What you are most likely looking at
When a Criterion dishwasher trips, the timing is the evidence: on switch-on points at the supply or the motor, a few minutes in points at the heater, and on drain points at the pump. Record it, isolate the machine, and hand that over. The order below is what does the work on this page.
What you observe
- The breaker trips a few minutes into every cycle — That is the heating phase, and it points squarely at the element or its wiring. The value is in eliminating, not confirming; most of these come back negative and that is useful.
- The residual-current device trips rather than the breaker — Current is leaking to earth rather than the circuit being overloaded, which usually means water or insulation. Ask whoever else uses the machine whether they have noticed the same thing.
- A tingle from the door or the front panel — Current is reaching metal you can touch. Stop using the machine and isolate it. The value is in eliminating, not confirming; most of these come back negative and that is useful.
- Tripping only when the machine drains — That timing points at the drain pump rather than the heater. Note whether it happens every time or only sometimes, because that distinction narrows the list.
Ranked causes for this machine
- A heating element that has failed to earth — First because the element sits in water by design and because its failure produces the classic trip a few minutes into every cycle.
- Water reaching a terminal, connector or the motor — Second because a built-in machine leaks into its own cabinet unseen, and the electrical symptom is often the first visible sign.
- A damaged supply cord or a poor connection — Crushing when the machine was pushed into its housing and heat at the connection both produce trips and smells. It is worth confirming twice before you act on it, since one observation can mislead.
- A shared or undersized circuit — An installation fault rather than an appliance one, but the symptom at the consumer unit is identical. It sits above the more dramatic explanations because it is the one you are statistically likelier to have.
How to narrow it down
- Look under and behind the machine for water — A built-in appliance hides its leaks, so look at the floor of the housing rather than just the kitchen floor. The rank is a starting point, not a verdict; what you observe outranks it.
- Inspect the plug, socket and cord where you can reach them — Discolouration or melting means that connection needs attention whatever else is true. If you can only do one check, make it this one.
- Try one cold or rinse-only programme — If a cold programme completes and a heated one trips, the heater is the obvious suspect. Confirming it costs less than assuming it, which is why it is worth the few minutes.
What to try before calling anyone
- Switch off at the breaker and leave the machine isolated — Do not reset repeatedly to see what happens; that is the one action that makes a bad fault worse. It is the sort of check a technician does first, for the same reason.
About 5 min
- Close the water supply to the machine — If water is part of the picture, taking the pressure off stops it getting worse while you wait. Keep the parts you remove in the order you removed them.
About 10 min
- Leave the machine off until it has been looked at — Leave the breaker off rather than relying on nobody using it in the meantime. Give it a moment rather than glancing; the thing you are looking for is not always obvious.
About 5 min
- Stop at this point: what follows needs a meter on a live circuit — Everything beyond here belongs to somebody with a meter and the habit of using it properly.
What to turn off before you start
Safety
Isolate the machine at the plug or the breaker before you open it. Some components hold energy after isolation, which is why service manuals say to wait. Do not run a cycle to test something while the machine is open or pulled out of its housing. The switches that sense the door stay exactly as they are.
The line between a fix and a call
One rule decides it: the owner side of an electrical fault ends at the breaker switch, and that is where it should end. It is not about difficulty; it is about what happens when something goes wrong. Call the same day if the breaker trips, the machine is wet inside its door panel, or you can smell hot plastic.
Nearest pages of this class
Generalized information
This page is written for the Criterion dishwasher as a class rather than for one family or model line.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
