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Troubleshooting by Error Code
SiAF332111E
256
Part 6 Service Diagnosis
Note(s)
5.34 Harness Abnormality (between Outdoor Unit Main PCB
and Inverter PCB)
Applicable
Models
RXMQ8-12AR
Error Code
H3
Method of Error
Detection
Check for the transmission conditions of the harnesses between the PCBs (X28A (A1P) and
X6A (A3P)), and relay connector, if any, using microcomputer.
Error Decision
Conditions
When normal transmission between PCBs is disabled during the compressor stops running.
Supposed
Causes
Defective connection of harnesses between PCBs
Defective outdoor unit main PCB
Defective inverter PCB
Troubleshooting
1. A3P
Check for the transmission
conditions of the jumpers
between the PCBs.
Replace the outdoor unit main
PCB.
Replace the inverter PCB. (
1)
YES
NO
YES
Complete countermeasures.
Return the relevant harness to
normal.
NO
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Harness error
H3
error recurs.
Summary of Contents for VRV S RXQ4/5ARV1
Page 1: ...Service Manual Cooling Only 50 60 Hz RXQ4 5ARV1 RXMQ6ARV1 RXMQ8 10 12ARY1 SiAF332111E...
Page 369: ...SiAF332111E Wiring Diagrams Part 7 Appendix 363 RXMQ6ARV1 C 3D137051...
Page 370: ...Wiring Diagrams SiAF332111E 364 Part 7 Appendix RXMQ8ARY1 C 3D137060...
Page 371: ...SiAF332111E Wiring Diagrams Part 7 Appendix 365 RXMQ10 12ARY1 3D121610B...
Page 375: ...SiAF332111E Wiring Diagrams Part 7 Appendix 369 FXMQ40 50 63 80 100ARV1 3D127112 04 59...