York YCAS0098EB, Installation Operation & Maintenance, Page: 6 / 184

6
JOHNSON CONTROLS
TABLE OF CONTENTS (CONT’D)
SECTION 8 MICRO PANEL CONTENTS ..................................................................................... 120
Chiller Control Panel Programming and Data Access Keys ........................................................... 120
Display and Status Information Keys................................................................................................ 120
ON / OFF Rocker Switch ..................................................................................................................... 120
Program & Setup Keys ....................................................................................................................... 120
1. INTRODUCTION & PHYSICAL DESCRIPTION ........................................................................ 121
1.1 General 121
1.2 Keypad & Display ................................................................................................................... 121
1.3 Unit (Chiller) On / OFF Switch ............................................................................................... 122
1.4 Microprocessor Board ............................................................................................................. 122
1.5 Ancillary Circuit Boards .......................................................................................................... 122
1.6 Circuit Breakers ....................................................................................................................... 123
1.7 Current Transformers (C.T.) .................................................................................................... 123
1.8 Transformers ............................................................................................................................ 123
1.9 Motor Protection Modules ....................................................................................................... 124
1.10 EMS/BAS Controls .................................................................................................................. 126
1.11 Microprocessor Board Layout .................................................................................................. 128
1.12 Logic Section Layout ................................................................................................................ 129
1.13 Anti-Recycle Timer .................................................................................................................. 130
1.14 Anti-Coincidence Timer ........................................................................................................... 130
1.15 Evaporator Pump Control ......................................................................................................... 130
1.16 Compressor Heater Control ...................................................................................................... 130
1.17 Evaporator Heater Control ........................................................................................................ 130
1.18 Pumpdown (LLSV) Control ..................................................................................................... 130
1.19 Alarms 130
1.20 Run Status (Chiller) .................................................................................................................. 131
1.21 Lead / Lag Compressor Selection ............................................................................................. 131
2. STATUS KEY: GENERAL STATUS MESSAGES & FAULT WARNINGS.................................. 132
2.1 General 132
2.2 General Status Messages .......................................................................................................... 132
2.3 Unit Warnings ........................................................................................................................... 133
2.4 Anticipation Control Status Messages ...................................................................................... 134
2.5 Unit Fault Status Messages ....................................................................................................... 135
2.6 System Fault (Safety) Status Messages .................................................................................... 136
2.7 Printout on Fault Shutdown ...................................................................................................... 139
3. DISPLAY KEYS & OPTION SWITCHES ...................................................................................... 140
3.1 General 140
3.2 Chilled Liquid Temps Key ........................................................................................................ 140
3.3 System # Data Keys .................................................................................................................. 141
3.4 Ambient Temp Key ................................................................................................................... 141
3.5 Motor Current Key ................................................................................................................... 142
3.6 Operating HRS / Start Counter Key ......................................................................................... 142
3.7 Options Key & Dip Switch Settings ......................................................................................... 142
3.8 Function Key ............................................................................................................................ 144
4. PRINT KEYS ....................................................................................................................................... 145
4.1 General 145
4.2 Oper Data Key .......................................................................................................................... 145
4.3 Operating Data – Local Display Messages ............................................................................... 145
4.4 Operating Data – Remote Printout ........................................................................................... 146
4.5 History Key ............................................................................................................................... 148
4.6 Fault History Data – Local Display Messages ......................................................................... 148
4.7 Fault History Data – Remote Printout ...................................................................................... 151