Identify the normal start method
Describe an air button, wall switch or batch-feed stopper. State whether anything changed after work under the sink and whether a protective device operated.
Avoid improvised electrical checks
Keep the appliance isolated if its condition is uncertain. A model reference and clear accessible photograph help plan an assessment without opening switchgear or exposing wiring.
A useful distinction
A failed air-control accessory can sound exactly like a silent appliance. The normal starting method therefore belongs in the first message, alongside whether the sink still drains, rather than only the product badge.