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Washing machine

Washing machine not heating water? 3 likely causes

A failed heating element is the usual cause, though thermistors and control faults can mimic it.

Symptom: Clothes not clean, cold water, long cycles · Typical cost: £80–£170.

Always switch off and unplug the appliance before inspecting it. Never work on gas appliances or fixed electrical wiring yourself — call a Gas Safe registered engineer or a qualified electrician.

Likely causes, most common first

  1. 1

    Failed heating element

    DIY: moderate

    Limescale and age burn out the element.

    The fix:Test with a multimeter and replace.

  2. 2

    Faulty temperature sensor (NTC)

    DIY: moderate

    The sensor tells the board the water is the wrong temperature.

    The fix:Replace the NTC sensor.

  3. 3

    Control board fault

    Engineer job

    The board does not switch the heater on.

    The fix:Replace or repair the board.

When to call an engineer

  • Tripping the fuse box
  • Burning smell
  • Signs of water damage around the element
  • You are not comfortable working on the appliance, or the fix involves electrics or gas.

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Error codes linked to this fault

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Frequently asked questions

How much does it cost to fix a washing machine problem like this?

£80–£170.

Is it safe to keep using it?

If you can see leaks, smell burning, or the appliance is tripping the electrics, stop using it and unplug it. For minor faults without those signs it is usually safe to leave it off until you can diagnose it. Always switch off and unplug the appliance before inspecting it. Never work on gas appliances or fixed electrical wiring yourself — call a Gas Safe registered engineer or a qualified electrician.