Mitsubishi Electric MS-09SN-C1 Service Manual page 29

(3) Positioning
The vane is once pressed to the vane stopper below to confirm the standard position and then set to the desired angle.
Confirming of standard position is performed in case of follows.
(a) When the OPERATE / STOP(ON / OFF) button is pressed.
(b) When the vane control is changed from AUTO to MANUAL.
(c) When the SWING is finished.
(d) When the test run starts.
(e) When the power supply turns ON.
(4) VANE AUTO ( ) mode
In VANE AUTO mode, the microprocessor automatically determines the vane angle to make the optimum room-temper-
ature distribution.
1 In COOL and DRY operation
2 In FAN operation
(5) Dew prevention
During COOL or DRY operation at Vane Angle 4 or 5 when the cumulative operation time of compressor exceeds 1
hour, the vane angle automatically changes to Angle 1 for dew prevention.
(6) SWING MODE ( )
By selecting SWING mode with the VANE CONTROL button, the horizontal vane swings vertically. The remote controller
displays " ".
(7) ECONO COOL ( ) operation (ECONOmical operation)
When the ECONO COOL button is pressed in COOL mode, set temperature is automatically set 2°C higher than that in
COOL mode.
Also the horizontal vane swings in various cycle according to the temperature of indoor heat exchanger(RT12).
SWING operation makes you feel cooler than set temperature. So, even though the set temperature is higher than that
in COOL mode, the air conditioner can keep comfort. As a result, energy can be saved.
ECONO COOL operation is cancelled when the ECONO COOL button is pressed once again or VANE CONTROL but-
ton is pressed or change to other operation mode.
NOTE : ECONO COOL operation not work in COOL mode of "I FEEL CONTROL".
SWING operation
In swing operation of ECONO COOL mode, the initial air flow direction is adjusted to "Horizontal".
According to the temperature of indoor coil thermistor RT12 at starting of this operation, next downward blow time is
decided. Then when the downward blow has been finished, next horizontal blow time is decided.
For initial 10 min. the swing operation is performed in table G~H for quick cooling.
Also, after 10 min. when the difference of set temperature and room temperature is more than 2 degrees, the swing
operation is performed in table D~H for more cooling.
The air conditioner repeats the swing operation in various cycle as follows.
Temperature of indoor coil
thermistor RT12 (:)
15°C or less
A
B 15°C to 17°C
C 17°C to 18°C
18 °C to 20 °C
D
20°C to 21°C
E
21°C to 22°C
F
G 22°C to 24°C
more than 24°C
H
Downward blow time
(sec.)
2
5
8
11
14
17
20
23
29
Vane angle is fixed to Angle 1.
Vane angle is fixed to Angle 4.
Horizontal blow time
(sec.)
23
20
17
14
11
8
5
2