Medium Warning
C7 on Remeha Avanta Plus 35c

Your boiler is continuing to run its internal pump after you have finished using hot water, which is often caused by a stuck internal valve or a sensor error.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

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 pump is running after heating DHW

What causes this fault?

This fault occurs when the boiler's internal computer thinks the hot water is still being heated even after you have turned the tap off. The most common reason is a mechanical failure in the diverter valve, which gets stuck and falsely signals that water is still flowing through the system. This causes the pump to keep running as a safety measure to dissipate heat that isn't actually needed.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

E7View →C1View →C4View →

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