39
11.2 Indoor Fan Motor Operation
11.2.1 Basic Rotation Speed
Manual Fan Speed
o
Fan motor’s number of rotation is determined according to remote control setting.
Remote control
○
○
○
○
○
Tab
Hi
Me+
Me
Me-
Lo
Auto Fan Speed
o
According to room temperature and setting temperature, indoor fan speed is determined automatically.
o
The indoor fan will operate according to pattern below.
Fan Speed
a
b
c
d
e
f
g
h
a
b
Higher
Medium
Lower
[1 pattern : 10s]
Feedback control
o
Immediately after the fan motor is started, feedback control is performed once every second.
o
During fan motor on, if fan motor feedback ≥ 2550 rpm or <50 rpm continuously for 10 seconds, the fan
motor error counter increased; fan motor is then stopped and restarted. If the fan motor error counter
increased to 7, then H19 – fan motor error is detected. Operation stopped and could not be restarted.
11.3 Airflow Direction
There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by
vertical vanes).
Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat
exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using
remote control).
11.3.1 Vertical Airflow
Operation
Mode
Airflow
Direction
Vane Angle (°)
1
2
3
4
5
Cooling
Auto
10 ~ 40
Manual
10
17.5
25
32.5
40
Soft Dry
Auto
10 ~ 40
Manual
10
17.5
25
32.5
40
MPS9/12/15SK
Operation
Mode
Airflow
Direction
Vane Angle (°)
1
2
3
4
5
Cooling
Auto
5 ~ 35
Manual
5
12.5
20
27.5
35
Soft Dry
Auto
5 ~ 35
Manual
5
12.5
20
27.5
35
MPS18/24SK/28SK
Automatic vertical airflow direction can be set using remote control; the vane swings up and down within the
angles as stated above. When the air conditioner is stopped using remote control, the vane will shift to close
position.
Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated above and
the positions of the vane are as figure below. When the air conditioner is stopped using remote control, the vane
will shift to close position.
Close position
MPS9/12/15SK
Side View
135°
4
5
5
3
2
1
Close position
MPS18/24/28SK
Side View
140°
4
3
2
1
