Garbage disposal turns on and off intermittently when the wall switch is left in the ON position.

Safety First: Turn OFF the circuit breaker before working on any electrical connections.

Step-by-step:

• 1. Inspect the wall switch: Remove the switch cover plate and gently pull out the switch (with power OFF). Check for loose wires or backstab connections. Tighten terminal screws or re-terminate as needed.
• 2. Check under-sink junction box: If the KitchenAid disposal is hard-wired, open the junction box cover and inspect wire nuts for secure connections. Re-twist and secure with new wire connectors if any are loose or corroded.
• 3. Inspect disposal terminals: On corded models, ensure the plug fits snugly in the outlet. On hard-wired models, remove the disposal's electrical cover plate and verify that the wire connections to the unit's leads are tight.
• 4. Replace faulty switch: If the switch feels hot, crackles, or is visibly worn, replace it with a new 15A or 20A single-pole switch rated for motor loads.
• 5. Test operation: Restore power and test the disposal several times to confirm stable operation.

When to call a technician: If you are not comfortable working with household wiring or if the breaker itself is tripping intermittently, contact a licensed electrician.