BoilerFaultCodesYour boiler has no power and the screen or lights are completely dark, meaning it cannot start up to provide heating or hot water.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Lamp OFF.
What causes this fault?
This fault occurs when the boiler's electrical brain fails to receive or process power, often due to a component failure on the control board or a blown internal fuse. The most common reason is an electrical surge or some of the older internal wiring wearing down, which physically breaks the circuit required for the boiler to turn on.
This issue can be more common during the autumn and winter months when the boiler is suddenly pushed into heavy use after being idle all summer, or following stormy weather that causes power surges.
DIY fix possible
Check if the boiler's power switch or fused spur on the wall is turned on.Inspect your home's main fuse box to see if the heating circuit has tripped.Check if other appliances in the house have power to rule out a general power cut.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like Lack of power supply or faulty electronic control p.c.b. — no call-out fees, no surprises.
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Ideal Mini HE is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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