InSinkErator Water Intrusion into Electrical Compartment

Disposal runs but water slowly leaks from the junction box cover or wiring compartment

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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

Leak from sink flange or discharge running down exterior into wiring cover, Missing or damaged wiring cover gasket, Overfilling sink causing water to enter from above

How to Fix / Troubleshooting

Safety first: Turn off power at the breaker and do not use the disposal until the leak source is corrected.

  • Identify leak path: Dry the exterior and run water into the sink without running the disposal. Look for drips from the sink flange or discharge elbow above the wiring cover.
  • Fix primary leak: Repair sink flange or discharge leaks first (re-putty flange, replace gaskets, tighten connections).
  • Dry wiring area: Remove the wiring cover, carefully dry all components, and inspect for corrosion. Replace any corroded wire nuts and rewrap connections.
  • Replace cover/gasket: Ensure the wiring cover and any gasket are intact and properly installed.
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Repair Difficulty

Medium 3/5

Required Part

Wiring Compartment Cover
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