Your boiler has lost its electrical power supply and cannot turn on or heat your home.
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
What causes this fault?
This fault occurs when the boiler's internal computer system is no longer receiving the electricity it needs to operate. The most common reason is a blown fuse on the main circuit board or a failure of the external power switch supplying the unit. In some cases, an internal electrical short or a faulty control board is preventing the power from flowng through the system.
DIY fix possible
Check if other appliances in your home have power.Verify that the boiler's fused spur switch is turned on.Check your home's main consumer unit (fuse box) to see if a circuit breaker has tripped.
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 8-9 — no call-out fees, no surprises.
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Remeha Gas 350 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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