Medium
5.iii on Chaffoteaux Celtic 24 HE

Your boiler is struggling to heat water correctly because a dirty filter is restricting the fresh water entering the unit.

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 - Inlet water filter blocked

Engineer required

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

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