Payne electric furnace sequencer wiring diagram - s1 43101972100 york diamond 80 control board s1 43101972100 l45 088 replaces l38 806 331 01972 100 as used in york furnace model p4hud20n 10 401a and others cnt02536 trane american standard xv90 2 stage variable speed gas furnace control trane 2 stage heating variable speed furnace circuit board cnt02536 is now obsolete this control has been replaced by trane with kit15017 kit15018 kit15019 or kit15020 united states charlotte search the history of over 351 billion web pages on the inter