BoilerFaultCodesTechnical description
The ignition device has been activated for too long
What causes this fault?
This fault occurs when the boiler attempts to start up but cannot confirm that a stable flame has been established within the required safety timeframe. It is usually caused by worn-out spark electrodes that can no longer ignite the gas or a dirty sensor that fails to detect the heat once the burner is lit. Occasionally, an issue with the gas supply or a faulty internal valve prevents the fuel from reaching the burner correctly.
This fault is frequently seen during the first cold snap of autumn when a boiler that has been idle all summer is suddenly forced to work at high capacity.
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.