High
E2 351 on Worcester Bosch Heatslave

Your boiler has lost its connection to the component that monitors how hot the water is getting, meaning it cannot operate safely and has shut down.

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

Flow temperature sensor disconnected

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

E2 350View →E2 233View →

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