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Mend Worcester 28si Boiler Heating Repair

How can I fix my Worcester 28si?

I ordered a new PCB board for my boiler, everthing fitted back of apart from the code plug does not fit the new board. My question is what does the code plug cotrol? If I order with the part number from my 28si manual will this fit my new board?

Dave Clarke
June 2010

Worcester Worcester 28si Heating, Home Heating Systems Boiler Heating Repair

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Worcester 28si Boiler Repair & Code Plug Issue