Johnson Controls YORK Tempo YLAA Series User Manual

JOHNSON CONTROLS
10
FORM 150.72-NM1 (1020)
SECTION 9 – SERVICE AND TROUBLESHOOTING ................................................................................165
CLEARING HISTORY BUFFERS ........................................................................................................... 165
SERVICE MODE ......................................................................................................................................165
SERVICE MODE – OUTPUTS ................................................................................................................165
SERVICE MODE – CHILLER CONFIGURATION .................................................................................166
SERVICE MODE – ANALOG AND DIGITAL INPUTS ..........................................................................166
CONTROL INPUTS/OUTPUTS ..............................................................................................................167
MICROBOARD LAYOUT ........................................................................................................................168
CHECKING INPUTS AND OUTPUTS ....................................................................................................169
Digital Inputs ......................................................................................................................................169
Analog Inputs – Temperature ...........................................................................................................169
Outside Air Sensor ............................................................................................................................169
Liquid & Refrigerant Sensor Test Points ........................................................................................170
Analog Inputs – Pressure .................................................................................................................171
Digital Outputs ...................................................................................................................................172
OPTIONAL PRINTER INSTALLATION .................................................................................................173
Parts .................................................................................................................................................... 173
Assembly and Wiring ........................................................................................................................173
Obtaining a Printout ..........................................................................................................................173
TROUBLESHOOTING .............................................................................................................................174
SECTION 10 – MAINTENANCE ....................................................................................................................177
IMPORTANT .............................................................................................................................................177
COMPRESSORS .....................................................................................................................................177
Oil Level Check ..................................................................................................................................177
Oil Analysis ........................................................................................................................................177
CONDENSER FAN MOTORS .................................................................................................................177
CONDENSER COILS ..............................................................................................................................177
OPERATING PARAMETERS .................................................................................................................. 177
ON-BOARD BATTERY BACK-UP .......................................................................................................... 177
EVAPORATOR HEATER ......................................................................................................................... 177
OVERALL UNIT INSPECTION ...............................................................................................................177
BACNET, MODBUS AND YORKTALK 2 COMMUNICATIONS ...........................................................178
BACnet and Modbus Communications ...........................................................................................181
Communications Data Map Notes ...................................................................................................181
Yorktalk 2 Communications .............................................................................................................185
TEMPERATURE CONVERSION CHART ..............................................................................................189
R410A PRESSURE TEMPERATURE CHART ......................................................................................190
TABLE OF CONTENTS (CONT’D)

Johnson Controls YORK Tempo YLAA Series Specifications

General

Brand	Johnson Controls
Model	YORK Tempo YLAA Series
Category	Chiller
Language	English