BoilerFaultCodesYour boiler's electronic control board has developed a fault, meaning the internal computer can no longer safely operate the heating system.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Printed circuit board (PCB) error
What causes this fault?
This fault occurs when the boiler's internal computer chips or electrical paths fail due to age, heat stress, or a sudden power surge. The most common reason is that the delicate components on the circuit board have worn out over time, causing the system to lose its ability to communicate with the rest of the boiler safely.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
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