Medium
d.60 on Vaillant ecoFIT Pure 435

Your boiler has paused heating because it detects a sudden temperature imbalance, likely caused by trapped air or a blockage in the pipes.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

Number of blocks by the temperature sensor

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 that all your radiator valves are fully open.Try bleeding your radiators to remove any trapped air.Reset the boiler using the flame/reset button.

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