Troubleshooting by Error Code
SiUS341615E
231
Service Diagnosis
Troubleshooting
Connect the Service Checker.
Mount a pressure gauge on the
high pressure service port.
Reset the operation, and then
restart the operation.
Stop the relevant indoor units while
the system is in cooling operation,
and then check for the liquid pipe
temperature of these indoor units
after the system is stabilized.
The liquid pipe
temperature is low
(equivalent to the evaporating
temperature).
Clean the air filters
of the indoor units.
NO
YES
NO
Replace the indoor
unit electronic
expansion valve.
Replace the relevant
thermistor.
YES
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Are the
characteristics of the
accumulator inlet thermistor
and the suction pipe
thermistor
normal?
NO
Replace the discharge
pipe thermistor.
Are the
discharge pipe
thermistor characteristics
normal?
YES
NO
Replace the high
pressure sensor.
Are the
high pressure sensor
characteristics
normal?
Service Checker
Use the Service Checker to find indoor units operating under the following
conditions:
&
• Gas pipe temperature (R6T) - Liquid pipe temperature (R4T) < 2.5˚C (4.5˚F)
• Electronic expansion valve opening < 300 pulses
Summary of Contents for RXYQ-TA Series
Page 1: ...Service Manual SiUS341615E RXYQ72 408TAYDU RXYQ72 408TATJU Heat Pump 60 Hz...
Page 321: ...SiUS341615E Wiring Diagrams Appendix 308 RXYQ96 120TAYDU 2D106439A...
Page 322: ...Wiring Diagrams SiUS341615E 309 Appendix RXYQ144 168TAYDU 2D106440A...
Page 323: ...SiUS341615E Wiring Diagrams Appendix 310 RXYQ72TATJU 3D106435A...
Page 324: ...Wiring Diagrams SiUS341615E 311 Appendix RXYQ96 120TATJU 2D106436A...
Page 325: ...SiUS341615E Wiring Diagrams Appendix 312 RXYQ144 168TATJU 2D106437A...
Page 335: ...SiUS341615E Wiring Diagrams Appendix 322 VAM1200GVJU 3D073270C...
Page 336: ...Revision History Month Year Version Revised contents 02 2017 SiUS341615E First edition...
