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E12

Beko E12 on a washing machine: water may be inside the machine

Verified with sources2 sourcesReviewed Oct 4, 2026
Technician coming? See the 2 steps they must show you
Front-loading washing machine
Dany kgPublic domainImage source

Risk level

Medium

Proceed carefully and stop if the check is unclear.

Urgency

Medium

Quick answer

On Beko washers such as the BM1WU3741W and BM1WU3721W, E12 means there may be water inside the machine. Unplug it, clean up any water underneath, plug it back in and try a short cycle. If it persists or a hose is leaking, close the valves and call the service.

Safety first

Stop and check this first

  • Water and electricity: unplug the machine before drying the floor and never touch the plug with wet hands. Do not open the machine; the inside is a job for the service engineer.
  • This code table is for the Beko BM1WU3741W and BM1WU3721W; on other Beko models the same code may mean something else, so check your model's manual.

Safe checks you can perform

  • Unplug and dry the water underneath
  • Check the inlet and drain hoses
  • Clean the pump filter and check the drain
  • Run a short cycle and watch the floor

Leave these tasks to a qualified professional

  • Do not attempt this professional task: Finding where the water comes from
  • Do not attempt this professional task: Test cycle and failure list check

What a technician must be able to justify

Technician visit

These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.

These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.

  1. Finding where the water comes from

    What they doThe Beko engineer checks the machine to locate where the water comes from: hoses, connections, filter or internal components, and repairs it.

    They must show youthe exact leak point and the part or connection involved.

    In writingthe cause found, the part replaced with its reference and the reason.

  2. Test cycle and failure list check

    What they doAfter the repair, the engineer runs a cycle while watching the machine and reads the failure list with auxiliary function buttons 1 and 2 to show there is no new E12.

    They must show youthe cycle finished with a dry floor and the failure list with no new E12.

    In writingthe test done, the programme used, the result and the date.

Before accepting a part or repair

Nothing has been shown yet. Do not accept a part swap based on the code alone.

Follow these steps

Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.

  1. Unplug and dry the water underneath

    No special tools

    Who:
    you.
    How:
    unplug the machine first, without touching the plug with wet hands or feet. Clean up the water under and around the machine, as Beko says, and note which side it seems to come from.
    Result that matters:
    a dry area so you can see whether water comes out again.
    If there was water:
    note where it was and check the hoses before testing.
    If there was no visible water:
    plug it back in and try a short cycle.
    Evidence to keep:
    photos of the water under the machine and the side it came from.

    Evidence: Beko Washing Machine User Manual BM1WU3741W · Beko Washing Machine User Manual BM1WU3721W

  2. Check the inlet and drain hoses

    No special tools

    Who:
    you, with the machine unplugged.
    How:
    look at where the inlet hose joins the tap and the machine, and along the drain hose. Beko says not to use old hoses on a new machine, to check for leaks at the connection points when opening the taps and, if one drips, to turn off the tap, check the gasket and carefully tighten the nut again. A drain extension must be secured with a clamp.
    Result that matters:
    ruling out a loose connection or damaged hose that is leaking.
    If a hose drips or is damaged:
    close the valves and call the service, as Beko says.
    If the hoses are dry and secure:
    clean the pump filter.
    Evidence to keep:
    photos of each connection and of the gasket if you checked it.

    Evidence: Beko Washing Machine User Manual BM1WU3741W · Beko Washing Machine User Manual BM1WU3721W

  3. Clean the pump filter and check the drain

    No special tools

    Who:
    you, with the machine unplugged and the water cooled.
    How:
    make sure the drain hose is not kinked or blocked. Then follow the manual's section on draining remaining water and cleaning the pump filter: open the cover, collect the water in a container with a cloth ready, remove any residue and refit the filter firmly closed.
    Result that matters:
    a clear drain and a properly closed filter that does not drip.
    If there was residue or the filter was not seated:
    correct it and try a short cycle.
    If the filter was clean and well fitted:
    go on to the short cycle test.
    Evidence to keep:
    photo of the filter and what came out.

    Evidence: Beko Washing Machine User Manual BM1WU3741W

  4. Run a short cycle and watch the floor

    No special tools

    Who:
    you.
    How:
    plug the machine back in and run a short cycle, as Beko suggests. Stay close and watch the floor and the hoses during filling, washing and draining.
    Result that matters:
    knowing whether water comes out again and at what point in the cycle.
    If it finishes with a dry floor:
    keep an eye on the next washes in case it returns.
    If water appears again or the issue persists:
    close the valves, unplug and call the Beko service.
    Evidence to keep:
    programme used, when the water appeared and photos.

    Evidence: Beko Washing Machine User Manual BM1WU3741W · Beko Washing Machine User Manual BM1WU3721W

Still not solved

If the error persists, stop here. See what the technician must do and show you.

Where this code applies

A code is meaningful only inside the right product and version context.

Primary scope

System
Appliances
Brand
Beko
Product type
Washing machines

Known code variants

  • Beko BM1WU E12 code
  • Beko E12 agua debajo de la lavadora
  • Beko E12 water under machine
  • Beko lavadora E12
  • Beko washer E12
  • Beko washing machine E12 water inside
  • código E12 Beko BM1WU
  • E 12
  • E-12
  • E12
  • E:12
  • error E12 lavadora Teka
  • lavadora Beko E12 agua dentro
  • lavadora Teka demasiada agua E12
  • lavadora Teka sobrenivel
  • Teka lavadora E12
  • Teka TKD E12
  • Teka washer error E12
  • Teka washer over-level
  • Teka washer too much water E12
  • Teka washing machine E12

What it means

In Beko's manuals for the BM1WU3741W and BM1WU3721W, E12 is in the failure list you read with the machine off by holding auxiliary function buttons 1 and 2: after a 3-2-1 countdown and the total number of washes, any stored failure codes appear. Beko explains it as there may be water inside the machine and says to unplug, clean the water under the machine, plug it back in and try a short cycle. If the issue persists or a hose is leaking, close the valves and call the service. The code does not prove which part is faulty.

Warnings and stop conditions

  • Mediumeditorial warning

    Water and electricity: unplug the machine before drying the floor and never touch the plug with wet hands. Do not open the machine; the inside is a job for the service engineer.

    Evidence: Beko Washing Machine User Manual BM1WU3741W

  • Loweditorial warning

    This code table is for the Beko BM1WU3741W and BM1WU3721W; on other Beko models the same code may mean something else, so check your model's manual.

    Evidence: Beko Washing Machine User Manual BM1WU3741W · Beko Washing Machine User Manual BM1WU3721W

Symptoms and causes

Probable causes · in order

  • Water under the machineCommon

    Beko's E12 solution starts with cleaning any water under the machine while it is unplugged, then trying a short cycle.

    Evidence: Beko Washing Machine User Manual BM1WU3741W · Beko Washing Machine User Manual BM1WU3721W

  • Water leaking from a hosePossible

    Beko specifically mentions water leaking from one of the hoses; in that case it says to close the valves and call the service.

    Evidence: Beko Washing Machine User Manual BM1WU3741W · Beko Washing Machine User Manual BM1WU3721W

  • Blocked drain or kinked hosePossible

    In the troubleshooting table, water leaking from the bottom of the product is linked to a clogged or twisted drain hose or a clogged pump filter.

    Evidence: Beko Washing Machine User Manual BM1WU3741W

  • Internal leak that needs checkingPossible

    If the issue persists after drying and a short cycle, Beko says to call the service so they can find where the water comes from inside the appliance.

    Evidence: Beko Washing Machine User Manual BM1WU3741W · Beko Washing Machine User Manual BM1WU3721W

Virtual technician

Does E12 still appear after these checks?

Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.

Sources and technical references

Sources: Beko Washing Machine User Manual BM1WU3741W · Beko Washing Machine User Manual BM1WU3721Wreviewed 2026-10-04 · verified

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