BoilerFaultCodesYour boiler is staying in a cooling-down mode because the pump is continuing to run after the heating has finished.
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: HTG pump run on
What causes this fault?
This status occurs when the boiler is waiting for its internal temperature to drop to a safe level after it has finished heating. It is usually caused by the internal pump continuing to push water through the system to dissipate excess heat, but if it persists, it may suggest that heat is not leaving the heat exchanger efficiently. This can be due to a slow-moving pump, a build-up of debris in the system, or a sensor that is inaccurately reading the water temperature.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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