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SiAF332111E
Troubleshooting by Error Code
Part 6 Service Diagnosis
289
5.52 Radiation Fin Temperature Abnormality
Applicable
Models
RXQ4/5AR, RXMQ6/8AR
Error Code
P4
Method of Error
Detection
Detect the resistance of the following thermistors during the compressor stops running:
(1) Radiation fin thermistor
(2) Thermistor located in PCB circuit
Error Decision
Conditions
When the resistance of the thermistor comes to a value equivalent to open or short circuit.
Error is not decided while the unit operation is continued.
P4
will be displayed by pressing the inspection button.
Supposed
Causes
Defective radiation fin temperature thermistor
Defective outdoor unit main PCB (RXQ4/5AR, RXMQ6AR)
Defective inverter PCB (RXMQ8AR)
Defective fan PCB (RXMQ8AR)
Defective compressor
Defective fan motor
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...