Low
1037 W on Worcester Bosch 35 RSF

Your boiler has lost contact with the outdoor thermometer that helps it adjust to the weather, which may make your heating less efficient.

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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