Low
d.25 on Vaillant ecoFIT Pure 425

Your boiler is currently receiving a signal from your thermostat to heat your hot water cylinder or prepare for hot water delivery.

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

Status of the requirement to reheat the cylinder or for the hot water warm start from the eBUS thermostat

DIY fix possible

Check your thermostat or programmer settings to see if hot water is scheduled to be on.If you do not want hot water heating at this time, turn the hot water demand off at your control panel.Verify that your cylinder thermostat is set to your desired temperature.

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