SiAF332111E
Troubleshooting by Error Code
Part 6 Service Diagnosis
283
5.48 Transmission Error between Inverter PCB and Outdoor
Unit Main PCB
Applicable
Models
RXMQ8-12AR
Error Code
LC
Method of Error
Detection
Check for the transmission conditions between the inverter PCB and the outdoor unit main PCB
using a microcomputer.
Error Decision
Conditions
Normal transmission is disabled for a given period of time or more.
Supposed
Causes
Defective connection between the inverter PCB and the outdoor unit main PCB
Defective outdoor unit main PCB (transmission block)
Defective noise filter
External factors (e.g. noise)
Defective compressor
Defective fan motor
Troubleshooting
Does the
inverter PCB part No.
match that of the spare
parts list?
Replace with a proper PCB.
NO
Properly connect the connector.
NO
YES
Replace the fan motor (
2).
YES
NO
The insulation
resistance of the
compressor is less
than 100 k
.
The insulation
resistance of the fan motor
(
2) is less than
1 M
Replace the compressor (M1C).
YES
NO
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Is the
connector
between outdoor unit
main PCB and inverter PCB
securely connected?
(
1)
A
Go to the next page.
Содержание VRV S RXMQ10ARY1
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Страница 366: ...SiAF332111E 360 Part 7 Appendix 1 Wiring Diagrams 361 1 1 Outdoor Unit 361 1 2 VRV Indoor Unit 366 Part 7 Appendix...
Страница 369: ...SiAF332111E Wiring Diagrams Part 7 Appendix 363 RXMQ6ARV1 C 3D137051...
Страница 370: ...Wiring Diagrams SiAF332111E 364 Part 7 Appendix RXMQ8ARY1 C 3D137060...
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Страница 376: ...Wiring Diagrams SiAF332111E 370 Part 7 Appendix 1 2 4 Wall Mounted FXAQ20 25 32PVE FXAQ40 50 63PVER1 C 3D076498B...