The short answer
On a Conservator dishwasher this complaint is usually the door not latched rather than the failure owners fear, and where it is not, power at the machine takes most of the rest. A built-in is plumbed once and then forgotten, which means its faults are usually in the installation under the sink rather than in the machine under the counter. Work the list in the order it is given and you will either fix it or know what to tell the technician.
What you observe
- Nothing happens when you start it — Latch and power, in that order.
- Water standing in the bottom at the end — A small amount is normal on some machines; a bowlful is not.
- NEAR MISS - a new noise with clean dishes — Something loose against an arm - check the load before anything else.
Causes, most likely first on this brand
- The door not latched — Top of the list here: no dishwasher will start until the latch reports closed, and a strike plate out of adjustment or a rack corner holding the door proud produces a machine that appears completely dead.
- Power at the machine — Second here: a built-in is on a circuit under the counter and a countertop model on a kitchen outlet, and in both cases a tripped breaker is far commoner than a failed control.
- A delay, a lock or a cycle not started — Third, and worth the two minutes: a delay left set or a control lock engaged holds the machine silent indefinitely, which looks exactly like a failure and is cleared from the panel.
- The water supply not reaching it — Last, and the reason the order matters: a machine that cannot fill will not begin, so a valve turned off under the sink or a tap adapter not seated presents as a dead appliance.
Check in this order, and why
- Close the door firmly and listen for the latch — Nothing else can run until this reports shut.
- Check the breaker or the outlet — One minute, and everything below it assumes power.
- Look for a delay or a lock indicator on the panel — Both hold the machine silent and both clear from the front.
What an owner can safely check
- Close the door firmly and listen for the latch — Check no rack corner or handle is holding it proud of the frame.
About 5 min
- Check the breaker and, on a countertop model, the outlet — One minute, and everything else assumes the machine has power.
About 10 min
- Reseat the tap adapter and leave the tap running during the cycle — Most countertop machines draw water through the cycle rather than storing it.
About 15 min
- STOP HERE if the next step means pulling the machine out or removing a panel — There are live terminals and standing water behind it, and that is where owner checks end.
Before you open anything
Safety
Switch the dishwasher off at its breaker before pulling it out, removing the kickplate or reaching into the sump; a capacitor can hold a charge after the power is off and there is standing water inside the machine beside live terminals. Reach into a sump slowly and with a torch - broken glass finds fingers there more often than anywhere else in a kitchen. Never run a machine with the door interlock defeated.
When to call a technician
Call when the door latches audibly, the breaker is on, no lock or delay is set and the supply valve is open, and the machine is still silent. Note whether the panel lights at all before you call, because a completely dead panel and a lit panel that refuses to start are two different faults and they need different parts.
Nearest pages of this class
What this page does not cover
This page covers full-size built-in dishwashers as a class rather than one model line. Latch designs, control layouts and lock behaviours differ by family, and where a family- or model-specific page exists for your unit it is linked below. Not here: cycle times, panel codes and part identifiers.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
