Fujitsu AB*30LBAG series Service Instruction page 24

4. HEATING OPERATION
When the airflow is set to [AUTO], the indoor fan
motor operates [MED] mode.
Then the indoor fan motor will run according
to a room temperature, as shown in Figure 6.
On the other hand, if switched in [HIGH]
the indoor motor will run at a constant airflow
of [COOL] operation modes LOW, MED, HIGH,
as shown in Table 5.
5. COOL AIR PREVENTION CONTROL (Heating mode)
The maximum value of the indoor fan speed is set as shown in Figure 7, based on the detected
temperature by the indoor heat exchanger sensor on heating mode.
( Fig.7 : Cool Air Prevention Control )
Indoor heat exchanger
temperature
33°C
30°C
6. DRY OPERATION
Refer to the Figure 4.
During the dry mode operation, the fan speed setting can not be changed.
[LOW],
Indoor heat exchanger
temperature
SETTING
FAN MODE
LO mode
S-LOW mode
05-06
( Fig.6 : Airflow change - over ( Heating : AUTO ) )
Indoor heat exchanger
temperature
Go up one-step
47°C
41°C
Go down one-step
30°C
Hold