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Oven

Gas oven won't light? 2 likely causes

Gas faults must always be handled by a Gas Safe registered engineer.

Symptom: No flame when you turn the oven on · Typical cost: £90–£200.

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

    Dirty or faulty igniter

    Engineer job

    The spark is weak or missing.

    The fix:Gas Safe engineer to replace.

  2. 2

    Faulty thermocouple or flame supervision device

    Engineer job

    Gas won’t stay on.

    The fix:Replace the thermocouple.

When to call an engineer

  • If you smell gas, turn off, open windows and call the National Gas Emergency number 0800 111 999
  • You are not comfortable working on the appliance, or the fix involves electrics or gas.

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Frequently asked questions

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

£90–£200.

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.