BoilerFaultCodesYour boiler has no power or the screen has failed, meaning it cannot provide heating or hot water until the electrical supply is restored.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical 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.
DIY fix possible
Check if other appliances are working to ensure there isn't a general power cut.Inspect your main consumer unit (fuse box) to see if a circuit breaker has tripped.Locate the boiler's fused spur (a wall switch with a fuse) and ensure it is switched on.Try replacing the 3-amp fuse in the boiler's wall switch/spur with a new one.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like BLANK DISPLAY — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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