Low
312 on Main Eco Compact

Your boiler is currently running a self-cleaning process to remove trapped air from the system.

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 is taking place

From this model's manual
Verified against the Main Eco Compact installation & service manual, page 48.
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

Wait for the process to complete, which typically takes a few minutes.Do not turn off or reset the boiler while this message is displayed.Once the display returns to normal, check your radiators for trapped air and bleed them if they are cold at the top.

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