Low
1068 W on Worcester Bosch Junior 28i

Your boiler's external temperature sensor is sending an incorrect signal or is no longer communicating, which may affect how efficiently your heating responds to the weather.

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 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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