Fujitsu ARXG45KMLA Service Manual page 118

¢ Dry operation
During dry operation, fan speed setting can not be changed as shown in "Fan speed" above.
¢ Heating operation
Switch the airflow AUTO, and the indoor fan motor will run according to a room temperature, as be-
low.
On the other hand, if switched in HIGH—QUIET, the indoor motor will run at a constant airflow of
HEAT operation modes QUIET, LO→, MED, HIGH as shown in "Fan speed" above.
Airflow change over (Heating: Auto)
-1°C > Tr - Ts ≥
¢ Cool air prevention control (heating mode)
The maximum value of the indoor fan speed is set as shown below, based on the detected tempera-
ture by the indoor heat exchanger sensor on heating mode.
• Normal operation
13 minutes later:
• 10 °C HEAT operation
3-1. Indoor fan control
When the room
temperature rises
Tr - Ts ≥ -1°C
LOW mode
-2°C
MED mode
-2°C > Tr - Ts
HIGH mode
Indoor heat exchanger
temperature rises
Setting fan mode
37°C
LOW
or setting fan mode*
29°C
*: Lower speed is selected.
Indoor heat exchanger
temperature rises
Setting fan mode
37°C
LOW
or setting fan mode*
29°C
LOW
or setting fan mode*
*: Lower speed is selected.
Indoor heat exchanger
temperature rises
37°C
When the room
temperature drops
Tr - Ts ≥
-1.5°C
-2.5°C > Tr - Ts
Indoor heat exchanger
temperature drops
S-LOW
Indoor heat exchanger
temperature drops
Indoor heat exchanger
temperature drops
AUTO
LOW
- (04-10) -
-1.5°C
> Tr - Ts ≥ -2.5°C
32°C
24°C
32°C
24°C
32°C
3. Fan control