Low
d.47 on Vaillant ecoFIT Pure 412

Your boiler is struggling to read the temperature from an outdoor weather sensor, which means it cannot automatically adjust your heating performance based on the weather outside.

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.

Technical description

Outside temperature

Engineer required

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

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