Troubleshooting Guide

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.......................................................................................................................................... 5
2. Control
........................................................................................................................................................
6
2.1 Operation Mode....................................................................................................................................................6
2.2 Control Mode........................................................................................................................................................ 8
2.3 Functions
.............................................................................................................................................................
10
3. Troubleshooting
.....................................................................................................................................
14
3.1 Wiring Diagrams.................................................................................................................................................14
3.2 PCB Layout
.........................................................................................................................
...............................17
3.3 Error Code...........................................................................................................................................................26
3.4 Troubleshooting
..................................................................................................................
..............................27
3.5 Failures Not Caused by Errors........................................................................................................................ 27
4. Maintenance
............................................................................................................................................
55
4.1 System Diagram.................................................................................................................................................55
4.2 Connection Pipe Vacuum Pumping................................................................................................................ 55
4.3 Refrigerant Charging.........................................................................................................................................57
4.4 Maintenance of Major Components................................................................................................................59
4.5 Removal of Major Components.......................................................................................................................69
4.6 Explosive View and Lists of Parts................................................................................................................. 103
Appendices
................................................................................................................................................
109
1. Resistance/Temperature Lists of Temperature Sensors
...........................................................
109
1.1 Voltage List of 15 kΩ Temperature Sensors (including ODU and IDU temperature sensors).............109
1.2 Voltage List of 20 kΩ Pipeline Temperature Sensors (including temperature sensors for defroster, IDU
and ODU pipes)...................................................................................................................................................... 111
1.3 Voltage List of 50 kΩ Discharge Temperature Sensors (including discharge air temperature sensor)
...................................................................................................................................................................................113
2. Temperature/Pressure List of Refrigerant
.....................................................................................
116
3. Refrigerant Notice/Concentration
...................................................................................................
116
4. Operation Tools
....................................................................................................................................
116