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    C/H OK H/W WORKS ONLY WITH C/H

    I currently have an old potterton gas boiler (not sure about model, perhaps between 40el - 80el) It has a RANDALL 4033 CONTROLL. The C/H works fine and independantly as and when I want it. I can switch on the C/H, and the boiler ignites and everything is fine. The H/W however doesnt...
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