F2 High
Your boiler has lost its flame signal during operation, meaning and it can no longer safely heat your water or radiators.
Technical description: Flame loss
Typical repair cost: £100-£350 (including labour)
DIY fix possible
Check that your gas emergency control valve is in the 'on' position and you have credit on your gas meter.Inspect the outdoor condensate pipe for signs of freezing or blockages if the weather is very cold.Press the Reset button for two seconds to see if the system reignites.
Protect yourself from future repair bills
A boiler cover plan would cover faults like F2 — no call-out fees, no surprises.
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Parts commonly replaced
- Flame sensing electrode
- Gas valve
- Ignition lead
- Spark generator
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