York YLAA0041 Manual page 7

FORM 150.72-ICOM6
ISSUE DATE: 08/03/2022
SECTION 9 - SERVICE AND TROUBLESHOOTING .....................................................................................185
Clearing History Buffers................................................................................................................................ 185
Resetting System Lockout Faults ................................................................................................................. 185
Service Mode ............................................................................................................................................... 185
Service Mode - Outputs ............................................................................................................................... 185
Service Mode - Chiller Configuration ........................................................................................................... 186
Service Mode - Analog and Digital Inputs .................................................................................................... 186
Control Inputs/Outputs ................................................................................................................................. 187
Checking Inputs and Outputs ....................................................................................................................... 189
Optional Printer Installation .......................................................................................................................... 195
Troubleshooting ............................................................................................................................................ 197
SECTION 10 - MAINTENANCE .........................................................................................................................199
Compressors ................................................................................................................................................ 199
Condenser Fan Motors ................................................................................................................................. 199
Condenser MCHX Cleaning ......................................................................................................................... 199
Operating Parameters .................................................................................................................................. 201
On-Board Battery Backup ............................................................................................................................ 203
Thermal Dispersion Flow Switch .................................................................................................................. 203
Brazed Plate Heat Exchanger (Evaporator) Heater ..................................................................................... 203
Overall Unit Inspection ................................................................................................................................. 203
JOHNSON CONTROLS
TABLE OF CONTENTS (CONT'D)
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