Low
180 on Atag iR Regular

Your boiler is simply finishing its internal test mode and returning to normal operation, which is no cause for concern.

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.

What the manual says

Manufacturer manual

No error — briefly visible when leaving chimney sweep function

From this model's manual
Verified against the Atag/Atag Ir Regular installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

No action is required as this is a status message, not a faultWait a few moments for the code to disappear from the displayCheck that your heating and hot water are functioning as normal

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Avoid the next call-out bill

A cover plan would handle faults like 180: no call-out fees, no surprise bills.

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All 15 fault codes on the iR Regular

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

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