Mitsubishi Electric MSZ-G09SV Service Manual page 54

(3) Positioning
The horizontal 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 (POWER ON/OFF).
(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 horizontal vane angle and operation to make the
optimum room-temperature distribution.
1 1 In COOL and DRY operation
2 2 In HEAT operation
(5) STOP (operation OFF) and ON-TIMER standby.
When the following cases occur, the horizontal vane returns to the closed position.
(a) When the OPERATE/STOP(ON/OFF) button is pressed (POWER OFF).
(b) When the operation is stopped by the emergency operation.
(c) When the ON-TIMER is on standby.
(6) Dew prevention
During COOL or DRY operation at vane Angle 4 or 5 when the compressor cumulative operation time exceeds 1 hour,
the vane angle automatically changes to Angle 1 for dew prevention.
(7) SWING MODE ( )
By selecting SWING mode with the VANE button, the horizontal vane swings vertically. The remote controller displays
" ".
(8) Cold air prevention in HEAT operation
When any of the following conditions occurs in HEAT operation, the horizontal vane angle changes to Angle 1 automati-
cally to prevent cold air blowing on users.
1 1 Compressor is not operating.
2 2 Defrosting is performed.
3 3 Indoor coil thermistor RT12 reads 24: or below.
4 4 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 starting, this control works.
Released
Cold air prevention
Vane angle is fixed to Angle 1.
Vane angle is fixed to Angle 4.
Horizontal vane
Set position
Angle 1
24: 28:
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