BoilerFaultCodesWhat the manual says
Manufacturer manualIgnition failure
What causes this fault?
This fault occurs when the boiler's control system attempts to start the burner but fails to detect a stable flame after several attempts. The most common reasons include a lack of gas reaching the unit, a dirty ignition probe that cannot create a spark, or a component failure that prevents the gas valve from opening.
In extremely cold weather, this error can be triggered by a frozen gas meter regulator or ice blocking the external flue terminal, both of which prevent the boiler from lighting safely.
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 E01: no call-out fees, no surprise bills.
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