Cold Air Prevention In Heat Operation; Econo Cool Operation (Economical Operation); Timer Operation - Mitsubishi Electric MSC-07RV Service Manual

(7) Cold air prevention in HEAT operation

When any of the following conditions occurs in HEAT operation, the horizontal vane angle changes to Angle 1 automat-
ically to prevent cold air blowing on users.
Compressor is not operating.
Defrosting is performed.
Indoor coil thermistor RT12 reads 24: or below.
Indoor coil thermistor RT12 temperature is raising from 24°C or below, but it does not exceed 28:.
Indoor coil thermistor
RT12 temperature
NOTE : If the temperature of RT12 reads from 24°C to 28°C at the air conditioner stating , this control works.
(8) ECONO COOL (
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.
NOTE : ECONO COOL operation not work in COOL mode of "I FEEL CONTROL".
SWING operation
In swing operation of ECONO COOL operation air flow is initially blew out upward(levelly).
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 upward blow time is decided.
For initial 10 min. the swing operation is performed in table G~H for quick cooling(but G : RT 12 is 24: or less).
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(but D: RT12 is 20: or less).
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
•ECONOmical operation (SET TEMPERATURE)
When this operation is selected in MANUAL COOL mode, SET TEMPERATURE is automatically set 2°C higher than
that in MANUAL COOL mode.
By above SWING operation temperature that you feel can decrease by 2°C.
So keeping comfort, energy can be saved.

11-8. TIMER OPERATION

1. How to set the timer
(1) Press OPERATE/STOP(ON/OFF) button to start the air conditioner.
(2) Check that the current time is set correctly.
NOTE : Timer operation will not work without setting the current time. Initially "AM0:00" blinks at the current time display
of TIME MONITOR, so set the current time correctly with CLOCK SET button.
(3) Press ON or OFF TIMER buttons to select the operation.
" " button... AUTO START operation (ON timer)
" " button... AUTO STOP operation (OFF timer)
<
MUH-07/09/12RV,MXZ-18/32RV
Released
Cold air prevention
) operation (ECONOmical operation)
Downward blow time
>
24:
28:
Upward(level) blow time
(sec.)
2
5
8
11
14
17
20
23
110
Horizontal vane
Set position
Angle 1
(sec.)
23
20
17
14
11
8
5
2