JOHNSON CONTROLS
7
FORM 150.73-NM1
ISSUE DATE: 09/04/2020
SECTION 9 – SERVICE AND TROUBLESHOOTING .....................................................................................141
Clearing History Buffers................................................................................................................................ 141
Service Mode – Outputs ............................................................................................................................... 141
Service Mode – Condensing Unit Configuration ..........................................................................................141
Service Mode – Analog and Digital Inputs ....................................................................................................142
Control Inputs/Outputs .................................................................................................................................143
Checking Inputs and Outputs .......................................................................................................................145
Optional Printer Installation ..........................................................................................................................149
SECTION 10 – MAINTENANCE .........................................................................................................................153
Important ......................................................................................................................................................153
Compressors ................................................................................................................................................153
Condenser Fan Motors .................................................................................................................................153
Condenser Coils ........................................................................................................................................... 153
Operating Parameters ..................................................................................................................................153
On-Board Battery Back-Up ...........................................................................................................................153
Overall Unit Inspection .................................................................................................................................153
ISN Control ................................................................................................................................................... 154
BACnet and Modbus Data Communication ..................................................................................................157
TABLE OF CONTENTS (CONT’D)
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