Medium
Fig. 14 on Chaffoteaux Duo

Your boiler is struggling to provide a steady supply of hot water to your taps, usually due to a build-up of debris or internal blockage.

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

Deteriorating flow from taps

Engineer required

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

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