Medium
67 on Atag Q 25CR

Your boiler has detected an unusual temperature difference between its internal pipes while it is turned off, which may indicate a sensor error or a flow problem.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

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.

Shared across the Q 25CR range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

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

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Related fault codes

68View →69View →

All 53 fault codes on the Q 25CR

Seeing a different code? Every code this model can display, in one place.

0001020405101112181920284050606980818285A0A1A4A5A9Block 01Block 11Block 12Block 60Block 67Block 80Block 81Block 82Block 85COdEError 00Error 01Error 02Error 04Error 05Error 12Error 18Error 19Error 28Error 69Error 80FILLGoodHIGHP x.xStBYSTOP

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