The short answer
A leaking Walsh points first at a door gasket that is dirty, set or displaced. This is the one appliance fault where doing nothing costs more than the repair, because the water goes under the units. Put paper towel down and run a short cycle: that single step names the cause faster than any inspection.
What you are looking at
- A swollen or stained plinth and kickboard — A slow leak that has been running for a long time.
- NEAR MISS: the floor is dry but the dishes are wet and dirty — Read the cleaning page instead.
What it usually turns out to be, in order
- A door gasket that is dirty, set or displaced — The gasket runs round the door or the tub opening. Food debris on the sealing face, a section pushed out of its channel, or rubber that has hardened with age, all let water out at the bottom corners first. Ranked first on this unit: it is the only seal on the machine that is opened and closed every day, and it is the one that collects food, which counts for more here because this is a nameplate you will not find a service bulletin for, so the ranking below is built from the failure modes of the class rather than from a model-specific note.
- A machine out of level or a misaligned door — A dishwasher leaning forward puts the water line above the bottom of the door seal. Second on this unit, because it explains a leak from one corner rather than all round, and it is an installation fault rather than a failure.
- A failed tub, sump or pump seal — The seal where the motor shaft enters the sump, or a split in the tub itself, leaks only when the machine is running and under pressure. Bottom of the list, deliberately: everything above it is free, visible and far more likely, and this one is the only parts job on the list.
The order to check in
- Run a finger right round the gasket and look for debris or a section out of its channel — Grease and soil on the sealing face is the commonest single cause.
- Put a level across the top of the door frame and along the tub — A leak at one corner with a machine off level has explained itself.
- Only once the door seal, the detergent, the levelling and the hoses are all clean — A leak that appears only with the pump running, from under the middle, is the sump.
The checks you can make yourself
- Wash the door gasket and the face it seals against with warm soapy water, and press any displaced section back into its channel — Check the whole run, including the bottom corners where it always starts.
Tools: warm soapy water, a clothAbout 15 min
- Level the machine with its adjustable feet, front to back and side to side — Check the door closes evenly against the tub with no gap at either bottom corner.
Tools: a spirit level, a spannerAbout 25 min
- STOP AT THIS POINT if the next step needs a meter on live terminals — That is where an owner check ends and a service call begins.
Before you open anything
Safety
Water and mains electricity are together in this fault. Switch the dishwasher off at its breaker or unplug it before pulling it out, and shut the supply valve under the sink before touching a hose. Dry the floor before you kneel on it, and do not run the machine with the kick plate off. If water has reached a socket or the machine trips a breaker, leave it off and call.
Where an owner check ends
Call once the gasket is clean and seated, the detergent is right, the machine is level and the hose connections are dry, because what is left is the sump or the tub. Call straight away if the machine trips a breaker, if water has reached a socket, or if the plinth and floor are already swollen.
Where to go next in this class
What this page does not cover
This page covers the Walsh dishwasher as a class, not one family or model line. Where a family- or model-specific page exists it is linked here. Deliberately not here: seal part numbers, torque figures and any pump removal sequence, all of which differ by family and belong on the page for that family.
Links: - [Walsh dishwasher dead or not starting a cycle: what to check](/blog/walsh-dishwasher-wont-start) - [A Walsh dishwasher that runs a full cycle and cleans nothing](/blog/walsh-dishwasher-cleaning-performance) - [Water escaping from a Westbend dishwasher, and where it comes from](/blog/westbend-dishwasher-water-leak)
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
