BoilerFaultCodesTechnical description
Blank Display
What causes this fault?
This fault occurs when the boiler's internal computer is not receiving electricity or has suffered a hardware failure. The most common reason is a blown fuse on the control board or a tripped circuit breaker, though it can also be caused by a complete failure of the Printed Circuit Board (PCB) itself. Without a functional display, the boiler is unable to process any commands to provide heat or hot water.
This issue often occurs after summer periods when a power surge during a storm or a damp environment has affected the electronics before the first cold snap.
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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