Low
Block 67 on Atag E22c

Your boiler has detected an unusual temperature difference between internal parts while it is idle and is temporarily pausing to prevent any potential damage.

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

A (cid:39)T has been detected between flow and return sensor whereas the burner is not in operation. After the (cid:39)T has disappeared the block will disappear.

Engineer required

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

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