SiUS39-602
Troubleshooting (OP: Unified ON/OFF Controller)
Troubleshooting
207
Troubleshooting
(V2841)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is the
power supply for
the indoor unit displaying
a malfunction
turned
on?
Is
transmission wiring
disconnected or wired
incorrectly?
Is the
transmission
wiring with the master
controller disconnected or
wired incorrectly?
Is the
master
controller's connector for
setting master controller
disconnected.
Set the group No.
correctly.
Replace indoor unit PC board.
Fix the wiring correctly.
Fix the wiring correctly.
Connect the connector
correctly.
Replace the central PC board.
Reset power supply for all
optional controllers for
centralized control
simultaneously.
NO
YES
NO
YES
YES
NO
YES
Turn the power supply of the
indoor unit on.
YES
NO
NO
YES
NO
YES
NO
Has a
once connected
indoor unit been removed
or its address
changed?
Diagnose the cause with the
air conditioner's failure
diagnosis manual.
NO
YES
Is a
malfunction
code displayed on the
remote controller?
Is
the group
No. of malfunctioning
indoor units
set?
Is
transmission
with all indoor units
malfunctioning?
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...