Low
P x.x on Atag Q 25S

Your boiler is providing a live reading of the current water pressure in your heating system, which is a standard status display rather than a fault.

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.

What the manual says

Manufacturer manual

Water pressure in bar

From this model's manual
Verified against the Atag Q 25s 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

Check the pressure gauge on the front of the boiler display.Ensure the reading is between 1.0 and 1.5 bar while the heating is off.If the reading is outside this range, use the external filling loop to adjust the pressure.

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