Low
d.62 on Vaillant ecoFIT Pure 835

Your boiler is currently operating in a programmed energy-saving mode where it runs at a reduced temperature during the night.

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

Night set-back

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 external thermostat or time clock settings.Adjust the 'night' or 'set-back' temperature profile if the heating is too cool.Switch the controller to 'Comfort' or 'Auto' mode to override the setting.

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d.61View →d.65View →

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