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Beko Washing Machine Error Code H4

Call a professionalReviewed November 2026Checked against manufacturer documentation
What this code means
H4: Inlet valve triac short circuit (service test code)

H codes are read in the service test mode, not during a normal wash. H4 says the triac driving the water inlet valve has failed, so the valve can stay open or fail its checks and the machine may overfill.

Applies to: Beko washing machines and washer-dryers with a display, older WMA to WMG era models; the code is read in the service test mode, not during a normal wash

Fix level
Call a professional
The checks on this page are preliminary. The likely fix involves a part, wiring or the control board.
Time to run the checks
About 15–30 minutes
For the 3 checks on this page — not a full repair.
You may need
No special tools
The checks below use basic household items only.
Parts that may be involved
Control board, Water inlet valve
Parts are model-specific; see the note below before ordering.

Common causes

  1. Inlet valve triac on the control board shorted
  2. Damaged valve wiring
  3. Control board failure

What to check, in order

Safety first. Switch the machine off and unplug it before cleaning filters or moving hoses. Expect water to come out when you open a pump filter; keep a tray and towel ready. If you are not comfortable with any step, stop and call a technician.
  1. Turn off the water tap if the machine fills when it should not.
  2. Test the inlet valve solenoid first to rule out a simple valve fault.
  3. Triac and board faults are a technician job.

Clear the code and test

  1. Fix what the checks above found first — a filter cleaned, a hose straightened, taps opened. Clearing the code without fixing the cause only brings it back.
  2. Close the door, plug the machine back in and restore the water supply.
  3. Run a short rinse and spin, or the shortest wash programme, and watch the stage where the code appeared before (filling, washing, draining or spinning).
  4. If the cycle finishes with no code, the fault is cleared. If the code returns at the same stage, write down the code and that stage before calling a technician — it speeds up the diagnosis.

When to call a professional

This code usually points to a faulty part, wiring or the control board on a Beko washing machine. Run the checks above to rule out the simple causes, then book a technician — and book one straight away if any of these apply:

  • The code comes back after you have run the checks and a test cycle.
  • You smell burning, see sparks or scorch marks, or the breaker trips.
  • Water is leaking and you cannot stop it.
  • The fix needs panels opened beyond what your manual describes, or a part tested with a meter, and you are not set up for that.

When you call, give the brand, the code H4, your model number (on a label inside the door or on the back) and the checks you already ran. It shortens the visit.

Repair or replace?

This fault is in professional territory: the fix usually means a major part or board-level work, and the labour adds up. If your machine is already well into its service life, get the repair quote first, then compare it with the price of a current equivalent model before you decide. Paying a large share of a new machine's price to repair an old one is rarely the better deal; replacing a machine over one cheap fault is wasteful too.

Parts that may be involved

Control boardWater inlet valve

Parts are model-specific. Find your model number first — usually on a label inside the door or on the back — and match the part to that number before ordering.

Questions people ask about H4

What does H4 mean on a Beko washing machine?

H4 means: Inlet valve triac short circuit (service test code). H codes are read in the service test mode, not during a normal wash. H4 says the triac driving the water inlet valve has failed, so the valve can stay open or fail its checks and the machine may overfill.

Can I fix Beko H4 myself?

Only the preliminary checks. Code H4 usually means a part, wiring or the control board has failed, which is a technician job. Run the checks to rule out simple causes before you book.

How do I clear Beko H4?

Fix what the checks above found first — a filter cleaned, a hose straightened, taps opened. Clearing the code without fixing the cause only brings it back. Close the door, plug the machine back in and restore the water supply. Run a short rinse and spin, or the shortest wash programme, and watch the stage where the code appeared before (filling, washing, draining or spinning).

Sources checked

The meaning and checks for this code were checked against the sources above in November 2026. Codes vary by model and region; if your manual lists a different meaning for your exact model, follow the manual.

Other Beko washing machine codes

Beko E01Door lock fault — the machine cannot confirm the door is closed and lockedBeko E02Heating fault — the water is not reaching the set temperatureBeko E03Drain fault — the machine cannot empty the water in the allowed timeBeko E04Fill fault — the machine is not filling with water in the allowed timeBeko E05Pressure switch fault — the water level sensor is reading incorrectlyBeko E06NTC thermistor fault — the temperature sensor is not reading correctlyBeko E07Motor circuit fault — the motor or its control triac has failedBeko E08Motor tachometer fault — the control board cannot read the drum speedBeko E13Water leak detected — the anti-flood system has found water in the baseBeko H1NTC thermistor open or short circuit (service test code)Beko H11Motor or tachogenerator open circuit (service test code)Beko H2Heater open circuit (service test code)Beko H3Heater stuck on — heater triac or relay shorted (service test code)Beko H5Drain pump open circuit (service test code)Beko H6Motor triac short circuit (service test code)Beko H7Pressure sensor failure (service test code)Beko H8Tachometer fault — motor speed sensor (service test code)

See all Beko washing machine error codes