SiUS04-904ii Table of ContentsSafety Considerations..................................................................viPart 1List of Functions ...................................................................11. Functions.................................................................................................... 2Part 2Specifications .......................................................................41. Specifications ............................................................................................. 51.1 SEER 16 Models ......................................................................................... 51.2 SEER 13 Models ......................................................................................... 8Part 3Printed Circuit BoardConnector Wiring Diagram ..................................................111. Printed Circuit Board Connector Wiring Diagram..................................... 121.1 FTXS09/12HVJU....................................................................................... 121.2 FTXS15/18/24HVJU.................................................................................. 141.3 RXS09/12DAVJU, RX09/12FAVJU........................................................... 161.4 RXS15/18/24DVJU, RX15/18/24FVJU...................................................... 18Part 4Function and Control..........................................................211. Main Functions......................................................................................... 231.1 Frequency Principle................................................................................... 231.2 Power-Airflow Dual Louvers, Wide-Angle Fins and Auto-Swing .............. 241.3 Fan Speed Control for Indoor Units........................................................... 251.4 Program Dry Function ............................................................................... 261.5 Automatic Operation.................................................................................. 271.6 Thermostat Control.................................................................................... 281.7 NIGHT SET Mode ..................................................................................... 291.8 INTELLIGENT EYE ................................................................................... 301.9 HOME LEAVE Operation .......................................................................... 311.10 Inverter POWERFUL Operation ................................................................ 321.11 Other Functions......................................................................................... 332. Function of Thermistor ............................................................................. 353. Control Specification (09/12 Class).......................................................... 363.1 Mode Hierarchy ........................................................................................ 36