High
Sensor Fault on Worcester Bosch 24CDi BF

Your boiler's computer is unable to read signals from essential internal safety sensors, causing it to shut down to prevent potential damage.

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

DHW sensor resistance not between 1 kohm and 30 kohm; CH sensor resistance not between 1 kohm and 30 kohm; Flue gas safety device resistance not between 1 kohm and 30 kohm; Gas valve harness continuity or resistance error.

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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