Medium
F.73 on Vaillant ecoFIT Pure 412

Your boiler's water pressure sensor is sending an incorrect signal, which means the system cannot accurately detect the water level inside the boiler.

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

Water pressure sensor signal in the wrong range (too low)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

F.22View →F.74View →

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