Low
P.06 on Vaillant ecoTEC exclusive Combi

Your boiler is currently in a manual setup mode used for filling the system with water, rather than a standard heating mode.

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

Filling mode check programme: The diverter valve is moved to the mid-position. The burner and pump are switched off (to fill or drain the product).

From this model's manual
Verified against the Vaillant Ecotec Exclusive Combi installation & service manual, page 18.
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 boiler is stuck in a manual installation or test program.Attempt to restart the boiler by turning it off at the fused spur for 60 seconds.If the code persists, navigate the menu to ensure the 'Filling mode' has been manually exited.

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