Symptom-based Troubleshooting
SiUS371901E
229
Service Diagnosis
Symptom
Supposed Cause
Countermeasure
6
COOL/HEAT
selection is
disabled.
The remote controller displays
UNDER CENTRALIZED
CONTROL.
This remote controller has no option
to select cooling operation.
Use a remote controller with option
to select cooling operation.
The remote controller displays
UNDER CENTRALIZED
CONTROL
, and the COOL/
HEAT selection remote
controller is provided.
COOL/HEAT selection is made
using the COOL/HEAT selection
remote controller.
Use the COOL/HEAT selection
remote controller to select cool or
heat.
7
The system
conducts fan
operation but not
cooling or
heating
operation.
This symptom occurs
immediately after turning ON
the power supply.
The system is in preparation mode
of operation.
Wait for a period of approximately
10 minutes.
The remote controller displays
UNDER CENTRALIZED
CONTROL
; no cooling or
heating operation is performed.
Switch to fan operation.
In thermal storage operation, the
unit is set to fan operation in cooling
or heating operation, and the
remote controller shows
CENTRALIZED CONTROL
.
Normal operation.
8
The airflow rate
is not
reproduced
according to the
setting.
Even pressing the airflow rate
setting button makes no
changes in the airflow rate.
In heating operation, when the room
temperature reaches the set
degree, the outdoor unit will stop
while the indoor unit is brought to
fan LL operation so that no one gets
cold air.
Furthermore, if fan operation mode
is selected when other indoor unit is
in heating operation, the system will
be brought to fan LL operation.
Normal operation.
9
The airflow
direction is not
reproduced
according to the
setting.
The airflow direction is not
corresponding to that
displayed on the remote
controller.
The flap does not swing.
Automatic control
Normal operation.
10 A white mist
comes out from
the system.
Indoor unit
In cooling operation, the
ambient humidity is high.
(This indoor unit is installed in
a place with much oil or dust.)
Uneven temperature distribution
due to heavy stain of the inside of
the indoor unit
Clean the inside of the indoor unit.
Indoor unit
Immediately after cooling
operation stopping, the
ambient temperature and
humidity are low.
Hot gas (refrigerant) that has flowed
in the indoor unit results to be vapor
from the unit.
Normal operation.
Indoor and outdoor units
After the completion of defrost
operation, the system is
switched to heating operation.
Defrosted moisture turns to be
vapor and comes out from the units.
Normal operation.
Содержание REYQ-XA
Страница 1: ...Service Manual SiUS371901E REYQ72 456XATJU REYQ72 456XAYDU REYQ72 432XAYCU Heat Recovery 60 Hz...
Страница 414: ...Wiring Diagrams SiUS371901E 401 Appendix 1 Wiring Diagrams 1 1 Outdoor Unit REYQ72 96 120XATJU 2D119205A...
Страница 415: ...SiUS371901E Wiring Diagrams Appendix 402 REYQ144 168XATJU 2D119206A...
Страница 416: ...Wiring Diagrams SiUS371901E 403 Appendix REYQ72 96 120XAYDU 2D119207B...
Страница 417: ...SiUS371901E Wiring Diagrams Appendix 404 REYQ144 168XAYDU 2D119208B...
Страница 418: ...Wiring Diagrams SiUS371901E 405 Appendix REYQ72 96 120 144 168XAYCU 2D119209A...
Страница 419: ...SiUS371901E Wiring Diagrams Appendix 406 1 2 Indoor Unit FXFQ07 09 12 15 18 24 30 36 48TVJU 3D086460B...
Страница 420: ...Wiring Diagrams SiUS371901E 407 Appendix BYCQ125BGW1 Self Cleaning Decoration Panel for FXFQ TVJU 3D076375A...
Страница 421: ...SiUS371901E Wiring Diagrams Appendix 408 FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Страница 423: ...SiUS371901E Wiring Diagrams Appendix 410 FXEQ07 09 12 15 18 24PVJU 3D098557A...
Страница 425: ...SiUS371901E Wiring Diagrams Appendix 412 FXSQ05 07 09 12 15 18 24 30 36 48 54TAVJU C 3D110467C...
Страница 426: ...Wiring Diagrams SiUS371901E 413 Appendix FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B...
Страница 428: ...Wiring Diagrams SiUS371901E 415 Appendix FXHQ12 24 36MVJU 3D048116C...
Страница 429: ...SiUS371901E Wiring Diagrams Appendix 416 FXAQ07 09 12 18 24PVJU C 3D075354D...
Страница 434: ...Wiring Diagrams SiUS371901E 421 Appendix 1 3 2 Energy Recovery Ventilator VAM Series VAM300 470 600GVJU 3D073269D...
Страница 435: ...SiUS371901E Wiring Diagrams Appendix 422 VAM1200GVJU 3D073270D...
Страница 437: ...SiUS371901E Wiring Diagrams Appendix 424 1 4 2 Multi Branch Selector Unit BS4Q54TVJ 3D089123B...
Страница 438: ...Wiring Diagrams SiUS371901E 425 Appendix BS6 8Q54TVJ 2D089122B...
Страница 439: ...SiUS371901E Wiring Diagrams Appendix 426 BS10 12Q54TVJ 2D089121B...
Страница 440: ...Revision History Month Year Version Revised contents 04 2019 SiUS371901E First edition...