SiUS371901E
Symptom-based Troubleshooting
Service Diagnosis
232
1.4
With Optional Infrared Presence/Floor Sensor
Error diagnosis of "Louver operation different from setting"
Condition
Measure
1
"Louver operation different from setting" or "No downward
airflow in heating operation"
Refer to the following table.
2
Individual airflow direction setting different from the actual
airflow direction
· Check the "Louver operation different from setting" error
diagnosis.
3
When in stop control, the louver does not close completely. Turn off the circuit breaker and then turn it on again.
4
The remote controller menu does not display energy saving
operating mode for when people are not present.
Refer to
Infrared Presence/Floor Sensor Error (CE)
on
page 284.
The remote controller menu does not display the stop
function for when people are not present.
The remote controller menu does not display the automatic
draft prevention function.
5
The menu does not display the eco-friendly display function.
No defect.
Set the clock.
6
During cooling and dry operation, the louver automatically
switches from horizontal (P0) to one-level downward (P1).
No defect.
When relative ambient humidity is higher, automatic louver
control will be activated.
7
During heating operation, the use of an airflow block will not
cause other louvers to turn downward (P4).
No defect.
In heating operation, if an airflow block is set, then the air
outlet control outdoor the airflow block will be within the
range P0-P3.
8
When using airflow block, the airflow block will be routinely
lifted (become horizontal) during heating operation.
No defect.
Set louver to horizontal (P0) during thermostat OFF.
9
Although people are not present, the infrared presence
sensor detects human presence.
Check if there are any objects that generate temperature
change when moving.
For example:
· An electric heater with swing function
· Doors, curtains, blind switches
· Output of paper from a fax machine or a printer
· Turning on/off of incandescent lights
· Moving objects
10
Although people are present, the infrared presence sensor
fails to determine their presence.
Check for the following conditions.
· Lack of movement
· Facing away from the sensor
· Little skin exposed
· Slight movement in a place far from the sensor
11
Large difference between floor temperature and actual
temperature
Check for the following conditions.
· Sensor detection zone affected by solar radiation
· High or low temperature objects in the sensor detection zone
· Large difference between floor temperature and
temperature of the living space
· Sensors installed near walls may be affected by wall temperature.
Normal
Reset (Cancel) individual
airflow.
Is the individual
airflow set?
Is the
airflow direction set to
automatic?
Is the
wire harness
broken?
YES
YES
NO
NO
NO
NO
NO
Replace the step motor.
(Motor failure)
YES
Replace the wire harness.
YES
Is the connection
of the step motor
connector normal?
Is the
automatic draft
prevention function
"enabled"?
YES
Normal
Automatic draft
prevention function
switches flap to
horizontal position when
human presence is
detected.
Connect to the connector
correctly before action
verification.
Summary of Contents for REYQ72-456XATJU
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 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 ...
