SiME341909EA
Troubleshooting by Error Code
Part 6 Service Diagnosis
227
5.44 Transmission Error between Inverter PCB and Outdoor
Unit Main PCB
Applicable
Models
All outdoor unit models
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 reactor
Defective compressor
Defective fan motor
Troubleshooting
Properly connect the harness.
NO
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Is the harness
between terminal
block and noise filter PCB
securely connected?
(
∗
1)
Properly connect the harness.
NO
Is the harness
between noise filter
PCB and inverter PCB
securely connected?
(
∗
1)
YES
Properly connect the harness.
NO
Is the harness
between reactor and
inverter PCB securely
connected? (
∗
1)
YES
YES
Properly connect the connector.
NO
Is the
connector between
main PCB and each inverter
PCB securely
connected?
(
∗
1)
A
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Summary of Contents for VRV X RXQ6-48ANR Series
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Page 289: ...SiME341909EA Wiring Diagrams Part 7 Appendix 283 RXQ10 12ARYFK 2D124184...
Page 290: ...Wiring Diagrams SiME341909EA 284 Part 7 Appendix RXQ14 16ARYFK 2D124183...
Page 295: ...SiME341909EA Wiring Diagrams Part 7 Appendix 289 FXMQ40 50 63 80 100ARV1 3D127112 04 59...