Mitsubishi Electric MCFH-13NV-E3 Service Manual page 22

9-5. AUTO VANE OPERATION
(1) Vane motor drive
This model 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
to AUTO.
(3) Positioning
The 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.
(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 vane angle and operation to make the optimum
room-temperature distribution.
1. In COOL and DRY operation
2. In HEAT operation
(5) STOP (operation OFF) and ON-TIMER standby.
When the following cases occur, the 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 position 4 or 5 when the compressor cumulative operation time exceeds 1 hour, the
angle of horizontal vane automatically changes to Position 1 for dew prevention.
(7) SWING ( ) MODE
By pressing the SWING (
operation, between Position 2 and 4 in HEAT operation. The remote controller displays "
) button or SWING (
SWING mode is released.
1
2
3
4
5
1
) button, horizontal vane swings vertically between Position 1 and 5 in COOL and DRY
) button is pressed during SWING mode or the operation stops or changes to other mode,
AUTO
Vane angle is fixed to position 1.
4
Vane angle is fixed to position 4.
22
1 2
3
4
5
" . If the VANE CONTROL (