Low
P.06 on Vaillant ecoTEC exclusive

Your boiler is currently in a manual maintenance mode used for filling or draining the system, so it is temporarily turned off to allow this process.

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

Fillingmodecheckprogramme:Thedivertervalveismovedtothemid-position.Theburnerandpumpareswitchedoff(tofillordraintheproduct).

From this model's manual
Verified against the Vaillant Ecotec Exclusive installation & service manual, page 27.
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 if the filling loop tap is left open and close it firmly if soSwitch the boiler off at the mains for 60 secondsTurn the boiler back on to see if it exits the maintenance mode

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