The maximum value of the indoor fan speed is set as shown in Fig. 5 , based on the detected
temperature by the indoor heat exchanger sensor in heating mode.
< ASU type >
5. HEATING OPERATION (Auto : Heating)
Switch the airflow [Auto], and the indoor fan will run according to a room temperature,
as shown in Fig. 4 .
On the other hand, if switched in [Hi] [Quiet], the indoor fan will run at a constant airflow
of [Heat] operation modes Quiet, Lo, Me, Hi, as shown in Table 2 .
6. COOL AIR PREVENTION CONTROL (For Heating and Minimum Heat operation)
( Fig. 4 : Airflow change - over )
TR-Ts > -3°F
=
-5
°F > TR-Ts
-3
°F > TR-Ts > -5°F
=
TR-Ts > -2
°F
=
-4
°F > TR-Ts
-2
°F > TR-Ts > -4°F
=
When the room
temperature rises
When the room
temperature drops
TR : Room temperature
Ts : Setting temperature
Lo
Me
Me+
107.6°F
(42°C)
86
°F
(30°C)
93.2
°F
(34°C)
When Indoor heat exchanger
temperature rises
When Indoor heat exchanger
temperature drops
Hi
*Me+ or setting
FAN mode
Cool air
prevention
102.2
°F
(39°C)
98.6
°F
(37°C)
98.6
°F
(37°C)
89.6
°F
(32°C)
82.4
°F
(28°C)
S-Lo
*Lo or setting
FAN mode
During NORMAL HEATING OPERATION
Field setting is necessary at AU and AR type as "Cool air prevention : effective"
TR-Ts > -3°F
=
-5
°F > TR-Ts
-3
°F > TR-Ts > -5°F
=
TR-Ts > -2
°F
(-1°C)
=
-4
°F > TR-Ts
-2
°F > TR-Ts > -4°F
=
When the room
temperature rises
When the room
temperature drops
Lo
Me
Hi
< AGU/ AUU/ ARU type >
< ASU type >
( Fig. 5 : Airflow change - over for cool air prevention )
*Lower speed is selected
(-1°C) (-2°C)
(-1°C)
(-2°C)
(-1.5°C)
(-1.5°C)
(-2.5°C)
(-2.5°C)
(-1°C)
(-2°C)
(-2°C)
(-1.5°C)
(-1.5°C)
(-2.5°C)
(-2.5°C)
< AGU type >
107.6°F
(42°C)
87.8°F
(31°C)
When Indoor heat exchanger
temperature rises
Hi
*Me or setting
FAN mode
Cool air
prevention
102.2°F
(39°C)
93.2°F
(34°C)
S-Lo
*Lo or setting
FAN mode
*Lower speed is selected
75.2°F
(24°C)
84.2°F
(29°C)
98.6°F
(37°C)
When Indoor heat exchanger
temperature drops
86.0°F
(30°C)
01-09
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