BoilerFaultCodesYour boiler is struggling to pump water efficiently because the flow is being restricted, causing it to make loud noises.
This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.
Technical description: Boiler noisy - Isolating valves not fully open
DIY fix possible
Locate the pipes connected to the bottom of the boiler.Identify the isolating valves (often small levers or slotted screws) on the pipes.Ensure all valves are turned fully to the 'open' position (lever parallel to the pipe or slot aligned with the pipe).
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A boiler cover plan would cover faults like 7 — no call-out fees, no surprises.
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