High
1075 W on Worcester Bosch 26 CDi Xtra

Your boiler has detected an electrical fault with an internal temperature sensor, meaning it cannot monitor heat levels safely and has shut down to prevent damage.

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

Short circuit of the temperature sensor at the heating block – temperature sensor may need replacing

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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