BoilerFaultCodesTechnical description
The burner control unit is faulty
What causes this fault?
This fault occurs when the internal electronic processor responsible for managing the gas burner fails a critical self-test. The most common reason is age-related wear or a component failure on the control board, which prevents the boiler from safely confirming that a flame is present or that the gas valve is operating correctly.
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.
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