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Troubleshooting by Indication on the Remote Controller
SiUS39-602
162
Troubleshooting
2.31
“
J9
”
Malfunction of Sub-cooling Heat Exchanger Gas
Pipe Thermistor (R5T)
Remote
Controller
Display
J9
Applicable
Models
REYQ72M, 96M
Method of
Malfunction
Detection
Malfunction is detected according to the temperature detected by sub-cooling heat exchanger
gas pipe thermistor.
Malfunction
Decision
Conditions
When the sub-cooling heat exchanger gas pipe thermistor is short circuited or open.
Supposed
Causes
Faulty sub-cooling heat exchanger gas pipe thermistor (R5T)
Faulty outdoor unit PC board
Troubleshooting
∗
1: Refer to thermistor resistance / temperature characteristics table on P.239.
(V3075)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is the
resistance
measured after
removing the thermistor
(R5T) from outdoor unit PC
board normal?
(3.5 k
Ω
to
360 k
Ω
)
∗
1
Replace outdoor unit PC board
(A1P).
Connect thermistor and operate
unit again.
NO
NO
Replace thermistor (R5T).
YES
YES
Is
the connector
for sub-cooling heat
exchanger gas pipe
thermistor connected to
X37A on outdoor
unit PC board
(A1P)?
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...