Medium
N.032 on Vaillant ecoTEC Plus 832

Your boiler is struggling to detect the water flow correctly, likely due to trapped air or a faulty sensor, which is preventing it from heating your home properly.

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

Air in the system. The volume flow sensor is defective or the signal is not plausible.

From this model's manual
Verified against the Vaillant Ecotec Plus installation & service manual, page 93.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

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

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