BoilerFaultCodesYour boiler has no power and appears completely dead, which is usually caused by an electrical supply issue or a blown fuse.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: No power, blown fuse, Internal fault. Ensure power supply to Boiler is on, check fuse, Contact engineer
What causes this fault?
This fault occurs when the boiler's electrical circuit is broken, preventing the control system from turning on. The most common reason is a blown 3A fuse in the wall spur or on the internal board, often triggered by a power surge or a failing internal component causing short circuit.
DIY fix possible
Check if the main boiler power switch (fused spur) is turned onCheck your home's main consumer unit to see if a circuit breaker has trippedTry replacing the 3-amp fuse in the boiler's external switch
Find a Gas Safe engineer
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