Elevator Forum ForumsWhat’s NewRecent PostsMembers Forums General Discussion Technical Questions TAC50-04 663 Fault ... Notifications Clear all TAC50-04 663 Fault w/Accord Drive Technical Questions Last Post by Anonymous 1 week ago 1 Posts 1 Users 0 Reactions 922 Views RSS wltr00 (@wltr00) Joined: 1 second ago Posts: 0 Topic starter 15/01/2019 3:39 am [#25646] TAC50-04 32 bit giving 663 faults in down direction on INSP. Will run up fine on INSP. Has Accord drive with 5ST board. What can most likely be causing this? Quote Share: