High
2966 on Worcester Bosch Greenstar 8000 Life System

Your boiler is struggling to move water around effectively, causing it to overheat very quickly because the heat isn't being transferred into your radiators or water properly.

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 rise in heat exchanger too rapid

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

2965View →2967View →

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