Specifications
Table Of Contents
- Cover
- Table of Contents
- Part 1 General Information
- Part 2 Specifications
- Part 3 Refrigerant Circuit
- Part 4 Function
- Part 5 Test Operation
- Part 6 Troubleshooting
- Part 7 Appendix
- 1. Piping Diagrams
- 2. Wiring Diagrams for Reference
- 3. List of Electrical and Functional Parts
- 4. Option List
- 5. Piping Installation Point
- 6. Example of connection (R-410A Type)
- 7. Thermistor Resistance / Temperature Characteristics
- 8. Pressure Sensor
- 9. Method of Checking the Inverter’s Power Transistors and Diode Modules
- Part 8 Precautions for New Refrigerant (R-410A)
- Index
- Drawings & Flow Charts

Si34-704
ii Table of Contents
3. Special Control......................................................................................99
3.1 Startup Control .......................................................................................99
3.2 Oil Return Operation ............................................................................100
3.3 Pump-down Residual Operation ..........................................................101
3.4 Standby ................................................................................................102
3.5 Stopping Operation ..............................................................................103
4. Protection Control ...............................................................................105
4.1 High Pressure Protection Control.........................................................105
4.2 Low Pressure Protection Control..........................................................106
4.3 Discharge Pipe Protection Control .......................................................107
4.4 Inverter Protection Control ...................................................................108
4.5 STD Compressor Overload Protection.................................................109
4.6 Injection Control (only for RXQ5P) .......................................................109
5. Other Control.......................................................................................110
5.1 Outdoor Unit Rotation...........................................................................110
5.2 Emergency Operation ..........................................................................111
5.3 Demand Operation ...............................................................................115
6. Outline of Control (Indoor Unit) ...........................................................116
6.1 Drain Pump Control..............................................................................116
6.2 Louver Control for Preventing Ceiling Dirt............................................118
6.3 Thermostat Sensor in Remote Controller.............................................119
6.4 Thermostat Control while in Normal Operation ....................................120
6.5 Thermostat Control in Dry Operation ...................................................120
6.6 Electronic Expansion Valve Control .....................................................121
6.7 Freeze Prevention ................................................................................122
6.8 List of Swing Flap Operations ..............................................................123
6.9 Control of Outdoor Air Processing Unit
(Unique Control for Outdoor Air Processing Unit) ................................124
Part 5 Test Operation ............................................................... 127
1. Test Operation ....................................................................................128
1.1 Installation Process ..............................................................................128
1.2 Procedure and Outline .........................................................................129
1.3 Operation when Power is Turned On ...................................................143
2. Outdoor Unit PC Board Layout ...........................................................144
3. Field Setting ........................................................................................145
3.1 Field Setting from Remote Controller ...................................................145
3.2 Field Setting from Outdoor Unit............................................................157
Part 6 Troubleshooting ............................................................. 177
1. Symptom-based Troubleshooting .......................................................179
2. Troubleshooting by Remote Controller ...............................................182
2.1 The INSPECTION / TEST Button.........................................................182
2.2 Self-diagnosis by Wired Remote Controller .........................................183
2.3 Self-diagnosis by Wireless Remote Controller .....................................184
2.4 Operation of the Remote Controller’s Inspection /
Test Operation Button ..........................................................................187
2.5 Remote Controller Service Mode .........................................................188
2.6 Remote Controller Self-Diagnosis Function .........................................190