SiAF332111E
Troubleshooting by Error Code
Part 6 Service Diagnosis
269
5.43.2 Radiation Fin Temperature Rise Abnormality (6/8 HP Models)
Applicable
Models
RXMQ6/8AR
Error Code
L4
Method of Error
Detection
Detect temperature of power module of the inverter circuit.
Error Decision
Conditions
Thermistor located inside the power module of the inverter circuit for compressor and fan motor.
Cooling tube plate poor heat-exchange.
Supposed
Causes
Radiation fin temperature rise of fan circuit
Cooling tube plate not fixed with screws
U0
error
Defective inverter circuit
High outdoor air temperature
Closed stop valve
Troubleshooting
Subcode L4-01
Defective radiation from the power
unit
• Blocked air suction port
• Stained radiation fin
• High outdoor air temperature
Connect the connector correctly.
Eliminate
P4
error.
Keep operating.
Replace the relevant PCB
(
1).
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Caution
YES
YES
YES
YES
NO
NO
NO
NO
Is the radiation fin
temperature greater than the
designed temperature?
Does the remote
controller display error
code
P4
?
Does the
connector X111A of fin
thermistor connect to the
outdoor unit main PCB
correctly?
When the unit starts
operating, is the error code
L4
displayed again?
Connect to the power and then press
the
INSPECTION/TEST
button on
remote controller.
NO
Open the stop valve.
YES
Is the stop valve open?
Содержание VRV S RXQ4/5ARV1
Страница 1: ...Service Manual Cooling Only 50 60 Hz RXQ4 5ARV1 RXMQ6ARV1 RXMQ8 10 12ARY1 SiAF332111E...
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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...
Страница 371: ...SiAF332111E Wiring Diagrams Part 7 Appendix 365 RXMQ10 12ARY1 3D121610B...
Страница 375: ...SiAF332111E Wiring Diagrams Part 7 Appendix 369 FXMQ40 50 63 80 100ARV1 3D127112 04 59...
Страница 376: ...Wiring Diagrams SiAF332111E 370 Part 7 Appendix 1 2 4 Wall Mounted FXAQ20 25 32PVE FXAQ40 50 63PVER1 C 3D076498B...