The answer in three sentences
An AEG W washer holds water under mains pressure on the way in and pump pressure on the way out, and a leak from each behaves nothing like the other. The moment the water appears is the diagnosis. At fill it is the supply side, at drain it is the pump side, with the drum turning it is the door — and each of those is a different part and a different urgency. Only one model sits under this family key, so nothing below has to be qualified for a second configuration.
When the water appears
- Water appears as soon as the machine starts filling — The supply side, still under mains pressure, and the most urgent kind.
- Water only while it is draining — The pump, the filter housing or the drain hose, all at the front or the back rather than under the drum.
- Water at the door once the drum is turning — The seal, which on a front-loading machine is the part you can see and feel.
- A puddle that has appeared overnight — A weeping joint rather than a failure, and the kind that damages a floor before anyone notices.
- NEAR MISS — foam out of the drawer after a very full load — That is over-dosing rather than a leak, and no part has failed.
Causes, most likely first on the W family
- The door seal or the door glass — It is the only part of the water boundary that flexes on every cycle and takes the load hitting it, and a nick from a wire or a zip is enough to start a leak that only appears when the drum turns. That ordering needs no hedging on the W family, which spans a single configuration rather than a range of them.
- The inlet hoses and their fittings — These are the only parts under mains pressure day and night, so a failure here puts out far more water than anything else on the list, and old rubber hoses fail at the crimp.
- The pump filter housing and its seal — The filter cover is opened and closed by hand, and a cover that is cross-threaded or has grit on its face weeps every time the pump runs rather than continuously.
- The detergent drawer and its housing — Too much detergent, or a blocked drawer, sends water over the front of the housing rather than into the drum — a leak with no failed part anywhere in it.
Check in this order on these models, and why
- Pull the seal open all the way round and look inside its fold — First, because it is visible without tools and it catches the most common front-loading leak.
- Dry the fittings, then watch them through a fill with the machine pulled out — Second, and it is the check to do first if water appears the moment the taps are opened.
- Check the filter cover is seated square and its face is clean — Third, and it explains leaks that appear only at drain.
Models in the W family
Reference| Model number | Family key |
|---|---|
| W14120 | aeg:washer:w |
Isolate it first
Safety
Isolate the machine at its breaker, or draw the plug, before any panel is disturbed — a motor capacitor can hold stored charge well after the drum has come to rest. Shut both taps and let the drum empty through the pump filter before anything is unfastened, with cloths already down. Never reach for a plug while standing in water. The lid or door switch stays exactly as the factory wired it: it halts the drum whenever the machine is opened, and it is the one item on a washer nobody should work around. Anyone who feels a tingle from the cabinet or the taps should stop and leave the machine isolated.
When to call a technician
Call a technician when the seal, the hoses, the filter cover and the drawer are all proven and the leak continues, because the remaining sources are under the drum. Call immediately for any leak that keeps running with the machine switched off — that is a supply-side failure and the taps should be closed straight away. A slow leak reaching a floor void or a room below costs far more than the appliance repair ever will.
The rest of this family, fault by fault
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Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
