SiBE041029ECTable of Contents ii1. Safety Cautions.......................................................................................v1.1 Warnings and Cautions Regarding Safety of Workers.............................v1.2 Warnings and Cautions Regarding Safety of Users............................... vii2. Used Icons ..............................................................................................xPart 1 List of Functions ................................................................ 11. Functions.................................................................................................2Part 2 Specifications .................................................................... 31. Specifications ..........................................................................................4Part 3 Printed Circuit Board Connector Wiring Diagram ........... 111. Indoor Unit.............................................................................................122. Outdoor Unit..........................................................................................142.1 RX50/60G2V1B, 71 Class......................................................................142.2 RX50/60G2V1B9, RX50/60G3V1B, RX60G4V1B..................................16Part 4 Function and Control........................................................ 181. Main Functions......................................................................................191.1 Temperature Control ..............................................................................191.2 Frequency Principle................................................................................191.3 Airflow Direction Control.........................................................................211.4 Fan Speed Control for Indoor Unit .........................................................221.5 Program Dry Operation ..........................................................................231.6 Automatic Operation...............................................................................241.7 Thermostat Control.................................................................................251.8 NIGHT SET Mode ..................................................................................261.9 HOME LEAVE Operation .......................................................................261.10 INTELLIGENT EYE Operation ...............................................................281.11 Inverter POWERFUL Operation .............................................................291.12 Clock Setting ..........................................................................................291.13 Other Functions......................................................................................302. Function of Thermistor ..........................................................................313. Control Specification .............................................................................323.1 Mode Hierarchy ......................................................................................323.2 Frequency Control..................................................................................333.3 Controls at Mode Changing / Start-up....................................................353.4 Discharge Pipe Temperature Control.....................................................373.5 Input Current Control..............................................................................383.6 Freeze-up Protection Control .................................................................393.7 Heating Peak-cut Control .......................................................................393.8 Outdoor Fan Control...............................................................................403.9 Liquid Compression Protection Function................................................403.10 Defrost Control .......................................................................................413.11 Electronic Expansion Valve Control .......................................................423.12 Malfunctions ...........................................................................................45