BoilerFaultCodesYour boiler's main control board has suffered a communication failure or internal electrical fault, meaning it can no longer send instructions to heat your home.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Main PCB fault
What causes this fault?
This fault occurs when the boiler's internal computer, the PCB, loses its ability to communicate with the gas valve and other vital components. The most common reason is an electrical short-circuit or a component failure on the board itself, preventing it from safely controlling the ignition sequence. Think of it as the brain of the boiler losing its connection to the rest of the system.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like F61 — no call-out fees, no surprises.
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Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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