Low
181 on Atag S 25CR

Your boiler has successfully completed an automated diagnostic or calibration check and is simply returning to its normal operating state.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

End of measuring procedure

Engineer required

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

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