5.1 Preparing for Power-On......................................................................................................................................................94

5.2 Power-On................................................................................................................................................................................. 94

5.3 Home Screen........................................................................................................................................................................ 100

5.4 Menu Function Description............................................................................................................................................. 102

5.5 Setting Parameters.............................................................................................................................................................103

5.5.1 Setting T/H Sensor Parameters.................................................................................................................................. 103

5.5.2 (Optional) Setting the Pressure Difference Control............................................................................................106

5.5.3 Setting Teamwork Parameters................................................................................................................................... 107

5.5.4 Setting Communications Parameters....................................................................................................................... 113

5.5.4.1 Setting Access Control Parameters........................................................................................................................ 113

5.5.4.2 Setting Communications Parameters (RTU Protocol).................................................................................... 114

5.5.4.3 Setting Communications Parameters (TCP Protocol)..................................................................................... 115

5.5.4.4 Setting Communications Parameters (SNMP Protocol).................................................................................117

5.5.4.5 (Optional) Setting WIFI Parameters..................................................................................................................... 119

5.5.5 Correlation Relationship of Parameters.................................................................................................................. 120

5.6 Startup.................................................................................................................................................................................... 121

5.7 Startup Wizard.................................................................................................................................................................... 123

5.8 (Optional) Power-Off........................................................................................................................................................126

5.9 Antifreeze Handling........................................................................................................................................................... 126

5.10 Checking After Commissioning................................................................................................................................... 128

6 WebUI.................................................................................................................................... 129

6.1 Preparations and WebUI Login...................................................................................................................................... 129

6.2 WebUI Description............................................................................................................................................................. 131

7 System Operation and Maintenance..............................................................................133

7.1 Routine Maintenance........................................................................................................................................................ 133

7.1.1 Routine Maintenance Overview.................................................................................................................................133

7.1.2 Routine Maintenance Items........................................................................................................................................ 134

7.2 Alarm Reference..................................................................................................................................................................136

7.3 Troubleshooting.................................................................................................................................................................. 137

7.4 Parts Replacement............................................................................................................................................................. 139

7.4.1 Replacement Requirements......................................................................................................................................... 139

7.4.2 Replacing an Air Filter................................................................................................................................................... 139

7.4.3 Replacing a Fan............................................................................................................................................................... 141

7.4.4 Replacing a Wet Film Humidifier.............................................................................................................................. 142

7.4.5 Replacing a Differential Pressure Switch................................................................................................................ 144

7.4.6 Replacing a T/H Sensor.................................................................................................................................................146

7.4.7 Replacing a Supply Air Temperature Sensor..........................................................................................................147

7.4.8 Replacing a Water Inlet or Outlet Temperature Sensor.................................................................................... 149

7.4.9 Replacing a Rectifier...................................................................................................................................................... 150

7.4.10 Replacing a Main Control Board............................................................................................................................. 152

7.4.11 Replacing a Water Valve Actuator..........................................................................................................................153

Issue 06 (2022-12-15)

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Table of Contents