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

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

Technical description

Number of blocks by the temperature sensor

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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Related fault codes

F.20View →F.22View →F.24View →

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