The short answer
On a Uniique dishwasher, standing water at the end of a cycle is a blockage far more often than a failed pump, and most of the blockages are within reach without tools. Work from the tub outwards: filter, then the hose route, then the disposer connection. On a bought-in platform the door, the latch and the control are the parts the badge does not change, so they lead.
What you are actually seeing
- The tub refills itself after a drain — A siphon, which means the hose has lost its high loop.
- Foam sits on top of the water — Detergent, not blockage.
- The water is dirty and smells — Debris has been sitting in the sump for a while.
- NEAR MISS — water on the floor rather than in the tub — That is a leak and it has its own page.
Causes, most likely first on this dishwasher
- Filter and sump clogged with food debris, glass or labels — Ranked first on Uniique: on a bought-in platform the filter is a fine mesh with a small sump under it, and it fills within months if nobody lifts it out. On this one, remember that the door, the latch and the control are what the badge does not change, so they come first.
- The hose route is stopping the water leaving — Second: the hose is pushed into the cabinet when the machine is levelled and nobody looks at it again.
- Disposer knockout plug still in place, or the disposer is full — Third: a new installation that has never drained is almost always the knockout plug, and no amount of pump work will change that.
- Something hard has reached the pump — Ranked last here, deliberately: the pump sits directly under the sump on these platforms, so anything the filter misses arrives there within one cycle.
Check in this order, and why
- First — lift the filter out of the tub floor and look at it and the sump beneath — This is free, it needs no tools, and it settles most of these faults on its own.
- Then — pull the machine forward far enough to see the whole hose run — A crush or a lost high loop is visible in seconds and costs nothing to correct.
- Third — check whether the machine has ever drained properly, and look at the disposer connection — A machine that has never drained since installation is a different fault from one that stopped.
- Only then — listen at the drain part of the cycle for a hum with no water moving — A humming pump is jammed; a silent one is a different fault, which is why it comes after everything above it.
What an owner can safely check
- Remove and wash the filter, then clear the sump under it — Twist the filter out, wash it under a tap with a brush, and scoop out what is sitting in the sump before refitting it.
Tools: brush, clothAbout 20 min
- Run the disposer, then check the connection at its inlet — Run the disposer with water first. If the machine is newly installed, the knockout plug in the disposer inlet is the first suspect.
About 10 min
- STOP here if the next thing to check is behind a fixed panel — Everything above can be done without tools on live parts. Past this point it is a technician job.
Before you open anything
Safety
Switch the machine off at its breaker before reaching into the sump or behind the machine — the drain pump can start on a timer. Standing water in a dishwasher can be hot enough to scald, so let it cool before you bail it out. Broken glass in a sump is the commonest injury on this job: bail with a jug and wipe with a cloth rather than feeling around with bare fingers. Never work behind the machine with the power on and the floor wet.
When it stops being an owner job
Call once the filter, the hose route, the disposer connection and the air gap are all clear and the water still stands. At that point the pump or the control is the suspect and both need the machine out and the power off. Call sooner if the machine trips a breaker, if water is appearing on the floor as well as in the tub, or if there is glass in the sump you cannot safely clear.
Nearest pages of this class
What this page does not cover
This page is written for the Uniique dishwasher as a class, not for one family or one model line. Where a family-specific page exists for your unit it is linked above and it is the more specific answer. Deliberately not here: part numbers, wiring colours, torque figures and any measured value, all of which differ by family.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
