
NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4.7 Charging the Remaining Refrigerant........................................................................................................................ 118
4.8 Startup wizard........................................................................................................................................................... 118
4.9 (Optional) Power-off.................................................................................................................................................126
4.10 Checking After Commissioning..............................................................................................................................127
5 Operation and Maintenance ...................................................................................................128
5.1 Routine Maintenance................................................................................................................................................128
5.1.1 Data Record...........................................................................................................................................................128
5.1.2 Monthly Maintenance............................................................................................................................................128
5.1.3 Quarterly Maintenance ..........................................................................................................................................131
5.1.4 Yearly Maintenance ...............................................................................................................................................132
5.2 Alarm Reference.......................................................................................................................................................133
5.3 Troubleshooting........................................................................................................................................................154
5.4 Parts Replacement ....................................................................................................................................................158
5.4.1 Replacing the Air Filter..........................................................................................................................................158
5.4.2 Replacing the Indoor Fan.......................................................................................................................................159
5.4.3 Replacing the Differential Pressure Switch ...........................................................................................................162
5.4.4 Replacing the Compressor.....................................................................................................................................165
5.4.5 Replacing the Filter Dryer .....................................................................................................................................172
5.4.6 Replacing the Driver..............................................................................................................................................175
5.4.7 Replacing the Liquid Level Detector.....................................................................................................................178
5.4.8 Replacing the Condensate Pump ...........................................................................................................................182
5.4.9 Replacing the Humidifier Pump ............................................................................................................................186
5.4.10 Replacing the Wet Film Humidifier.....................................................................................................................189
5.4.11 Replacing the Electric Heater ..............................................................................................................................192
5.4.12 Replacing a Strong-current Box...........................................................................................................................196
5.4.13 Replacing Main Control Module, Auxiliary Power Supply Module, or PSU......................................................199
5.4.14 Replacing the T/H Sensor....................................................................................................................................202
5.4.15 Replacing the LCD ..............................................................................................................................................204
5.4.16 Replacing the Switch ...........................................................................................................................................208
5.4.17 Replacing the Contactor.......................................................................................................................................210
5.4.18 Replacing the SPD...............................................................................................................................................212
5.4.19 Replacing the Relay.............................................................................................................................................214
5.4.20 Replacing the Fuse...............................................................................................................................................216
6 FAQ..............................................................................................................................................219
6.1 Querying Temperature and Humidity Curves...........................................................................................................219
6.2 How Can I Handle Active Alarms?...........................................................................................................................220
6.3 Querying Logs ..........................................................................................................................................................221
6.4 Querying Device Runtime ........................................................................................................................................222
6.5 Querying Component Status.....................................................................................................................................222
6.6 Querying System Parameters....................................................................................................................................223
6.7 Querying Version Details..........................................................................................................................................225