Contents 
1 Safety Notices (Please be sure to abide)............................................................. 1 
2 Product Introduction ............................................................................................ 3 
2.1 Names of Key Components ..................................................................................... 3 
2.2 Rated Working Condition ......................................................................................... 3 
3 Preparations for Installation ................................................................................. 4 
3.1 Standard Fittings ...................................................................................................... 4 
3.2 Installation Position Selection ................................................................................... 5 
3.3 Requirements of Communication Wire Selection ..................................................... 6 
3.4 Wiring Requirement ................................................................................................. 7 
4 Installation Instructions ........................................................................................ 8 
4.1 Indoor Unit Installation ............................................................................................. 8 
4.2 Refrigerant Pipe Connection .................................................................................. 11 
4.3 Drainage Pipe Installation and Drainage System Testing ....................................... 11 
4.4 Wired Controller Installation ................................................................................... 14 
5 Wiring Work ....................................................................................................... 14 
5.1 Connection of Wire and Patch Board Terminal ....................................................... 15 
5.2 Power Cord Connection ......................................................................................... 15 
5.3 Connection of Communication Wire between Indoor Unit and Outdoor Unit (or 
Indoor Unit) .................................................................................................................. 16
 
5.4 Connection of Communication Wire for Wired Controller........................................ 17 
5.5 Wiring Instructions of Wired Controller and Indoor Units Network .......................... 18 
6 Routine Maintenance ......................................................................................... 19 
6.1 Cleaning of Filter .................................................................................................... 19 
6.2 Maintenance before the Seasonal Use ................................................................... 19 
6.3 Maintenance after the Seasonal Use ..................................................................... 19 
7 Table of Error Codes for Indoor Unit .................................................................. 20 
8 Troubleshooting ................................................................................................. 21