Medium
169-141 on Ideal Mini S18

There is a small physical seal inside your boiler that has likely failed, causing a internal water drip.

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

1/2” flat gasket

Engineer required

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

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