York YLAA Series Installation Operation & Maintenance page 7

FORM 150.72-ICOM6
ISSUE DATE: 12/29/2017
SECTION 9 - SERVICE AND TROUBLESHOOTING ..........................................................................................161
Clearing History Buffers................................................................................................................................ 161
Service Mode ............................................................................................................................................... 161
Service Mode - Outputs ............................................................................................................................... 161
Service Mode - Chiller Configuration ........................................................................................................... 162
Service Mode - Analog and Digital Inputs .................................................................................................... 162
Control Inputs/Outputs ................................................................................................................................. 163
Checking Inputs and Outputs ....................................................................................................................... 165
Optional Printer Installation .......................................................................................................................... 168
Troubleshooting ............................................................................................................................................ 170
SECTION 10 - MAINTENANCE ...........................................................................................................................173
Compressors ................................................................................................................................................ 173
Condenser Fan Motors ................................................................................................................................. 173
Condenser MCHX Cleaning ......................................................................................................................... 173
Operating Parameters .................................................................................................................................. 174
On-Board Battery Back-Up ........................................................................................................................... 174
Brazed Plate Heat Exchanger (Evaporator) Heater ..................................................................................... 174
Overall Unit Inspection ................................................................................................................................. 174
Temperature ................................................................................................................................................. 177
JOHNSON CONTROLS
TABLE OF CONTENTS (CONT'D)
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