InSinkErator Loose Electrical Connection / Intermittent Power

Disposal runs intermittently when the sink or unit is bumped

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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

Loose wire nut in junction box, Loose plug in receptacle, Broken conductor in power cord, Loose internal connection at motor terminals

How to Fix / Troubleshooting

Safety first: Turn off the breaker before touching wiring or the unit.

  • Check plug and outlet: For corded units, ensure the plug fits snugly. Replace a worn outlet that allows movement.
  • Inspect junction box: For hardwired units, remove the wiring cover and tighten all wire nuts. Tug gently on each wire to ensure it is secure.
  • Examine cord: Flex the cord gently along its length. If the unit cuts in and out when the cord is moved (with power off during testing), replace the cord.
  • If problem persists: Internal connections may be loose. Replacement of the disposal is recommended.
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Repair Difficulty

Medium 3/5

Required Part

Power Cord Kit
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