Mitsubishi Mr.SLIM MFZ-KA09NA Service Manual page 12

8-5. AUTO VANE OPERATION
Horizontal vane
(1) Vane motor drive
These models are equipped with a stepping motor for the horizontal vane. The rotating direction, speed, and angle of
the motor are controlled by pulse signals (approximately 12 V) transmitted from indoor microprocessor.
(2) The horizontal vane angle and mode change as follows by pressing VANE CONTROL button.
(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 multi-standby starts or finishes.
(e) When the swing operation finishes.
(4) VANE AUTO ( ) mode
The microprocessor automatically determines the vane angle and operation to make the optimum room temperature dis-
tribution.
COOL and DRY operation
Vane angle is fixed to Angle 1.
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(5) STOP (operation OFF) and ON-TIMER standby
When the following cases occur, the horizontal vane returns to the closed position.
(a) When OPERATE/STOP (ON/OFF) button is pressed (POWER OFF).
(b) When the operation is stopped by the emergency operation.
(c) When ON-TIMER is ON standby.
(6) Dew prevention
During COOL or DRY operation with the vane angle at Angle 3 ~ 5 when the compressor cumulative operation time
exceeds 30 minutes to 1 hour, the vane angle automatically changes to Angle 1 for dew prevention.
(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
The vane angle changes to Horizontal position automatically to prevent cold air blowing on users.
(9) Damper operation
NOTE 1: Be sure to turn OFF the air conditioner before changing the switch setting.
With this function, air comes out simultaneously from the upper and lower air outlets so that the room can be
cooled or heated effectively. This function is set using the switch behind the front grille of the indoor unit. (This
function is available in cooling and heating operation.)
OBH568A
HEAT operation
When the upper air outlet is selected with an air outlet
selection switch, vane angle is fixed to Angle 5.
When the upper and lower air outlets are selected with an
air outlet selection switch, vane angle is fixed to Angle 3.
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