Low
P.06 on Vaillant ecoFIT Pure 425

Your boiler is currently in a manual filling or draining mode, which is why it is temporarily preventing the heating and hot water from working.

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 Ecofit Pure 830 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.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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