BoilerFaultCodesTechnical description
Failure to light (could be gas supply issue).
What causes this fault?
This fault occurs when the boiler's control system attempts to start the combustion process but fails to detect a stable flame after several attempts. The most common reasons include a lack of gas reaching the burner, worn-out spark electrodes that can no longer ignite the gas, or a fault within the gas valve itself.
This issue is more frequent during extreme cold snaps, as external gas meters or regulators can sometimes freeze, restricting the flow of gas to the property.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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