BoilerFaultCodesTechnical description
The pilot will attempt to light, if the pilot does not light within 60 seconds (due to air in the system) the boiler controls will go to 'Lockout' and the LED on the user controls will go Red.
What causes this fault?
This fault occurs when the boiler's internal safety system detects that the small pilot flame hasn't lit correctly. The most common reasons are a build-up of debris on the ignition part or air trapped in the gas supply, which prevents the spark from catching. If the boiler cannot confirm a healthy flame within 60 seconds, it shuts down to prevent unburnt gas from escaping.
This issue is more frequent during the autumn when a boiler is turned back on after months of inactivity, as air or debris can settle in the pilot assembly during the summer.
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.