Low
d.58 on Vaillant ecoFIT Pure 835

Your boiler is receiving heat from an external solar thermal system instead of using gas to heat the water.

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

Solar circuit reheating

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 solar thermal control panel to ensure it is operating correctlyMonitor the boiler to see if the status code disappears once the solar system stops providing heatNo action is required as this is an advisory status rather than a breakdown

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