Low
P.0 on Vaillant ecoTEC

Your boiler is currently running a brief automatic maintenance cycle to remove trapped air from its internal 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

Bleeding test program. The heating circuit and hot water circuit (combination boiler only) is bled via the automatic air vent

From this model's manual
Verified against the Vaillant Ecotec 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

Wait 5-10 minutes for the automatic program to completeMonitor the boiler display to see if it returns to the normal temperature readingDo not turn off or reset the boiler while this process is running

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