High
2946 V on Worcester Bosch 35 RSF

Your boiler’s internal configuration chip is incorrect or faulty, which means the main control board cannot identify which model it is supposed to be operating.

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

Incorrect code plug detected – the code plug needs replacing

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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