BoilerFaultCodesWhat the manual says
Manufacturer manualMain PCB fault
Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
What causes this fault?
This fault occurs when the boiler's central control board suffers an internal hardware failure or loses the ability to communicate with its sensors. The most common reason is age-related wear on the electronic components or a sudden electrical surge that has damaged the delicate circuitry.
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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Related fault codes
All 52 fault codes on the Flexicom hx
Seeing a different code? Every code this model can display, in one place.