In short
On the Ariston ARWDF washer line, water that will not drain is worth working through in a set order: a drain hose that is kinked, too high, or pushed too far into the standpipe first, then a lid switch or door lock blocking the drain and spin step, and only after those does the work that needs a meter or a teardown enter the picture. That order is written for a one-cabinet line and sequenced for how these models are put together, which is where it departs from the brand-generic article.
What an owner actually sees
- The problem started right after the machine was moved — A hose crushed against a wall is the classic post-move drainage fault.
- The wash finishes but the machine never drains or spins — A cycle that stops exactly at the drain and spin step points at the interlock.
- NEAR MISS — water is on the floor rather than in the drum — That is a leak and it has its own page; deal with the water before the drainage.
Causes in the order they are worth suspecting on the ARWDF line
- The drain hose is kinked, too high, or pushed too far into the standpipe — First on this list: a drain hose crushed behind the machine after it was pushed back, or one shoved so far down a standpipe that it siphons, stops drainage without anything inside the machine being wrong at all — and it is the fault most often created by moving the machine.
- The lid switch or door lock is preventing the drain and spin step — An unconfirmed lid or door leaves the machine unable to run its drain and spin step, which reads as a drainage fault.
- The pump filter or coin trap is blocked — The pump filter is where drainage faults start, and opening it needs nothing but towels and a tray.
- The pump impeller is jammed or the pump housing is blocked — The impeller is the answer when the filter is clean, the hose is clear and the pump is still audibly straining.
- The drain pump motor or its control — Last here, and the only cause on this list that is not owner work — a pump that is silent at the drain step, with a clean filter and a free impeller, has lost its motor or its supply — and that is diagnosed with a meter on live terminals.
What to check first, second and third
- Pull the machine out and follow the drain hose along its whole run — Look for crushing, kinks, and how far the end sits inside the standpipe. Done first because it separates the likeliest causes before any tool is needed.
- Close the lid or door firmly and listen for the lock or switch — Second: it confirms or dismisses what the first check suggested.
- Open the pump filter and look at what comes out — Third, once the two checks above are clean.
Before you start work
Safety
Unplug the appliance or switch off its breaker before opening the pump filter — a capacitor can hold a charge after the power is off, and the filter housing sits close to the electrics. Expect a lot of water: a full drum empties through that filter, so work with a shallow tray and towels and unscrew slowly. Never force a locked door on a full drum.
Models in the ARWDF family
Reference| Model number | Family key |
|---|---|
| ARWDF129(NA).1 | ariston:washer:arwdf |
| ARWDF129S(NA).1 | ariston:washer:arwdf |
Where owner work ends
Call at once if the machine trips the breaker when it tries to drain, because that is no longer a blockage question. Otherwise this is a normal appointment.
Other pages like this one
Where to go next
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
