Kraus Loose Electrical Connection or Failing Switch

Kraus garbage disposal produces a chattering or rapid on-off sound when the switch is flipped.

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.

Possible Causes

Defective wall switch contacts, Loose wire nut, Failing air switch module relay, Undersized switch for motor load

Safety First: Turn OFF the breaker before working on electrical components.

Step 1 – Replace wall switch: Install a new, properly rated switch for motor loads.
Step 2 – Tighten connections: Check all wire nuts and terminal screws in the switch box and under-sink junction box.
Step 3 – Test air switch module: If using an air switch, substitute a known-good module to see if the chattering stops.
Step 4 – If unresolved: Consult an electrician to check for voltage drop or wiring issues.

Medium 3/5