Low
1037 W on Worcester Bosch Heatslave

Your boiler is having trouble communicating with the outdoor sensor that monitors the weather, which may affect how efficiently it balances 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

Outside temperature sensor is defective – check the connecting lead

Engineer required

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

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