L2 High
Your boiler has lost its flame while running or failed to light, meaning it has shut down for safety and won't provide heat or hot water.
Technical description: Flame loss
Typical repair cost: £100-350 (including labour)
DIY fix possible
Check that you have credit on your gas meter and that the external gas valve is open.If it is freezing outside, check if your white plastic condensate pipe is blocked with ice and thaw it with warm water.Hold the 'Reset' button for three seconds to restart the ignition sequence.
Protect yourself from future repair bills
A boiler cover plan would cover faults like L2 — no call-out fees, no surprises.
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Parts commonly replaced
- Flame sensing electrode
- Gas valve
- Spark generator
- Condensate trap
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