Indoor Fan Motor Operation; Airflow Direction - Panasonic CS-MPS9SKH Service Manual

11.2 Indoor Fan Motor Operation

11.2.1 Basic Rotation Speed

Manual Fan Speed
Fan motor's number of rotation is determined according to remote control setting.
o

Auto Fan Speed
According to room temperature and setting temperature, indoor fan speed is determined automatically.
o
The indoor fan will operate according to pattern below.
o
Fan Speed a
Higher
Medium
Lower

Feedback control
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
o
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 Airflow
Mode Direction
Auto
Cooling
Manual
Auto
Soft Dry
Manual
MPS9/12/15SK

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.
Remote control ○
Tab Hi
b c d
Vane Angle (°)
1 2 3 4
10 ~ 40
10 17.5 25 32.5
10 ~ 40
10 17.5 25 32.5
Side View
1
135°
2
3
4
Close position
5
MPS9/12/15SK
○ ○
Me+ Me
e f g
[1 pattern : 10s]
Operation
Mode
5
Cooling
40
Soft Dry
40
1
2
3
4
MPS18/24/28SK
39
○ ○
Me- Lo
h a b
Vane Angle (°)
Airflow
Direction
1 2
Auto
Manual 5 12.5
Auto
Manual 5 12.5
MPS18/24SK/28SK
Side View
140°
Close position
5
3 4 5
5 ~ 35
20 27.5 35
5 ~ 35
20 27.5 35