Medium
E54 on Baxi 400 Combi (range)

Your boiler is having trouble detecting when you turn on your taps, which means it might not provide hot water when you need it.

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

Domestic hot water (DHW) flow sensor fault

Engineer required

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

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Related fault codes

E50View →

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