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  1. M

    VAILLANT ECOTEC PLUS 831 2 AMP FUSE PROBLEM

    The pump has been checked and seems fine . The fuse sometimes blows even when there is no water or heating on. :?
  2. M

    VAILLANT ECOTEC PLUS 831 2 AMP FUSE PROBLEM

    Vaillant Ecotec Plus 831 keeps blowing the 2 amp fuse on the circuit board for no apparent reason , I replace it and it runs for anywhere between 10 minutes and 10 hours before blowing again. Pump ,fan , hot water and heating all working till it blows. HELP :?: :?:
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