SiBE041134EB
Main Functions
Functions and Control
21
1.4
Fan Speed Control for Indoor Unit
Outline
Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H, and HH.
The airflow rate can be automatically controlled depending on the difference between the room
thermistor temperature and the target temperature.
Automatic Fan
Speed Control
In automatic fan speed control, the step SL is not available.
= The airflow rate is automatically controlled within this range when the
FAN
setting
button is set to automatic.
Cooling
The following drawing explains the principle of fan speed control for cooling.
*The upper limit is M tap in 30 minutes from the operation start.
Heating
In heating operation, the fan speed is regulated according to the indoor heat exchanger
temperature and the difference between the room thermistor temperature and the target
temperature.
COMFORT
AIRFLOW
Operation
The fan speed is controlled automatically.
The latest command has the priority between POWERFUL and COMFORT AIRFLOW.
Step
Cooling
Heating
LLL
LL
L
ML
M
MH
H
HH (POWERFUL)
(R11681)
(R6834)
(R14588)
Fan speed
+2.5°C
+1.5°C
+0.5°C
MH*
M
ML
L
+3°C
+2°C
+1°C
Room thermistor temperature – target temperature
