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Troubleshooting by Error Codes
SiUS281811EA
272
Part 6 Service Diagnosis
4.44 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 SkyAir RZR-TA Series
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Страница 202: ...SiUS281811EA 196 Part 6 Service Diagnosis 5 15 Fan Motor Connector Check for FTQ TA 311...
Страница 321: ...SiUS281811EA 315 Part 7 Appendix 1 Wiring Diagrams 316 1 1 Outdoor Unit 316 1 2 Indoor Unit 320 Part 7 Appendix...
Страница 322: ...Wiring Diagrams SiUS281811EA 316 Part 7 Appendix 1 Wiring Diagrams 1 1 Outdoor Unit RZR18 24TAVJU RZQ18 24TAVJU 3D115455...
Страница 323: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 317 RZR18 24TAVJUA RZQ18 24TAVJUA 3D124495...
Страница 324: ...Wiring Diagrams SiUS281811EA 318 Part 7 Appendix RZR30 36 42 48TAVJU RZQ30 36 42 48TAVJU 3D115456...
Страница 325: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 319 RZR30 36 42 48TAVJUA RZQ30 36 42 48TAVJUA 3D124500...
Страница 326: ...Wiring Diagrams SiUS281811EA 320 Part 7 Appendix 1 2 Indoor Unit FCQ18 24 30 36 42 48TAVJU 3D115647A...
Страница 327: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 321 FHQ18 24 30PVJU FHQ36 42MVJU 3D048116C...
Страница 328: ...Wiring Diagrams SiUS281811EA 322 Part 7 Appendix FAQ18 24TAVJU 3D114844B...
Страница 329: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 323 FBQ18 24 30 36 42 48PVJU 3D065984J...