Low
d.24 on Vaillant ecoFIT Pure 835

Your boiler is checking if the water pressure is within the correct range before it starts heating.

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

Status of the pressure monitor (off=Not switched, on=Switched)

From this model's manual
Verified against the Vaillant Ecofit Pure 830 installation & service manual, page 30.
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 the water pressure gauge on the front of the boiler or via the display.If the pressure is below 1.0 bar, use the filling loop handles underneath the boiler to increase it to 1.5 bar.Ensure any air has been bled from your radiators if you have recently topped up the system.

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F.22View →F.24View →d.16View →

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