Medium
5.i on Chaffoteaux Celtic 2 24 Rsc

Your boiler is struggling to deliver hot water because the internal mechanism that detects water flow is sticking.

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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