Low
S.32 on Vaillant ecoTEC

Your boiler has temporarily stopped itself because it sensed an irregularity in how the internal fan is spinning, so it is currently waiting for a safety period to end before it tries to start again.

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

Heat exchanger antifreeze active, as fan speed variation is too high. Appliance is within the waiting time of the operation block function

From this model's manual
Verified against the Vaillant Ecotec installation & service manual, page 43.
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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