Medium
Err.4 on Atag Q 25S

Your boiler is displaying a historical record of an older issue, which means the current problem is likely linked to a fault that happened several times in the past.

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

4th last predecessing error

Engineer required

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

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Related fault codes

Err.1View →Err.2View →Err.3View →

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