High
2914 on Worcester Bosch Greenstar 8000 Style

Your boiler's internal electronic brains have lost their connection, meaning the system cannot safely ignite to provide heating or hot water.

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

There is no communication between the appliance controller and burner module

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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