BoilerFaultCodesWhat the manual says
Manufacturer manualThe appliance fails to ignite during the ignition sequence.
What causes this fault?
This fault occurs when the boiler attempts to start up but cannot successfully establish a flame to heat the water. The most common reasons include a lack of gas supply to the unit, a worn-out spark electrode that can no longer create a light, or a faulty gas valve that isn't opening correctly.
This issue can be more frequent during extreme cold spells if the external gas regulator freezes or if there is a blockage in the flue due to heavy snow or ice.
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.
Avoid the next call-out bill
A cover plan would handle faults like Reset Light (Ignition): no call-out fees, no surprise bills.
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