SiUS39-602
Troubleshooting by Indication on the Remote Controller
Troubleshooting
165
2.34
“
L4
”
Outdoor Unit:
Malfunction of Inverter Radiating Fin
Temperature Rise
Remote
Controller
Display
L4
Applicable
Models
REYQ72M, 96M
Method of
Malfunction
Detection
Fin temperature is detected by the thermistor of the radiation fin.
Malfunction
Decision
Conditions
When the temperature of the inverter radiation fin increases above 192°F.
Supposed
Causes
Actuation of fin thermal (Actuates above 192°F)
Defect of inverter PC board
Defect of fin thermistor
Troubleshooting
∗
1: Refer to thermistor resistance / temperature characteristics table on P.239.
(V2811)
Resistance
check of the radiator fin
thermistor
∗
1
Defect of power unit radiation.
•
Intake port is clogged
•
Radiator fin is dirty
•
Outdoor temperature is high
NO
Replace the thermistor.
YES
Abnormal
Is reset possible?
Reset and operate.
Normal
Replace the inverter PC board
NO
YES
Temperature
of the radiator fin rises.
Actuates at min.
192 ˚F
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Summary of Contents for REYQ72
Page 35: ...Specifications SiUS39 602 24 Specifications...
Page 121: ...Field Setting SiUS39 602 110 Test Operation...
Page 129: ...Troubleshooting by Remote Controller SiUS39 602 118 Troubleshooting...
Page 225: ...Troubleshooting OP Unified ON OFF Controller SiUS39 602 214 Troubleshooting...
Page 232: ...SiUS39 602 Piping Diagrams Appendix 221 1 3 BS Unit BSVQ36MVJU BSVQ60MVJU 4D045338...
Page 235: ...Wiring Diagrams for Reference SiUS39 602 224 Appendix REYQ144 168 192MTJU C 3D050354A...
Page 240: ...SiUS39 602 Wiring Diagrams for Reference Appendix 229 2 4 BS Unit BSVQ36M 60MVJU 3D045069A...
Page 249: ...Example of Connection R 410A Type SiUS39 602 238 Appendix...
Page 255: ...Method of Replacing The Inverter s Power Transistors and Diode Modules SiUS39 602 244 Appendix...
Page 265: ...Precautions for New Refrigerant R 410A SiUS39 602 254 Precautions for New Refrigerant R 410A...
Page 269: ...SiUS39 602 iv Index...