SiUS331708EA
Troubleshooting by Error Code
Service Diagnosis
218
4.45 Transmission Error (Between Microcomputers on the
Outdoor Main PCB)
Error Code
LC
Applicable
Models
All outdoor units
Method of Error
Detection
Transmission conditions between microcomputers on the outdoor main PCB are tested via
microcomputer.
Error Decision
Conditions
No normal transmission after a certain period of time
Supposed
Causes
Connection error between microcomputers on the outdoor main PCB
Defective outdoor main PCB (Transmission part)
Defective noise filter
External factors (Noise, etc.)
Defective inverter compressor
Defective fan motor
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
YES
NO
Replace the outdoor
main PCB.
Replace the inverter
compressor.
YES
YES
NO
NO
YES
Replace the fan motor.
No
LC
error. Check
the error code again.
NO
Is the outdoor
main PCB
damaged?
Inverter
compressor insulation
resistance is less than
100 k
Ω
.
Fan motor
insulation resistance is
less than 1 M
Ω
.
Normal monitoring
light (green) of outdoor main
PCB (A1P) blinks.
YES
Replace the outdoor
main PCB (A1P).
Normal
monitoring light
(green) of main PCB
blinks.
( )
Keep operating.
Possibly because of
sudden power failure, etc.
NO
Содержание RXSQ24TAVJU
Страница 1: ...Service Manual SiUS331708EA RXSQ24 36 48 60TAVJU Heat Pump 60 Hz...
Страница 289: ...SiUS331708EA Wiring Diagrams Appendix 276 1 Wiring Diagrams 1 1 Outdoor Unit RXSQ24 36TAVJU 3D109545A...
Страница 290: ...Wiring Diagrams SiUS331708EA 277 Appendix RXSQ48TAVJU 3D109546A...
Страница 291: ...SiUS331708EA Wiring Diagrams Appendix 278 RXSQ60TAVJU 3D109547A...
Страница 292: ...Wiring Diagrams SiUS331708EA 279 Appendix 1 2 Indoor Unit FXFQ07 09 12 15 18 24 30 36 48TVJU 3D086460B...
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Страница 295: ...SiUS331708EA Wiring Diagrams Appendix 282 FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Страница 298: ...Wiring Diagrams SiUS331708EA 285 Appendix FXEQ07 09 12 15 18 24PVJU 3D098557A...
Страница 300: ...Wiring Diagrams SiUS331708EA 287 Appendix FXSQ05 07 09 12 15 18 24 30 36 48 54TAVJU 3D110467B...
Страница 301: ...SiUS331708EA Wiring Diagrams Appendix 288 FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B...
Страница 302: ...Wiring Diagrams SiUS331708EA 289 Appendix FXHQ12 24 36MVJU 3D048116C...
Страница 303: ...SiUS331708EA Wiring Diagrams Appendix 290 FXAQ07 09 12 18 24PVJU 3D075354C...
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