Low
226 on Worcester Bosch Junior 24i

Your boiler has recorded that a technician's diagnostic tool was plugged into its internal memory, usually during a previous service or repair.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Service tool has been connected in the blocking error history menu

DIY fix possible

Press and hold the Reset button for five secondsObserve if the fault light clears and the boiler restartsEnsure no external diagnostic equipment is currently plugged into the control board

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