High
FC on Worcester Bosch Greenstar 25i (ZWB 7-25)

Your boiler's electronic display panel is failing to communicate with the internal computer, which prevents the unit from operating normally.

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

Text display module not detected

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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