High
D1 241 on Worcester Bosch 26 CDi Xtra

Your boiler has stopped working because it has lost a connection with one of its internal heat sensors.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

The contacts of the boiler return temperature sensor have been interrupted

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

D1 240View →A7View →

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