BoilerFaultCodesYour boiler has lost power or has insufficient water pressure to operate, meaning it cannot 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: Fault with main supply, PCB fuse or low water pressure switch.
What causes this fault?
This fault occurs when the boiler's control system fails to detect either electrical power or sufficient water pressure to safely ignite. The most common reasons are a blown internal fuse on the circuit board or a leak in the system that has caused the pressure to drop below the minimum required level.
DIY fix possible
Check that the main power switch for the boiler is turned onCheck your home's fuse box / consumer unit for any tripped switchesIf your system has a pressure gauge, check if it is below 1.0 bar and top it up using the filling loop
Find a Gas Safe engineer
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Gas Safe Register →Protect yourself from future repair bills
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