York YCWL0056SE Installation Operation & Maintenance page 10

SAFETY SYMBOLS
Alarm Status ................................................................................................................................................. 152
Ems-Pwm Remote Temperature Reset ........................................................................................................ 152
Bas/Ems Temperature Reset Using A Voltage Or Current Signal ................................................................ 153
SECTION 9 - SERVICE AND TROUBLESHOOTING ..........................................................................................155
Clearing History Buffers................................................................................................................................ 155
Service Mode ............................................................................................................................................... 155
Service Mode - Outputs ............................................................................................................................... 155
Service Mode - Chiller Configuration ........................................................................................................... 156
Service Mode - Analog And Digital Inputs ................................................................................................... 156
Control Inputs/Outputs ................................................................................................................................. 157
Microboard Layout ........................................................................................................................................ 158
Checking Inputs And Outputs ....................................................................................................................... 159
Digital Inputs ........................................................................................................................................159
Analog Inputs - Temperature .............................................................................................................. 159
Liquid and Refrigerant Sensor Test Points ......................................................................................... 160
Analog Inputs - Pressure ....................................................................................................................161
Digital Outputs .....................................................................................................................................162
Optional Printer Installation .......................................................................................................................... 163
Acceptable Printers ...................................................................................................................................... 163
Okidata OKIPOS 441 Printer ............................................................................................................... 163
Printer Connections ...................................................................................................................................... 163
Required Hardware: ............................................................................................................................163
Cable ............................................................................................................................................163
Connectors ...................................................................................................................................163
Printer Setup ................................................................................................................................................ 163
Okidata OKIPOS 441 Printer ............................................................................................................... 163
Printing A Report .......................................................................................................................................... 164
Troubleshooting ............................................................................................................................................ 165
SECTION 10 - MAINTENANCE ...........................................................................................................................169
Important ...................................................................................................................................................... 169
Compressors ................................................................................................................................................ 169
Oil Level check ....................................................................................................................................169
Oil Analysis ..........................................................................................................................................169
Operating Parameters .................................................................................................................................. 169
On-Board Battery Back-Up ........................................................................................................................... 169
Overall Unit Inspection ................................................................................................................................. 169
BACnet And Modbus Data Communications ................................................................................................ 170
BACnet and Modbus Communications ............................................................................................... 172
Analog Write Points .....................................................................................................................172
Binary Write Points ......................................................................................................................172
Analog Read Only Points .............................................................................................................172
Binary Monitor Only Points ..........................................................................................................172
Communications Data Map Notes: ..............................................................................................172
Yorktalk 2 Communications .................................................................................................................177
Received Data (Control Data) ......................................................................................................177
Transmitted Data..........................................................................................................................177
Temperature Conversion Chart .................................................................................................................... 184
R410-A Pressure Temperature Chart ........................................................................................................... 185
Temperature ................................................................................................................................................. 187
10
FORM 201.26-NM1
ISSUE DATE: 1/19/2018
JOHNSON CONTROLS