SiUS331604E Symptom-based Troubleshooting
Service Diagnosis 124
2.2 With the Optional Infrared Floor Sensor
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 mode, 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.
Please check "Infrared presence/infrared floor sensor error
(CE)" in troubleshooting.
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 outside 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.
Error diagnosis of "Louver operation different from setting"
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.
Diagnosis Measures
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.
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