Service Manual
Table Of Contents
- Cover
- Table of contents
- Part 1 List of Functions
- Part 2 Specifications
- Part 3 Printed Circuit Board Connector Wiring Diagram
- Part 4 Refrigerant Circuit
- Part 5 Functions and Control
- Part 6 Test Operation and Field Settings
- Part 7 Remote Controller
- Part 8 Troubleshooting
- 1. Troubleshooting with LED
- 2. Service Diagnosis
- 3. Error Codes and Description
- 4. Troubleshooting for CTXG, CTXS, FTXS, CDXS, FDXS, FVXS Series
- 5. Troubleshooting for FFQ Series
- 6. Troubleshooting for Branch Provider (BP) Unit
- 7. Troubleshooting for Outdoor Unit
- 8. Thermistor Resistance/Temperature Characteristics
- 9. Pressure Sensor
- 10. Method of Replacing Inverter’s Power Transistors Modules
- Part 9 Appendix
SiUS181631EA Indoor Unit
Printed Circuit Board Connector Wiring Diagram 29
Signal Receiver
PCB (PCB2)
Buzzer PCB
(PCB3)
Display PCB
(PCB4)
INTELLIGENT
EYE Sensor PCB
(PCB5)
Note: The symbols in the parenthesis are the names on the appropriate wiring diagram.
1) S29 Connector for control PCB (PCB1)
2) SW1 (S1W) Indoor unit ON/OFF button
SW1
S29
2P290430-1
1) S27 Connector for control PCB (PCB1)
2) S38 Connector for display PCB (PCB4)
3) RTH1 (R1T) Room temperature thermistor
RTH1
S38
S27
2P290430-1
1) S37 Connector for buzzer PCB (PCB3)
2) LED1 (H1P) LED for operation (green)
3) LED2 (H2P) LED for timer (yellow)
4) LED3 (H3P) LED for HOME LEAVE operation (red)
LED2 LED3
S37
LED1
2P290430-1
1) S36 Connector for control PCB (PCB1)
S36
3P099913-1