BoilerFaultCodesTechnical description
Ignition fault: The boiler has attempted to light 5 times and failed.
What causes this fault?
This fault occurs when the boiler's internal computer signals for heat but the burner fails to sustain a flame after multiple attempts. The most common reasons include a lack of gas reaching the unit, a worn-out ignition spark plug, or a sensor that can no longer detect when the fire is lit.
This fault is more common during extreme cold snaps, as external gas meters or pipes can occasionally freeze and restrict 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.
Find a Gas Safe engineer
Search the official register →