BoilerFaultCodesTechnical description
Ignition fault - No flame detection during ignition attempt
What causes this fault?
This fault occurs when the boiler tries to start up but cannot successfully light the gas or detect that a flame is present. The most common reasons include a worn-out ignition spark, a faulty gas valve that isn't opening properly, or an issue with the main control board failing to send the right signals.
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 →