BoilerFaultCodesWhat the manual says
Manufacturer manualFailure during start up – ignition unsuccessful to start
What causes this fault?
This fault occurs when the boiler tries to light the flame but fails to detect one after several attempts. The most common reasons are a lack of gas reaching the unit, worn-out spark components that can't create a flame, or a faulty internal valve that isn't releasing fuel correctly.
This fault is more common during extreme cold spells, as external gas meters or pipes can freeze and restrict the flow of fuel to the appliance.
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 F.28: no call-out fees, no surprise bills.
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