Dry Operation; Heat Operation; Auto Vane Operation - Mitsubishi Electric MSC-CA20VB Service Technical Manual

8-3. DRY ( ) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button.
OPERATION INDICATOR lamp of the indoor unit turns on with a
beep tone.
(2) Select DRY mode with OPERATION SELECT button.
(3) The microprocessor reads the room temperature and determines
the set temperature. Set temperature is as shown on the right
chart.
Thermostat (SET TEMP.) does not work.
The other operations are same as DRY mode of "I FEEL CON-
TROL".
(4) DRY operation will not function when the room temperature is
13°C or below.
8-4. HEAT ( ) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button.
OPERATION INDICATOR lamp of the indoor unit turns on with a
beep tone.
(2) Select HEAT mode with OPERATION SELECT button.
(3) Press TEMPERATURE buttons (TOO WARM or TOO COOL but-
ton) to select the desired temperature.
The setting range is 16 ~ 31°C.
(4) Indoor fan speed control is as same as HEAT mode of "I FEEL CONTROL".

8-5. AUTO VANE OPERATION

(1) Vane motor drive
This series is equipped with a stepping motor for the vane. The rotating direction, speed, and angle of the motor are
controlled by pulse signals (approx. 12V) transmitted from indoor microprocessor.
(2) Each time the VANE CONTROL button is pressed, angle of horizontal vane is changed in sequence, from 1, 2, 3, 4, 5
SWING to AUTO.
(3) Positioning
The vane presses the vane stopper once to confirm the standard position and then moves to the set angle.
Confirming of standard position is performed in case of follows.
(a) When the power supply turns ON.
(b) When the operation starts or finishes (including timer operation).
(c) When the test run starts.
(d) When the vane control is changed AUTO to MANUAL (except SWING).
(e) When SWING is finished (including ECONO COOL).
(f) When multi-standby starts or finishes.
(4) VANE AUTO ( ) mode
The microprocessor automatically determines the vane angle and operation to make the optimum room temperature dis-
COOL and DRY operation
Vane angle is fixed to Angle 1.
1
4
1
2
3
4
5

HEAT operation

Vane angle is fixed to Angle 4.
Set temperature and
:
initial room temperature in DRY mode
35
30
25
20
15
10
10
AUTO
SWING
1
4
111
15 20 25 30
Initial room temperature
1 2
3
4
5
:
35