BoilerFaultCodesYour boiler has lost power or the screen has stopped working, meaning you cannot see the status of your heating and 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: Blank Display
What causes this fault?
This fault occurs when the communication link between the boiler's brain and its display screen is broken, or when the components have lost electrical power entirely. The most common reason is a technical failure within the display circuit board or a blown internal fuse caused by a sudden power surge. Without this connection, the boiler cannot receive commands or show you what it is doing.
DIY fix possible
Check if your home's main electrical consumer unit has a tripped circuit breakerEnsure the boiler's power switch or fused spur on the wall is turned onCheck if any other appliances in the house have lost power
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 4.16 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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