8.5.4 Replacing an Air Filter (FDC Scenario).................................................................................................................... 190

8.5.5 Replacing a Differential Pressure Switch (Building Scenario)......................................................................... 192

8.5.6 Replacing a Differential Pressure Switch (FDC Scenario)................................................................................. 193

8.5.7 Replacing a T/H Sensor (Building Scenario)......................................................................................................... 195

8.5.8 Replacing a T/H Sensor (FDC Scenario)................................................................................................................. 196

8.5.9 Replacing an Air Exhaust NTC Temperature Sensor (Building Scenario).................................................... 198

8.5.10 Replacing an Air Exhaust NTC Temperature Sensor (FDC Scenario)..........................................................200

8.5.11 Replacing an Air Supply NTC Temperature Sensor........................................................................................... 200

8.5.12 Replacing an Air Supply Fan..................................................................................................................................... 201

8.5.13 Replacing an Exhaust Fan.......................................................................................................................................... 205

8.5.14 Replacing a Precooling Module............................................................................................................................... 207

8.5.15 Replacing a Compressor............................................................................................................................................. 208

8.5.15.1 Replacing a Compressor......................................................................................................................................... 208

8.5.15.2 R410A Refrigerant..................................................................................................................................................... 211

8.5.15.3 Injecting Nitrogen to Preserve the Pressure for Refrigerant Pipes...........................................................213

8.5.15.4 Vacuumizing and Precharging Refrigerant.......................................................................................................214

8.5.15.4.1 Refrigerant Charge Amount Requirements.................................................................................................. 215

8.5.15.4.2 Vacuumizing............................................................................................................................................................ 215

8.5.15.4.3 Precharging Refrigerant....................................................................................................................................... 216

8.5.15.5 Charging the Remaining Refrigerant..................................................................................................................218

8.5.16 Replacing a Filter Dryer.............................................................................................................................................. 219

8.5.17 Replacing a Compressor Drive................................................................................................................................. 221

8.5.18 Replacing a Fan Drive................................................................................................................................................. 223

8.5.19 Replacing a Liquid Level Sensor.............................................................................................................................. 224

8.5.20 Replacing a Water Pump........................................................................................................................................... 226

8.5.21 Replacing a Switch....................................................................................................................................................... 227

8.5.22 Replacing a Contactor................................................................................................................................................. 229

8.5.23 Replacing an SPD..........................................................................................................................................................230

8.5.24 Replacing a Fuse........................................................................................................................................................... 231

8.5.25 Replacing a Relay......................................................................................................................................................... 231

9 FAQ......................................................................................................................................... 233

9.1 Display Module Screen Operations.............................................................................................................................. 233

9.1.1 How Do I Check Temperature and Humidity Curves?........................................................................................233

9.1.2 How Do I View Logs?.....................................................................................................................................................234

9.1.3 How Do I View Component Status?......................................................................................................................... 234

9.1.4 How Do I View System Parameters?........................................................................................................................ 235

9.1.5 How Do I View Version Information?...................................................................................................................... 235

9.1.6 How Do I View the Service Information?............................................................................................................... 235

9.1.7 How Do I Check Teamwork Control Information?.............................................................................................. 236

9.1.8 How Do I Mute or Silence a Buzzer?....................................................................................................................... 236

9.1.9 How Do I Handle Alarms?........................................................................................................................................... 236

9.1.10 How Do I Clear Component Runtime?..................................................................................................................237

Issue 02 (2021-04-15)

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Table of Contents