SiUS39-601
Troubleshooting by Indication on the Remote Controller
Troubleshooting
157
2.30
“
J9
”
Malfunction of Sub-Cooling Gas Pipe Thermistor (R5T)
Remote
Controller
Display
J9
Applicable
Models
RXYQ72M, 96M
Method of
Malfunction
Detection
Malfunction is detected according to the temperature detected by Sub Cooling gas pipe thermistor.
Malfunction
Decision
Conditions
When the Sub Cooling gas pipe thermistor is short circuited or open.
Supposed
Causes
Faulty Sub Cooling gas pipe thermistor (R5T)
Faulty outdoor unit PC board
Troubleshooting
∗
1: Refer to thermistor resistance / temperature characteristics table on P239.
(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
gas pipe thermistor
connected to X37A on
outdoor unit PC
board (A1P)?
Summary of Contents for RXYQ72
Page 115: ...Field Setting SiUS39 601 104 Test Operation...
Page 227: ...Troubleshooting OP Unified ON OFF Controller SiUS39 601 216 Troubleshooting...
Page 231: ...Piping Diagrams SiUS39 601 220 Appendix 1 Piping Diagrams 1 1 Outdoor Unit RXYQ72M 96M...
Page 236: ...SiUS39 601 Wiring Diagrams for Reference Appendix 225 RXYQ144 168 192MTJU C 3D050353A...
Page 249: ...Example of Connection SiUS39 601 238 Appendix...
Page 255: ...Method of Replacing The Inverter s Power Transistors and Diode Modules SiUS39 601 244 Appendix...
Page 265: ...Precautions for New Refrigerant R 410A SiUS39 601 254 Precautions for New Refrigerant R 410A...
Page 269: ...SiUS39 601 iv Index...
