SiUS342303E
Troubleshooting by Error Code
Part 6 Service Diagnosis
268
Reference
3.16 Electronic Expansion Valve Coil Abnormality, Dust
Clogging
Applicable
Models
All indoor unit models
Error Code
A9
Method of Error
Detection
Check coil condition of electronic expansion valve by using microcomputer.
Check dust clogging condition of electronic expansion valve main body by using microcomputer.
Error Decision
Conditions
Pin input for electronic expansion valve coil is abnormal when initializing microcomputer.
Either of the following conditions is seen/caused/occurs while the unit stops operation.
R1T – R2T > 8°C (14.4°F)
R2T shows fixed degrees or below.
R1T: temperature of suction air
R2T: temperature of liquid pipe of heat exchanger
Supposed
Causes
Defective electronic expansion valve coil
Defective indoor unit control PCB
Defective relay cables
Troubleshooting
CHECK 18
Refer to page 390.
NO
YES
Error
code is displayed
when power is supplied
to the indoor
unit?
NO
Electronic
expansion valve is
connected to X7A of
indoor unit control
PCB.
NO
Check
of electronic
expansion valve coil
indicates normal.
NO
YES
YES
YES
Relay
cables short circuit or
disconnected.
When restarting the operation
after shutting the power supply
OFF does not work, replace the
indoor unit control PCB (A1P).
Replace the relay cables.
Replace the electronic
expansion valve coil (Y1E).
Shut the power supply OFF
after connection and then
restart.
Replace the electronic
expansion valve main body.
CHECK 18
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Содержание VRV EMERION RXYQ-AATJA
Страница 1: ...Service Manual Heat Pump 60 Hz RXYQ AATJA 208 230 V RXYQ AAYDA 460 V SiUS342303E...
Страница 380: ...Check SiUS342303E 373 Part 6 Service Diagnosis Reference Reference CHECK 7 Refer to page 379 CHECK 8 Refer to page 380...
Страница 405: ...SiUS342303E Wiring Diagrams Part 7 Appendix 398 RXYQ72 96 120 144 168 192 216 240AAYDA C 2D140769B...
Страница 406: ...Wiring Diagrams SiUS342303E 399 Part 7 Appendix 1 2 Indoor Unit FXFQ07 09 12 15 18 24 30 36 48TVJU 3D086460B...
Страница 407: ...SiUS342303E Wiring Diagrams Part 7 Appendix 400 BYCQ125BGW1 Self Cleaning Decoration Panel for FXFQ TVJU 3D076375A...
Страница 410: ...Wiring Diagrams SiUS342303E 403 Part 7 Appendix FXEQ07 09 12 15 18 24PVJU 3D098557A...
Страница 411: ...SiUS342303E Wiring Diagrams Part 7 Appendix 404 FXDQ07 09 12 18 24MVJU C 3D050501C...
Страница 413: ...SiUS342303E Wiring Diagrams Part 7 Appendix 406 FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B...
Страница 416: ...Wiring Diagrams SiUS342303E 409 Part 7 Appendix FXHQ12 24 36MVJU 3D048116C...
Страница 417: ...SiUS342303E Wiring Diagrams Part 7 Appendix 410 FXAQ07 09 12 18 24PVJU 3D075354F...
Страница 423: ...SiUS342303E Wiring Diagrams Part 7 Appendix 416 1 3 2 Energy Recovery Ventilator VAM Series VAM300 470 600GVJU 3D073269D...
Страница 424: ...Wiring Diagrams SiUS342303E 417 Part 7 Appendix VAM1200GVJU 3D073270D...