CONTENTS 
Safety Notice on Maintenance ...................................................................................................... 1 
Safety Notice on Operation ........................................................................................................... 2 
1. Product Introduction ................................................................................................................. 3 
1.1 Lists of Units ...................................................................................................................................... 3 
1.2 Electrical Parameters ......................................................................................................................... 9 
2. Control ...................................................................................................................................... 10 
2.1 Operation Mode ............................................................................................................................... 10 
2.2 Control Mode .................................................................................................................................... 11 
2.3 Functions ......................................................................................................................................... 14 
3. Troubleshooting ....................................................................................................................... 26 
3.1 Wiring Diagrams .............................................................................................................................. 26 
3.2 PCB Layout ...................................................................................................................................... 38 
3.3 Error Code ....................................................................................................................................... 53 
3.4 Troubleshooting ............................................................................................................................... 55 
3.5 Failures Not Caused by Errors ......................................................................................................... 89 
4. Maintenance ............................................................................................................................. 91 
4.1 System Diagram .............................................................................................................................. 91 
4.2 Connection Pipe Vacuum Pumping .................................................................................................. 91 
4.3 Refrigerant Charging ........................................................................................................................ 92 
4.4 Maintenance of Major Components .................................................................................................. 94 
4.5 Removal of Major Components ...................................................................................................... 105 
4.6 Explosive View and Lists of Parts ................................................................................................... 152 
Appendices ................................................................................................................................ 212 
1. Resistance/Temperature Lists of Temperature Sensors .................................................... 212 
2. Temperature/Pressure List of Refrigerant ........................................................................... 219 
3. Refrigerant Notice/Concentration ........................................................................................ 219 
4. Operation Tools ..................................................................................................................... 220