
Troubleshooting by Error Codes
SiUS281811EA
268
Part 6 Service Diagnosis
4.40 Radiation Fin Temperature Rise Abnormality
Error Code
L4
Applicable
Models
All outdoor units
Method of Error
Detection
The radiation fin temperature is detected by the radiation fin thermistor.
Error Decision
Conditions
The radiation fin temperature exceeds a certain temperature.
Supposed
Causes
Activation of radiation fin thermistor
Defective outdoor main PCB
Defective radiation fin thermistor
Troubleshooting
Defective radiation from the power
unit
• Blocked air suction port
• Stained radiation fin
• High outdoor air temperature
Connect correctly.
Go to
P4
troubleshooting.
Keep operating.
Replace the outdoor main
PCB (A1P).
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 radiator 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 PCB
correctly?
When the unit starts
operating, is the error code
L4
displayed again?
Connect to the power.
Содержание SkyAir RZR-TA Series
Страница 1: ...Service Manual Cooling Only 60 Hz Heat Pump 60 Hz RZR TA RZQ TA Series SiUS281811EA...
Страница 202: ...SiUS281811EA 196 Part 6 Service Diagnosis 5 15 Fan Motor Connector Check for FTQ TA 311...
Страница 321: ...SiUS281811EA 315 Part 7 Appendix 1 Wiring Diagrams 316 1 1 Outdoor Unit 316 1 2 Indoor Unit 320 Part 7 Appendix...
Страница 322: ...Wiring Diagrams SiUS281811EA 316 Part 7 Appendix 1 Wiring Diagrams 1 1 Outdoor Unit RZR18 24TAVJU RZQ18 24TAVJU 3D115455...
Страница 323: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 317 RZR18 24TAVJUA RZQ18 24TAVJUA 3D124495...
Страница 324: ...Wiring Diagrams SiUS281811EA 318 Part 7 Appendix RZR30 36 42 48TAVJU RZQ30 36 42 48TAVJU 3D115456...
Страница 325: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 319 RZR30 36 42 48TAVJUA RZQ30 36 42 48TAVJUA 3D124500...
Страница 326: ...Wiring Diagrams SiUS281811EA 320 Part 7 Appendix 1 2 Indoor Unit FCQ18 24 30 36 42 48TAVJU 3D115647A...
Страница 327: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 321 FHQ18 24 30PVJU FHQ36 42MVJU 3D048116C...
Страница 328: ...Wiring Diagrams SiUS281811EA 322 Part 7 Appendix FAQ18 24TAVJU 3D114844B...
Страница 329: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 323 FBQ18 24 30 36 42 48PVJU 3D065984J...