BoilerFaultCodesYour boiler has detected a problem with the internal sensor that tells it when to provide hot water, meaning you currently have no hot water when you turn your taps on.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Flowswitch assembly failure or microswitch/wiring fault in hot water mode.
What causes this fault?
This fault occurs when a small internal part called a flowswitch fails to move or signal the boiler when you turn on a hot tap. Over time, the internal mechanical components can become stuck or the electrical switch attached to it can wear out, preventing the boiler from knowing it needs to fire up for hot water. In some cases, it may also be caused by a loose connection or a fault in the wiring that carries this signal to the main control board.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like FAIL POINT E — no call-out fees, no surprises.
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