High
F0 262 on Worcester Bosch Greenstar i

Your boiler's internal computer is malfunctioning, meaning the system has safely shut down because it cannot correctly manage its heating and hot water functions.

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

Control box or the HCM is defective.

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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