No light High
Your boiler appears to have no electrical power at all, meaning the screen and lights are completely blank and it will not provide any heating or hot water.
Technical description: No power at control board
Typical repair cost: £100-350 (including labour)
DIY fix possible
Check if your home's main electrical consumer unit (fuse box) has tripped a circuit.Locate the boiler's fused spur (a wall switch near the boiler) and ensure it is switched on.Check the fuse inside the wall-mounted spur switch and replace it with a 3-amp fuse if necessary.
Protect yourself from future repair bills
A boiler cover plan would cover faults like No light — no call-out fees, no surprises.
*Affiliate links — we may earn a commission at no extra cost to you. Prices shown are starting prices.
Parts commonly replaced
- Internal PCB fuse
- Printed Circuit Board (PCB)
- Transformer
*Affiliate links — we may earn a commission at no extra cost to you.