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  1. K

    Blown PCB

    Valiant Sine 18 T3WF H Serial No. 18921586 Could anybody please tell me what might have caused the PCB to blow on the above boiler. Hopefully picture will be attached by admin.
  2. K

    Valiant Combi Boiler

    I have a Valiant Sine 18 Combi Boiler which has served me well for many years. I now have a problem. I can only get hot water to the taps when the heating side is on. If the heating side is off, I only get cold water from the taps. Can anybody help.
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