The answer, before the detail
Short answer: door, hose, suds or sump, in that rough order of likelihood on this machine. Start with a door that no longer closes square on its seal. Two of the four are free to fix and need nothing more than a cloth and a look.
What the dishwasher is actually doing
- Foam escaping around the door — Suds rather than a leak: too much detergent, or something in the load that foamed.
- A damp patch on the floor that appears hours later — A slow drip from a fitting collecting on the base and finding its way forward.
- A leak that only happens on full loads — Overfilling, or an item deflecting spray straight at the door seal.
- NEAR MISS — condensation running down the front of the door after opening — Steam released at the end of a hot cycle condenses on the door and the worktop above. That is not a leak.
What actually causes this, ranked
- A door that no longer closes square on its seal — This heads the list because the evidence is at eye level and the fix is usually a cloth: a smear of grease or a stray label on the gasket is enough to run water onto the floor every cycle. First, because nothing else on the list explains as many of these calls, and ruling it out costs nothing but a few minutes. A compact build trades margin for footprint, so the ranking is dominated by how and where it is used rather than by what is inside it.
- A clamp that has loosened at the waste connection — This ranks where it does because the check is simple — paper under the machine and a torch — but it needs the machine eased out, which is a step beyond the door and the detergent. Second on the list — a real suspect, and the next one that can be settled by looking rather than measuring.
- Machine not level in its housing — It is on the list because it is free to check with a level and because it also explains intermittent leaks that appear only on heavy loads, when the water in the tub is deepest. It ranks third: real, but rare enough that chasing it first wastes an afternoon.
- Water escaping below the tub floor — A genuine crack in the tub is rare and usually the result of something heavy being dropped or a fixing over-tightened, but it does happen and it is the one cause here that can end a machine. Last, and the reason the order matters: it is the least likely of the four, and the three above are quicker to settle.
Check in this order, and why
- Shut the door on a strip of paper at several points and pull — Uneven resistance around the door shows where the seal is not being loaded properly. Start at this check: it is the one most likely to end the job on its own.
- Lay dry kitchen paper under the machine and run a full cycle — Where the paper wets tells you whether the source is at the front, the back or the middle. Next, because it takes the same few minutes and covers the other likely half.
- Check each foot is taking weight and the machine does not rock — A machine rocking in its housing works its door seal every cycle. Last of the owner-side checks; anything past it belongs to a technician.
The checks you can make yourself
- Clean the gasket and the door edge with hot soapy water and dry it — Work right into the channel; that is where the grease collects.
Tools: cloth, detergentAbout 20 min
- Tighten the drain hose clamp at the waste connection — Snug is enough; over-tightening a plastic spigot cracks it.
Tools: screwdriverAbout 20 min
- Adjust the levelling feet until the tub base reads level and the machine sits firm — Adjust in small steps and re-check with the door open and shut.
Tools: spirit level, adjustable spannerAbout 30 min
- STOP when the next thing to move is a fixing rather than a cover — Anything held by fasteners is holding something in place for a reason. Write down what you found and leave it there.
Before you open anything
Safety
Isolate the machine at its socket or switch before working on it, and close the water supply valve under the sink before opening any fitting. Water arriving under pressure into a cupboard does more damage in an hour than the repair costs.
When this becomes a service call
It becomes a service call at the sump. Everything above that is cloth-and-level work, and it resolves most of these complaints without a part being ordered at all.
Nearest pages of this class
What is not on this page
This is the general page for the class rather than the page for your model. Where a family- or model-specific Koldfront page exists, it is linked here and it is the one to read first. Absent by design: part numbers, torque figures, wiring detail and anything else that differs between families.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
