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  1. York Affinity (YZB) HeatPump perpetual defrost

    Started by dsomerv, 11-26-2011 10:04 PM
    defrost, york heat pump
    • Replies: 5
    • Views: 1,825
    Last Post: 12-18-2011 04:18 PM
    by dsomerv  Go to last post
  2. York Affinity (YZB) HeatPump defrost control

    Started by dsomerv, 11-07-2011 02:57 PM
    aux, defrost
    • Replies: 12
    • Views: 2,390
    Last Post: 11-12-2011 06:43 PM
    by dsomerv  Go to last post
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