JOHNSON CONTROLS
7
FORM 150.72-ICOM7
ISSUE DATE: 10/22/2020
TABLE OF CONTENTS (CONT’D)
SECTION 9 – SERVICE AND TROUBLESHOOTING .....................................................................................167
Clearing History Buffers................................................................................................................................ 167
Service Mode ...............................................................................................................................................167
Service Mode – Outputs ............................................................................................................................... 167
Service Mode – Chiller Configuration ........................................................................................................... 168
Service Mode – Analog and Digital Inputs .................................................................................................... 168
Control Inputs/Outputs .................................................................................................................................169
Checking Inputs and Outputs .......................................................................................................................171
Optional Printer Installation ..........................................................................................................................177
Troubleshooting ............................................................................................................................................179
SECTION 10 – MAINTENANCE .........................................................................................................................181
Compressors ................................................................................................................................................181
Condenser Fan Motors .................................................................................................................................181
Condenser MCHX Cleaning .........................................................................................................................181
Operating Parameters ..................................................................................................................................182
On-Board Battery Back-Up ...........................................................................................................................182
Thermal Dispersion Flow Switch ..................................................................................................................182
Brazed Plate Heat Exchanger (Evaporator) Heater .....................................................................................182
Overall Unit Inspection .................................................................................................................................182
Temperature .................................................................................................................................................185
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