BoilerFaultCodes.com
8-9 High

Your boiler is not receiving any electricity, which means the unit is completely shut down and cannot provide any heating or hot water.

Call an engineer soon

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 supply
Typical repair cost £120-250 (including labour)

DIY fix possible

Check your home's fuse box or consumer unit to see if a trip switch has been triggered.Verify that the fused spur switch connected to the boiler is turned on.Check the fuse inside the boiler's fused spur and replace it if it has blown.

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

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Protect yourself from future repair bills

A boiler cover plan would cover faults like 8-9 — no call-out fees, no surprises.

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