High
Sensor Fault on Worcester Bosch 26 CDi Xtra

Your boiler is struggling to accurately measure the temperature of the water, which means it has stopped heating because it is unsure if it is safe to do so.

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 or CH sensor resistance (between 1 kohm and 30 kohm) or harness continuity.

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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