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Zanussi E40 on a washer dryer

Door open or not locked.

The same code appears on AEG and Electrolux machines — they share the same control platform.

Verdict

You can fix this yourself

No special tools or qualifications needed

Urgency
Not urgent

About 55 min to work through

Typical cost

Free to £130

DIY: Up to £40 in parts

What E40 actually means

The machine cannot confirm the door is secured, so it will not start. E41 on some models means specifically that the door was left open. As always, check for laundry in the seal before assuming the interlock has failed.

What causes it, most likely first

  1. Laundry caught in the seal

    Most likely

    A trapped corner of fabric holds the door fractionally proud so the latch misses.

    How to check: Open the door and run a hand right round the seal.

  2. Door not closed firmly

    Common

    The door needs a positive push until it clicks.

  3. Worn catch or dropped hinge

    Common

    The hook wears or the door sags so it no longer enters the lock squarely.

  4. Failed door interlock

    Occasional

    The lock latches mechanically but its contacts no longer signal the board.

    Door interlock£15–£40 for the partDIY with care

How to fix it, step by step

  1. Clear the seal and close firmly

    Run a hand round the whole seal, remove anything caught, and push the door until it clicks.

    2 min

  2. Power-cycle

    Switch off at the wall for a full minute, then restore power.

    3 min

  3. Inspect the catch and hinge

    Check the hook for wear and cracks, and watch whether the door drops as it swings.

    5 minTorch

  4. Replace the interlock if it persists

    A cheap part behind the door seal retaining band — a short engineer visit if you would rather not open the machine.

    45 min

Need an engineer for this E40?

We list 4 washer dryer repair businesses across the UK, 3 of which are Zanussi-authorised. Diagnostic callouts typically start around £55, and many will put that towards the repair if you go ahead.

Find washer dryer engineers near you

Parts you might need

Typical UK prices for the part alone, before fitting. Worth knowing before you accept a quote — the part is often a small share of what a repair is priced at.

  • Door interlock

    The electrically operated latch that proves the door is shut before the machine will fill, and holds it shut until the drum stops.

    £15–£40

Related problems

Other Zanussi washer dryers codes

All Zanussi washer dryers fault codes