With The Optional Infrared Floor Sensor - Daikin VRV IV-S RXTQ-TAVJU Series Service Manual

SiUS331604E
2.2

With the Optional Infrared 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 mode, the louver does not close completely.
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"
Service Diagnosis
Condition
airflow direction set to
Refer to the following table.
· Check the "Louver operation different from setting" error
diagnosis.
Turn off the circuit breaker and then turn it on again.
Please check "Infrared presence/infrared floor sensor error
(CE)" in troubleshooting.
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 outside 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.
Diagnosis
YES
Is the individual
airflow set?
NO
Is the
YES
automatic?
NO
Is the connection
YES
of the step motor
connector normal?
NO
Symptom-based Troubleshooting
Measure
Normal
Reset (Cancel)
individual airflow.
Is the
YES
automatic draft prevention
Normal
function "enabled"?
Automatic draft
prevention function
NO
switches flap to
horizontal position
when human
presence is detected.
Is the
YES
wire harness Replace the wire
harness.
broken?
NO
Replace the step
motor. (Motor failure)
Connect to the
connector
correctly before
action verification.
Measures
124