BoilerFaultCodesThis is a technical setting that controls how fast your boiler's internal pump circulates water throughout your heating system.
This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.
Technical description: Diagnostics code: Setting the pump output
What causes this fault?
This isn't a mechanical failure, but rather a configuration setting that has been accessed or adjusted within the boiler's menu. It happens when an engineer or user enters the diagnostic mode to change the speed at which the pump moves hot water around your radiators. It is used to balance the system's efficiency and noise levels rather than to report a broken part.
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 D.014 — no call-out fees, no surprises.
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