Low
d.62 on Vaillant ecoFIT Pure 435

Your boiler is currently running at a lower temperature during the night to save energy, which is a normal setting and not an error.

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.

Technical description

Night set-back

DIY fix possible

Check your external thermostat or timer settingsAdjust the night setback temperature on your controls if it is too coldSwitch the heating off and back on to check if the status clears

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