High
119 on Atag S 25CR

Your boiler has detected that a small safety wire or bridge connection inside its control panel has come loose or is missing, preventing the system from starting.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Link on X2 position 4 and 5 missing

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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