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E4

Haier E4 on a washing machine: water level not reached in time

Verified with sources2 sourcesReviewed Oct 3, 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 a Haier washing machine, E4 means no water comes in or the level is not reached in the set time, at most 12 minutes. Open the tap fully, check the pressure and check the drain hose is not self syphoning.

Safety first

Stop and check this first

  • Close the tap and unplug the washer before removing the inlet hose: there is pressurised water next to an electrical appliance.

Safe checks you can perform

  • Tap and water pressure
  • Drain hose installation
  • Inlet valve filter

Leave these tasks to a qualified professional

  • Do not attempt this professional task: Inlet valve and level check
  • Do not attempt this professional task: Filling test

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. Inlet valve and level check

    What they doWith the washer disconnected, the technician measures the inlet valve with a multimeter and checks the system that detects the water level.

    They must show youthe measured valve value against the Haier specification.

    In writingparts checked, result, any replaced part with reference and why.

  2. Filling test

    What they doThe technician runs a programme and checks the washer reaches its water level in normal time and without E4.

    They must show youa complete fill with no code.

    In writingprogramme, result and 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. Tap and water pressure

    No special tools

    Who:
    you, no tools.
    How:
    open the washer tap fully and check whether other taps in the house have normal pressure, as Haier asks.
    Result that matters:
    tap fully open and normal pressure.
    If the tap was half open:
    open it and resume the programme.
    If pressure is low across the house:
    wait for normal pressure before using it, as Haier says.
    Evidence to keep:
    note the time and the pressure situation.

    Evidence: Haier washing machine error codes E2, E4, E8, F3, F4, F7, FC0, FC1, FC2, UNB, FA · Haier washing machine display error code E4

  2. Drain hose installation

    No special tools

    Who:
    you.
    How:
    check how the drain hose is placed and listen for water leaving through the drain while the washer fills.
    Result that matters:
    no water leaving through the drain during filling.
    If water leaves while filling:
    the hose is self syphoning; have an installer correct it.
    If no water leaves:
    check the inlet valve.
    Evidence to keep:
    a photo of the hose and its drain point.

    Evidence: Haier washing machine error codes E2, E4, E8, F3, F4, F7, FC0, FC1, FC2, UNB, FA

  3. Inlet valve filter

    No special tools

    Who:
    you, with the tap closed and the washer unplugged.
    How:
    remove the inlet hose and clean the water inlet filter, as Haier says; on top loading models Haier then asks you to open and close the lid and press START/PAUSE.
    Result that matters:
    a clean filter and normal filling.
    If it was dirty and it now fills without E4:
    that was the cause.
    If it was clean and E4 stays:
    contact the Haier service.
    Evidence to keep:
    a photo of the filter before and after.

    Evidence: Haier washing machine display error code E4

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
Haier
Product type
Washing machines

Known code variants

  • Bosch E4
  • calentador Junkers E4
  • Daitsu E4
  • E04
  • E 4
  • E401
  • E402
  • E403
  • E421
  • E422
  • E423
  • E431
  • E432
  • E433
  • Electrolux cooker E4
  • Electrolux hob E4
  • Electrolux hob E401 overheating
  • Electrolux induction hob error E4
  • Electrolux placa E4
  • error E4 lavadora Haier
  • error E4 lavavajillas Fagor
  • error E4 placa inducción Electrolux
  • Fagor 3LVF-623.1 E4
  • Fagor dishwasher E4
  • Fagor dishwasher error E4
  • Fagor dishwasher overflow E4
  • Fagor lavavajillas E4
  • Haier E4 error washer
  • Haier E4 lavadora
  • Haier washer E4 not filling
  • Haier washing machine E4
  • Hydronext 5600S E4
  • Hydronext 5700S E4
  • Junkers E4
  • lavadora Haier E4 no coge agua
  • lavavajillas Fagor rebose E4
  • Mitsubishi E4
  • Mitsubishi Electric E4
  • Mr. Slim E4
  • PKA E4
  • placa Electrolux E401 sobrecalentamiento
  • vitro Electrolux E4

What it means

Haier explains that E4 appears when no water comes in or the level is not reached in the prescribed time; one of its pages sets it at 12 minutes at the latest. The causes it lists are a tap not fully open, low pressure, a dirty inlet valve and a self syphoning drain hose that empties water while the washer fills. The code does not prove the valve or any other part has failed.

Warnings and stop conditions

  • Mediumeditorial warning

    Close the tap and unplug the washer before removing the inlet hose: there is pressurised water next to an electrical appliance.

    Evidence: Haier washing machine display error code E4

Symptoms and causes

Probable causes · in order

  • Tap not fully open or low pressureCommon

    Haier lists it first; you can tell because the tap is half open or pressure is low across the house.

    Evidence: Haier washing machine error codes E2, E4, E8, F3, F4, F7, FC0, FC1, FC2, UNB, FA · Haier washing machine display error code E4

  • Self syphoning drain hosePossible

    Haier names it when the drain installation empties water while the washer fills; it stands out because you hear water leaving through the drain during filling.

    Evidence: Haier washing machine error codes E2, E4, E8, F3, F4, F7, FC0, FC1, FC2, UNB, FA

  • Dirty inlet valvePossible

    Haier asks you to clean it; it stands out if water enters weakly with tap and pressure correct.

    Evidence: Haier washing machine display error code E4

Virtual technician

Does E4 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: Haier washing machine error codes E2, E4, E8, F3, F4, F7, FC0, FC1, FC2, UNB, FA · Haier washing machine display error code E4reviewed 2026-10-03 · verified

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