Alpha No Power / Dead Boiler

Boiler display is blank and the unit appears completely dead.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Blown fuse in fused spur, Tripped circuit breaker, Loose mains connection, Failed main PCB power supply

How to Fix / Troubleshooting

Safety: Electrical work should be done by a competent person. Always isolate before opening covers.

  • Check fused spur: Ensure the boiler's switch is on and the fuse (usually 3A) is intact. Replace the fuse if blown, but investigate the cause if it blows again.
  • Check consumer unit: Verify that the circuit breaker feeding the boiler has not tripped.
  • Test socket (if applicable): Plug another appliance into the same outlet to confirm power is present.
  • Internal checks (qualified person): An engineer can verify mains voltage at the boiler terminals and inspect the PCB for power supply failure.
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Repair Difficulty

Medium 3/5

Required Part

Main Control PCB
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