Low
105 on Atag A200

Your boiler has detected low water pressure and is now running a pre-programmed automatic cycle to clear any air bubbles from the pipes.

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

De-aeration program will start (if the pressure was below 0.7 bar). This will last for approx 7 mins.

From this model's manual
Verified against the Atag A200 System 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 is between 1.0 and 1.5 barIf pressure is low, top it up using the filling loopWait 7 to 10 minutes for the internal air-clearing program to finish automatically

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