Troubleshooting by Indication on the Remote Controller
Si34-603
180
Troubleshooting
3.42
“
U5
”
Malfunction of Transmission between Remote
Controller and Indoor Unit
Remote
Controller
Display
U5
Applicable
Models
AII indoor unit models
Method of
Malfunction
Detection
In case of controlling with 2-remote controller, check the system using microcomputer is 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 indoor unit remote controller transmission
Connection of two main remote controllers (when using 2 remote controllers)
Defect of indoor unit PC board
Defect of remote controller PC board
Malfunction of transmission caused by noise
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(V2823)
NO
YES
YES
NO
Replace indoor unit PC
board.
Set one remote controller to
"SUB"; turn the power supply
off once and then back on.
There is possibility of
malfunction caused by noise.
Check the surrounding area
and turn on again.
NO
NO
Using
2-remote controllers
control.
All indoor
PC board microcomputer
monitors blink.
YES
Multi-core
cableis used for the
indoor unit remote controller
transmission
wiring.
Operation
returns to normal when
the power is turned off
momentarily.
YES
YES
SS1 of
both remote controllers
is set to "MAIN."
NO
Switch to double-core
independent cable.
replacement
Defect of remote controller PC
board or indoor unit PC board.
Replace whichever is
defective.
Summary of Contents for RXMQ4 5 6PVE
Page 11: ...Introduction Si34 603 x...
Page 45: ...Specifications Si34 603 34 Specifications...
Page 56: ...Si34 603 Refrigerant Circuit Refrigerant Circuit 45 C 3D052627A A P G N M D D O H F S E T...
Page 121: ...Field Setting Si34 603 110 Test Operation...
Page 222: ...Si34 603 Wiring Diagrams Appendix 211 2 1 2 Cooling Only RXMQ4 5 6PVE 3D051731C...
Page 223: ...Wiring Diagrams Si34 603 212 Appendix 2 2 Field Wiring RX Y MQ4 5 6PVE 3D052597...
Page 224: ...Si34 603 Wiring Diagrams Appendix 213 2 3 Indoor Unit FXCQ20M 25M 32M 63MVE 3D039556A...
Page 225: ...Wiring Diagrams Si34 603 214 Appendix FXCQ40M 50M 80M 125MVE 3D039557A...
Page 226: ...Si34 603 Wiring Diagrams Appendix 215 FXFQ25M 32M 40M 50M 63M 80M 100M 125MVE 3D039600A...
Page 227: ...Wiring Diagrams Si34 603 216 Appendix FXKQ25MA 32MA 40MA 63MAVE 3D039564C...
Page 230: ...Si34 603 Wiring Diagrams Appendix 219 FXSQ20M 25M 32M 40M 50M 63M 80M 100M 125MVE 3D039561A...
Page 231: ...Wiring Diagrams Si34 603 220 Appendix FXMQ40MA 50MA 63MA 80MA 100MA 125MAVE 3D039620B...
Page 232: ...Si34 603 Wiring Diagrams Appendix 221 FXHQ32MA 63MA 100MAVE 3D039801D...
Page 233: ...Wiring Diagrams Si34 603 222 Appendix FXAQ20MA 25MA 32MAVE 40MA 50MA 63MAVE 3D034206C...
Page 235: ...Wiring Diagrams Si34 603 224 Appendix FXUQ71MA 100MA 125MAV1 3D044973A...
Page 236: ...Si34 603 Wiring Diagrams Appendix 225 BEVQ71MA 100MA 125MAVE 3D044901B...
Page 241: ...Example of Connection Si34 603 230 Appendix...
Page 247: ...Method of Replacing the Inverter s Power Transistors Modules Si34 603 236 Appendix...
Page 262: ...Service Manual R 410A RX Y MQ4 5 6PVE Si34 603 Printed in Japan 07 2006 AK July...