How much does it cost to fix Atag error code 181?

Cost varies. Contact a Gas Safe registered engineer for a quote.

181 Low

Atag 181 Fault Code

Q: What does the Atag 181 fault code mean?

This is a normal message showing that your boiler has successfully finished its setup or maintenance checks and is returning to normal operation.

The Atag 181 fault code means: this is a normal message showing that your boiler has successfully finished its setup or maintenance checks and is returning to normal operation.. It appears on 4 Atag models in our database.

Technical description: No error: shortly visible when leaving commissioning mode

DIY fix possible

No action is requiredWait a few seconds for the code to disappearConfirm the boiler returns to its standard temperature display

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Atag models that show the 181 fault code

Click a model for the full fault code list and model-specific repair notes.

A200
Q 25CR
S 25CR
Sov.

Source

Atag 181 fault code information on this page is sourced and cross-checked against the official Atag service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026