Elevator Forum pradeep_76_2000 @pradeep-76-2000 Forum Home | Recent Posts New Member Joined: Jan 1, 2010 Follow Profile Activity Topics: 0 / Replies: 1 AllTopicsReplies Reply I am facing missing node very often. We have MXGC controller. Controllers are located near HVAC equipment. Does HVAC effect on LON bus? 9 years ago Forum Technical Questions