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Troubleshooting by Error Code
SiAF332111E
220
Part 6 Service Diagnosis
Note(s)
Reference
5.16 Thermistor Abnormality
Applicable
Models
All indoor unit models
Error Code
C4, C5, C9
Method of Error
Detection
The error is determined by the temperature detected by the thermistor.
Error Decision
Conditions
The thermistor becomes disconnected or shorted while the unit is running.
Supposed
Causes
Defective thermistor
Defective indoor unit PCB
Disconnection of connector
Troubleshooting
Error code and thermistor
CHECK 11
Refer to page 350.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Remove the thermistor from
the indoor unit PCB. Then,
insert the connector again.
Remove the thermistor from
the indoor unit PCB, and then
measure the resistance of the
thermistor using a multimeter.
CHECK 11
Normal (The error is caused by
defective contact.)
YES
NO
Replace the indoor unit
control PCB (A1P).
YES
Replace the thermistor.
NO
Does the unit
operate normally?
Normal?
Error Code
Thermistor
Electric Symbol
C4
Indoor heat exchanger liquid pipe thermistor
R2T
C5
Indoor heat exchanger gas pipe thermistor
R3T
C9
Suction air thermistor
R1T
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...