipped)
How to Fix / Troubleshooting
Safety first: Turn OFF the breaker supplying the disposal before troubleshooting. This condition is hazardous.
- Step 1 – Inspect wall or air switch: Remove the wall switch or air switch button and check for moisture, corrosion, or loose wiring. Dry and tighten connections as needed.
- Step 2 – Replace suspect switch: If the switch feels sticky, intermittently connects, or shows corrosion, replace it with a new, properly rated switch or air switch kit.
- Step 3 – Check for shared circuits: Have an electrician verify that the disposal is not improperly tied into another circuit that could backfeed power.
- Step 4 – Test operation: After repairs, restore power and monitor the disposal for several days to ensure it no longer starts unexpectedly.
Warning: A disposal that starts unexpectedly is extremely dangerous. Do not use the sink until the issue is resolved.
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Repair Difficulty
Hard
4/5
Required Part
Wall Switch or Air Switch Kit
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