With Optional Infrared Presence/Floor Sensor - Daikin REYQ-XA Service Manual

SiUS371901E
1.4

With Optional Infrared Presence/Floor Sensor

1 "Louver operation different from setting" or "No downward
airflow in heating operation"
2 Individual airflow direction setting different from the actual
airflow direction
3 When in stop control, the louver does not close completely. Turn off the circuit breaker and then turn it on again.
The remote controller menu does not display energy saving
operating mode for when people are not present.
The remote controller menu does not display the stop
4
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.
6 During cooling and dry operation, the louver automatically
switches from horizontal (P0) to one-level downward (P1).
7 During heating operation, the use of an airflow block will not
cause other louvers to turn downward (P4).
8 When using airflow block, the airflow block will be routinely
lifted (become horizontal) during heating operation.
9 Although people are not present, the infrared presence
sensor detects human presence.
10 Although people are present, the infrared presence sensor
fails to determine their presence.
11 Large difference between floor temperature and actual
temperature
Error diagnosis of "Louver operation different from setting"
airflow direction set to
Service Diagnosis
Condition
YES
Is the individual
airflow set?
NO
Is the
YES
automatic?
NO
Is the connection
YES
of the step motor
connector normal?
NO
Refer to the following table.
· Check the "Louver operation different from setting" error
diagnosis.
Refer to Infrared Presence/Floor Sensor Error (CE) on
page 284.
Set the clock.
No defect.
When relative ambient humidity is higher, automatic louver
control will be activated.
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.
No defect.
Set louver to horizontal (P0) during thermostat OFF.
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
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
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
automatic draft
YES
Normal
prevention function
Automatic draft
"enabled"?
prevention function
switches flap to
NO
horizontal position when
human presence is
detected.
Is the
YES
wire harness
broken?
NO
Connect to the connector
correctly before action
verification.
Symptom-based Troubleshooting
Measure
Replace the wire harness.
Replace the step motor.
(Motor failure)
232