York MILLENNIUM YCAS Installation Operation & Maintenance page 4

1.17 Evaporator Heater Control .................................................................................................... 106
1.18 Pumpdown (LLSV) Control .................................................................................................. 106
1.19 Alarms ................................................................................................................................... 106
1.20 Run Status (Chiller) .............................................................................................................. 107
1.21 Lead / Lag Compressor Selection ...................................................................................... 107
1.22 3/4 Compressor Chiller Configuration ................................................................................ 107
2. STATUS KEY & FAULT MESSAGES ................................................................................................ 108
2.1 General ................................................................................................................................. 108
2.2 General Status Messages ................................................................................................... 108
2.3 Unit Warnings ....................................................................................................................... 109
2.4 Anticipation Control Status Messages ................................................................................. 110
2.5 Unit Fault Status Messages .................................................................................................. 111
2.6 System Fault (Safety) Status Messages ............................................................................... 112
2.7 Printout on Fault Shutdown ................................................................................................... 115
3. DISPLAY KEYS & OPTION SWITCHES ........................................................................................... 116
3.1 General .................................................................................................................................. 116
3.2 Chilled Liquid Temperatures Key ........................................................................................ 116
3.3 System Data Keys .................................................................................................................. 116
3.4 Ambient Temp Key ................................................................................................................. 117
3.5 Motor Current Key .................................................................................................................. 117
3.6 Operating Hours / Start Counter Key .................................................................................... 118
3.7 Options Key & Dip Switch Settings ....................................................................................... 118
3.8 Function Key ........................................................................................................................... 119
4. PRINT KEYS .................................................................................................................................... 120
4.1 General ................................................................................................................................. 120
4.2 Oper Data Key ....................................................................................................................... 120
4.3 Operating Data - Local Display Messages ......................................................................... 120
4.4 Operating Data - Remote Printout ....................................................................................... 122
4.5 History Key ............................................................................................................................ 123
4.6 Fault History Data - Local Display Messages ..................................................................... 123
4.7 Fault History Data - Remote Printout ................................................................................... 126
5. ENTRY KEYS ................................................................................................................................... 127
5.1 General ................................................................................................................................. 127
5.2 Numerical Keypad ................................................................................................................ 127
5.3 Enter Key ............................................................................................................................... 127
5.4 Cancel Key ............................................................................................................................ 127
5.5 - ¯ Keys ................................................................................................................................. 127
6. SETPOINTS KEYS .......................................................................................................................... 128
6.1 General ................................................................................................................................. 128
6.2 Chilled Liquid Temperature Control .................................................................................... 128
6.3 Local Cooling Setpoints Key ................................................................................................ 131
6.4 Remote Cooling Setpoints Key ............................................................................................ 131
7. CLOCK KEYS .................................................................................................................................. 132
7.1 General ................................................................................................................................. 132
7.2 Set Time Key ......................................................................................................................... 132
7.3 Set Schedule / Holiday Key .................................................................................................. 132
7.4 Manual Override Key ............................................................................................................. 134
8. PROGRAM KEY ............................................................................................................................... 135
8.1 General ................................................................................................................................. 135
8.2 Program Key - User Programmable Values ....................................................................... 136
8.3 Programming "Default" Values ............................................................................................ 139
8.4 Condenser Fan Control ........................................................................................................ 141
SECTION 10 MAINTENANCE
General Requirements .................................................................................................................. 142
Daily Maintenance .......................................................................................................................... 142
Scheduled Maintenance ................................................................................................................ 142
Chiller/Compressor Operating Log ............................................................................................... 143
Maintenance Requirements .......................................................................................................... 144
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YORK INTERNATIONAL