Low
10 on Viessmann Vitodens

Your boiler is receiving a faulty or confused signal from the weather sensor located outside your home, causing it to struggle with calculating the correct temperature for your heating.

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

Temperature sensor, outdoor sensor short circuit

Engineer required

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

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