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 Wiring Diagrams
Appendix 283
FTXS15/18/24LVJU
Note: PCB1: Control PCB
PCB2: Signal receiver PCB
PCB3: Display PCB
PCB4: INTELLIGENT EYE sensor PCB
Refer to Part 3 for Printed Circuit Board Connector Wiring Diagram.
1
FU1
X1M
PCB1
PCB3
S46S49
2
H1
F1U
BLK
11
BLK
1
LED1
3
~
BLK
3.15A
H1P
WHT
OUTDOOR
2
BLK
C102
V1
BLK
LED2
RED
3
H2
MR10
BLK
GRN
H2P
BLK
FIELD WIRING.
BLK
LED3
GRN
C101
BLK
/
H3
YLW
H3P
99
BLK
CAUTION
FG
SW1
S21
FU2
S1
F2U
HA
7
RED
RTH1
BZ
3.15A
R1T
4
BLU
S25
BLK
MS
BRN
11
PCB4
BLK
ORG
S36
1
WHT
3
S41S47 S32
BLK
4
M1F
7216111492531311512816 10 314
BLK
BLK
BLK
BLK
BLK
PNK
PNK
PNK
BLU
BLU
BLU
ORG
ORG
ORG
RED
RED
RED
YLW
YLW
YLW
S48
PCB2
13
INDOOR
R2T
MSW MSWMSW
M1S M2S M3S
NOTE THAT OPERATION WILL RESTART
AUTOMATICALLY IF THE MAIN POWER SUPPLY
IS TURNED OFF AND THEN BACK ON AGAIN.
BZ
C101, C102
FG
F1U, F2U
H1P~H3P
MR10
M1F
M1S~M3S
PCB1~PCB4
R1T, R2T
S1~S49
SW1
V1
X1M
: BUZZER
: CAPACITOR
: FRAME GROUND
: FUSE
: PILOT LAMP
: MAGNETIC RELAY
: FAN MOTOR
: SWING MOTOR
: PRINTED CIRCUIT BOARD
: THERMISTOR
: CONNECTOR
: OPERATION SWITCH
: VARISTOR
: TERMINAL STRIP
: PROTECTIVE GROUND
3~
TRANSMISSION
CIRCUIT
t˚
INTELLIGENT EYE
SENSOR
WIRELESS
REMOTE
CONTROLLER
SIGNAL
RECEIVER
t˚
C: 3D060942S