Low
P.00 on Vaillant ecoFIT Pure 412

Your boiler is currently running a self-cleaning routine 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

Purging check programme: The internal pump is cyclically actuated.

From this model's manual
Verified against the Vaillant Ecofit Pure 412 installation & service manual, page 15.
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 5-10 minutes for the cycle to complete automatically.Do not switch the power off while this code is displayed.Check your system pressure once the display returns to normal.

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