The disposal will not turn on at all; there is no humming, no sound, and no movement when the wall switch is flipped.

Safety first: Do not work on live circuits. Turn off the breaker before opening any electrical boxes.

• Check breaker and GFCI: Inspect the main panel for a tripped breaker and reset if necessary. If the disposal is on a GFCI outlet, press RESET.
• Test wall switch: Replace the switch if it feels loose or does not click firmly. A simple continuity tester can confirm failure.
• Inspect terminal block: Remove the wiring cover on the Miele disposal and verify all connections are tight and correctly matched (line, neutral, ground).
• Check power cord: For plug-in models, try another appliance in the same outlet. Replace the cord set if damaged.