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4.9 Wiring Diagram ...............................................................................................................74
4.10 Wiring of the Terminal Board ........................................................................................80
4.11 Wiring of the 2-Way Valve .............................................................................................80
4.12 Wiring of the 3-Way Valve .............................................................................................81
4.13 Wiring of Other Auxiliary Heat Sources .........................................................................82
4.14 Wiring of the Gate-Controller ........................................................................................82
4.15 Wiring of the Remote Air Temperature Sensor .............................................................82
4.16 Wiring of the Thermostat ...............................................................................................83
4.17 Wiring of the Control .....................................................................................................84
1.2 Check for the Water System
...........................................................................................89
1.3 Check for the Communication System
............................................................................90
2 Error Code List .........................................................................................................91
3 Flow Chart of Troubleshooting ...............................................................................93
3.1 Compressor High-pressure Protection E1 ......................................................................93
3.2 Compressor Low- pressure Protection E3 .....................................................................94
3.3 Compressor Discharge Temp Protection E4 ...................................................................94
3.4 Overload Protection of Compressor or Driver Error ........................................................95
3.5 DC Fan Error EF .............................................................................................................95
3.6 Temperature Sensor Error ..............................................................................................96
3.7 Communication Malfunction E6 ......................................................................................96
3.8 Capacity Switch Error (Code:"E5") .................................................................................97
4.1 Diagnosis Flowchart of Drive of Single-phase Unit and Three-phase Unit .....................97
5.1 Daily Maintenance ........................................................................................................101
5.2 Troubleshooting ............................................................................................................101
5.3 Repair ...........................................................................................................................102