![background image](http://html1.mh-extra.com/html/daikin/reyq72/reyq72_serveice-manual_4175337195.webp)
Troubleshooting by Indication on the Remote Controller
SiUS39-602
184
Troubleshooting
2.49
“
U8
”
Indoor Unit:
Malfunction of Transmission between
MAIN and SUB Remote Controllers
Remote
Controller
Display
U8
Applicable
Models
All models of indoor units
Method of
Malfunction
Detection
In case of controlling with 2-remote controller, check the system using microcomputer if signal
transmission between indoor unit and remote controller (main and sub) is normal.
Malfunction
Decision
Conditions
Normal transmission does not continue for specified period.
Supposed
Causes
Malfunction of transmission between main and sub remote controller
Connection between sub remote controllers
Defect of remote controller PC board
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(V2825)
SS1
of both remote controllers is
setto "SUB."
Set SS1 to "MAIN"; the
power supply off once and
then back on.
Set one remote controller to
"MAIN"; the power supply
off once and then back on.
Turn the power off and then
back on. If a malfunction
occurs, replace the remote
controller PC board.
YES
YES
YES
NO
NO
NO
Using 2-remote
controllers control.
SS1
of remote controller PC boards
is set to "MAIN."
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...