 key, then pressing the UNIT DATA key again willbring the user to the first screen of the UNIT DATAmenu.The  key and the  key are used to scroll “side-ways” between the same displays for each system. Forexample, when viewing the Sys 1 Pressures under theCOMPRESSOR SYSTEMS key, pressing the  keywill scroll “sideways” to the Sys 2 Pressures displayand pressing the  key will scroll “sideways” to theSys Pressures display for the last system on the unit.When programming numeric or non-numeric values,the  key and the  key are used to scroll forward(down) and backward (up) through the items to be pro-grammed or set.FORM 145.05-SU3 (611)ISSUE DATE 6/01/2011JOHNSON CONTROLS23APPENDIX 1 - USER INTERFACE

York YSWU 10 Quick Start Up Manual