Other Control
SiUS371901E
133
Functions and Control
8. Other Control
8.1
Backup Operation
If any of the compressors goes wrong, disable the relevant compressor or the relevant outdoor unit
from operating, and then conduct emergency operation only with operational compressors or
outdoor units.
"Emergency operation with remote controller reset" and "Emergency operation with outdoor unit
PCB setting" are available.
(1) Emergency operation with remote controller reset
Operating method
Reset the remote controller. (Press the
ON/OFF
button for 4 seconds or more.)
Details of operation
Disable the defective outdoor unit from operating temporarily, and then only operate other
outdoor units.
(On the system with 1 outdoor unit, this emergency operation is not available.)
(2) Emergency operation with outdoor unit PCB setting
Setting method
Make setting of the unit, "the operation of which is to be disabled", in field setting mode
(setting mode 2).
Details of operation
Disable the defective outdoor unit from operating, and then only operate other outdoor units.
(On the system with 1 outdoor unit, this emergency operation is not available.)
* This function will work for 72 hours from the moment you set Emergency operation with
outdoor unit PCB setting.
8.2
Demand Operation
In order to limit the power consumption, the capacity of outdoor unit is forcibly reduced by using
“Demand 1 Setting” or “Demand 2 Setting”.
To operate the unit with this mode, additional setting of “Continuous Demand Setting” or
external input by external control adaptor for outdoor unit is required.
Refer to page 207 for the power consumption limitation details.
8.3
Heating Operation Prohibition
Heating operation is prohibited when the outdoor air temperature is above 24°C (75.2°F).
Operating method
Applicable model
(1) Emergency operation with
remote controller reset
(Auto backup operation)
(2) Emergency operation with
outdoor unit PCB setting
(Manual backup operation)
REYQ192-456XATJU
REYQ192-456XAYDU
REYQ192-432XAYCU
Backup operation by outdoor
unit
Backup operation by outdoor
unit
Setting item
Content
Demand 1
The compressor operates at the power of 60-95% or less of the rating.
Demand 2
The compressor operates at the power of 40-55% or less of the rating.
Demand 3
Forced thermostat OFF
Summary of Contents for REYQ-XA
Page 1: ...Service Manual SiUS371901E REYQ72 456XATJU REYQ72 456XAYDU REYQ72 432XAYCU Heat Recovery 60 Hz...
Page 415: ...SiUS371901E Wiring Diagrams Appendix 402 REYQ144 168XATJU 2D119206A...
Page 416: ...Wiring Diagrams SiUS371901E 403 Appendix REYQ72 96 120XAYDU 2D119207B...
Page 417: ...SiUS371901E Wiring Diagrams Appendix 404 REYQ144 168XAYDU 2D119208B...
Page 418: ...Wiring Diagrams SiUS371901E 405 Appendix REYQ72 96 120 144 168XAYCU 2D119209A...
Page 421: ...SiUS371901E Wiring Diagrams Appendix 408 FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Page 423: ...SiUS371901E Wiring Diagrams Appendix 410 FXEQ07 09 12 15 18 24PVJU 3D098557A...
Page 425: ...SiUS371901E Wiring Diagrams Appendix 412 FXSQ05 07 09 12 15 18 24 30 36 48 54TAVJU C 3D110467C...
Page 426: ...Wiring Diagrams SiUS371901E 413 Appendix FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B...
Page 428: ...Wiring Diagrams SiUS371901E 415 Appendix FXHQ12 24 36MVJU 3D048116C...
Page 429: ...SiUS371901E Wiring Diagrams Appendix 416 FXAQ07 09 12 18 24PVJU C 3D075354D...
Page 435: ...SiUS371901E Wiring Diagrams Appendix 422 VAM1200GVJU 3D073270D...
Page 437: ...SiUS371901E Wiring Diagrams Appendix 424 1 4 2 Multi Branch Selector Unit BS4Q54TVJ 3D089123B...
Page 438: ...Wiring Diagrams SiUS371901E 425 Appendix BS6 8Q54TVJ 2D089122B...
Page 439: ...SiUS371901E Wiring Diagrams Appendix 426 BS10 12Q54TVJ 2D089121B...
Page 440: ...Revision History Month Year Version Revised contents 04 2019 SiUS371901E First edition...