Medium
5.i on Chaffoteaux Celtic 24 HE

Your boiler is struggling to control the temperature of your hot water because an internal valve is sticking and not moving correctly.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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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

Hot water does not operate over temperature range - Water governor sticking

Engineer required

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

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