The short answer
A dishwasher that trips a breaker or an earth-leakage device, or that smells of hot insulation, has usually let water reach something electrical. Switch off at the breaker, close the water supply, and leave it until somebody has looked at it.
Stop for any of these
- The breaker or earth-leakage device trips when the machine runs — A fault reported by the protective device.
- A smell of hot insulation from the cabinet — Isolate and call.
- Scorching at the plug, the socket or the cable — A connection that has been running hot.
- Water visible under or behind the machine with electrical symptoms — The two are almost certainly the same fault.
- A tingle from the door or the fascia — Stop at once; that is an earthing fault.
- Not this fault: a machine that simply will not start — That is the will-not-start page.
What lies behind it
- Water reaching a connection inside the machine or the cabinet — First, and the reason most of these faults exist.
- Heating element failed to earth — Second, and it trips exactly when the machine heats.
- Socket or plug degraded by damp in the cabinet — Third, and an electrician’s problem rather than an appliance one.
- Cable damaged where the machine was pushed back — Fourth, and it happens during kitchen work.
- Pump motor winding failed — Fifth, and it trips during the wash or drain phase.
- Shared circuit overloaded — Last, and identifiable because the trip depends on what else is running.
What to do, in order
- Switch off at the breaker and close the water supply — Both, before any inspection.
- Note when in the cycle the trip happens — Fill, heat, wash and drain implicate different components.
- Look for water in the cabinet and under the machine — Water and electrical faults are usually one story.
- Leave it isolated until it has been inspected — A protective device that operates once will operate again.
The safe sequence
- Switch off the breaker serving the kitchen socket — Do not rely on the machine’s own controls.
About 5 min
- Close the water supply tap under the sink — It stops a leak feeding the fault.
Tools: torchAbout 10 min
- Do not reset a tripping device more than once — A second trip is a fault report.
About 5 min
- Write down the stage at which it trips — It is the most useful thing a technician can be told.
About 10 min
- Keep the machine out of use until it is inspected — That is the whole owner-side procedure here.
Rules that apply without exception
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. Never touch a machine or a socket in a wet cabinet with the power on, never tape a damaged cable, and never reset a protective device repeatedly. If a gas appliance shares the kitchen and you smell gas: do not switch anything on or off, leave the building, and call the gas utility or your emergency number from outside. Do not look for the leak yourself.
Who to call
Call an appliance technician when this machine alone trips at a specific stage, because the timing names a component. Call an electrician when the socket, the cable or the circuit is involved, when the cabinet is damp around the supply, or when anyone has felt a tingle. Either way the dishwasher stays isolated: this is the one symptom family where waiting is clearly the cheaper option.
Related pages
Scope
Generalized across dishwasher families under this badge and carrying no internal test procedure by design. Where a family-specific or model-specific page exists it is the narrower answer. Not here: element ratings, wiring detail, socket specifications and earth-continuity procedures, all of which belong to a qualified person.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
