BoilerFaultCodesTechnical description
There is an internal fault in the Automatic Control Module.
What causes this fault?
This fault occurs when the boiler's main circuit board suffers a critical internal failure and can no longer process data correctly. The most common reason is electronic component fatigue or a power surge that has damaged the delicate circuitry inside the control module.
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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