BoilerFaultCodesWhat the manual says
Manufacturer manualThe burner fails to ignite
What causes this fault?
This fault occurs when the boiler's control system attempts to light the burner but fails to detect a flame after several attempts. The most common reasons include a lack of gas reaching the unit, a worn-out ignition spark electrode, or a blockage within the burner system preventing the gas from catching light.
This fault is more common during extreme cold snaps, as external gas meters or pipes can sometimes freeze or experience pressure drops that prevent a consistent gas flow.
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 F1: no call-out fees, no surprise bills.
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