Low
F.080 on Vaillant ecoTEC Plus 832

Your boiler is struggling to accurately measure the temperature of the water coming into the system, which may affect your hot water performance.

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

Inlet temperature sensor defective or not connected. The cold water inlet temperature sensor in the internal cylinder is defective.

From this model's manual
Verified against the Vaillant Ecotec Plus installation & service manual, page 87.
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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