High
112 on Worcester Bosch Greenstar 12i System

Your boiler's internal memory key is not correctly recognized, which is preventing the system from starting up safely.

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

Code plug for 12i System NATURAL GAS

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

113View →114View →

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