Table of Contents
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Form 150.72-ICOM6
Issue date: 12/19/2023
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 round tube coils ......................................................................................................................... 199
Condenser MCHX ........................................................................................................................................ 199
Microchannel coil cleaning ........................................................................................................................... 199
Operating parameters .................................................................................................................................. 202
On-board battery backup .............................................................................................................................. 202
Thermal dispersion flow switch .................................................................................................................... 202
Brazed plate heat exchanger (evaporator) heater ........................................................................................202
Overall unit inspection .................................................................................................................................. 202
Temperature ................................................................................................................................................. 206
Johnson Controls
Table of contents (cont'd)
7
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Table of Contents
Troubleshooting
