Mitsubishi MSZ-FA-VA Service Technical Manual page 42

(7) SWING MODE ( )
By selecting SWING mode with VANE CONTROL button, the horizontal vane swings vertically. The remote controller
displays " " . SWING mode is cancelled when VANE CONTROL button is pressed once again.
(8) Cold air prevention in HEAT operation.
When any of the following conditions occurs in HEAT operation, the vane angle changes to Horizontal position automati-
cally to prevent cold air blowing on users.
Compressor is not operating.
Defrosting is performed.
Indoor coil thermistor RT12 reads 18: or below.
Indoor coil thermistor RT12 temperature is raising from 18°C or below, but it does not exceed 22:.
Indoor coil thermistor RT12 temperature
NOTE1: If the temperature of RT12 reads from 18: to 22: at the air conditioner starting, this control works.
NOTE2: When 2 or more indoor units are operated with multi outdoor unit, even if any indoor unit turns thermostat off,
this control doesn't work in the indoor unit.
(9) ECONO COOL (
When 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 ECONO COOL button is pressed once again or VANE CONTROL
button is pressed or change to other operation mode.
SWING operation
In swing operation of ECONO COOL operation 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 minutes the swing operation is performed in table G~H for quick cooling.
Also, after 10 minutes when the difference of set temperature and room temperature is more than 2:, the swing oper-
ation 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
A
B
C
D
E
F
G
H
Downloaded from AC-Manual.com Manuals
) operation (ECONOmical operation)
15°C or less
15°C to 17°C
17°C to 18°C
18 °C to 20 °C
20°C to 21°C
21°C to 22°C
22°C to 24°C
more than 24°C
Released
Cold Air Prevention
18:
Downward blow time
(second)
2
5
8
11
14
17
20
23
42
Horizontal vane
Set position
Horizontal Position
22:
Horizontal blow time
(second)
23
20
17
14
11
8
5
2