Low
d.71 on Vaillant ecoFIT Pure 830

Your boiler is simply reporting that the water temperature has reached the maximum level you have set on its control dial.

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

Maximum heating flow set target temperature

From this model's manual
Verified against the Vaillant Ecofit Pure 830 installation & service manual, page 31.
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 your boiler control dial or thermostat settings.If the room is warm enough, no action is required as this is normal operation.Lower the heating temperature dial if you wish to reduce the target heat.

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