Fujitsu Inverter Halcyon ASU12RMLQ, Service Instruction

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(4). DRY OPERATION
(5). HEATING OPERATION
Switch the airflow [AUTO], and the
(Fig.3)
indoor fan motor will run according
airflow change - over ( Heating: AUTO)
to a room temperature, as shown in
When the room
Figure 3.
temperature rises
On the other hand, if switched
LOW mode
[HIGH] [QUIET], the indoor motor
-2°F(-1°C)
will run at a constant airflow of [HEAT]
-3°F(-1.5°C)
operation modes QUIET, LOW, MED,
HIGH, as shown in Table 2.
-4°F(-2°C)
-5°F(-2.5°C)
MED + mode
When the room
temperature lowers
(Room temperature) - (Setting temperature)
(6). COOL AIR PREVENTION CONTROL (Heating mode)
Indoor heat exchanger Indoor heat exchanger
temperature temperature
117°F(47°C)
Hi
104°F(40°C)
Me+
99°F(37°C)
Lo
Cool air prevention
86°F(30°C)
S-Lo
During the dry mode operation, the fan speed setting can not be changed.
The indication of the remote controller is fixed in [AUTO].
The fan operates on [S-Lo] mode or OFF.
The maximum value of the indoor fan speed is set as shown in Figure 5, based on the detected
temperature by the indoor heat exchanger sensor on heating mode.
(Fig.5 : Cool Air Prevention Control)
01-05
104°F(40°C)
82°F(28°C)
90°F(32°C)
93°F(34°C)
MED mode
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 4.
On the other hand, if switched in [HIGH] [QUIET],
the indoor motor will run at a constant airflow
of [HEAT] operation modes QUIET, LOW, MED, HIGH,
as shown in Table 2.
Indoor heat exchanger
temperature
( Fig.4 : Airflow change - over ( Heating : AUTO ) )
Hold
Go down one-step
Go up one-step
5-2. For AR Type
5-1. For AU / AS Type
6-1. For AS Type
117°F(47°C)
105.8°F(41°C)