The short answer
On a Janska dishwasher, water on the floor or in the cabinet is usually foam pushing water out of the door rather than a failed pump seal. Second, and worth checking in the same hour, is a weeping supply or drain fitting. The top of that list is owner work; only the last cause needs a technician.
What you are looking at
- The cabinet floor beside it is damp — Swollen or stained cabinet base with a dry room floor.
- It leaks with some loads and not others — The same cycle behaves differently by load.
- Water appears at the front of the door — A line of water along the floor at the door.
- NEAR MISS -- damp only under the sink — That may be the plumbing rather than the machine; check the stop and the trap.
Causes, most likely first on this kind of unit
- Too much detergent, or the wrong kind — Foam lifts water over the door seal and out along the floor. Ranked first on a Janska compact machine, often fed from a faucet: this is the commonest leak of all and the only one that costs nothing to test.
- A supply or drain fitting is weeping — The inlet fitting, the supply stop and the drain connection are all under the cabinet where nobody looks. Ranked here because a weeping fitting wets the cabinet without the machine running at all.
- The door gasket has hardened or is fouled — The gasket runs round the tub opening. Ranked here because a broken seal at one point leaks in the same place every time.
- The pump seal or tub seal — A seal that has hardened drips under the machine, worst when the pump is loaded. It comes last because it is the one cause here that is not an owner repair, so it is last.
Check in this order, and why
- Run a cycle with no detergent at all — A machine that stays dry through a detergent-free cycle was foaming, not leaking.
- Dry each fitting and lay paper towel under it — Check after an hour with the machine idle; a wet towel names the fitting.
- Only after door, load and fittings are dry — Water appearing under the centre of the machine during the wash is a service call.
What an owner can safely check
- Dry everything, then run a cycle with no detergent — Watch the door and the floor and note the exact minute water appears.
Tools: towelsAbout 30 min
- Run a finger round the door gasket — Feel for hardening and tears; clear any trapped debris.
Tools: clothAbout 10 min
- Reload flat items along the sides — Keep trays and sheets out of the front rack, then re-test that same load.
About 10 min
- STOP HERE -- the next step needs the machine pulled out — Pump seals, tub seals and valve replacement are technician work.
Before you open anything
Safety
Switch the dishwasher off at its breaker or the switch under the sink before any panel comes off, and close the supply valve before touching a fitting.
When to call a technician
Filters, arms, hoses and detergent are yours; pumps, valves, boards and anything behind the kick panel are not.
Nearest pages of this class
What this page does not cover
This page covers the Janska dishwasher as a class, not one family or model line. Where a family- or model-specific page exists for your unit it is the more specific answer -- go there first if your model is named. Deliberately not here: gasket part numbers, fitting thread sizes, tub seal kits and the panel-removal order, 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.
