33
AUTO
Horizontal
1
2
3
4
5
Middle
Downward
Swing
3-6. AUTO VANE OPERATION
1. 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 (approx. 12V) transmitted from indoor microprocessor.
(2) The horizontal vane angle and mode change as follows by pressing the VANE button.
COOL and DRY operation
Vane angle is fixed to Angle 1.
HEAT operation
Vane angle is fixed to Angle 4.
(4) VANE AUTO (
) mode
The microprocessor automatically determines the horizontal vane angle and operation to make the optimum room tem-
perature distribution.
(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 at Vane Angle 4 or 5 when the compressor cumulative operation time of compressor
exceeds 1 hour, the vane angle automatically changes to Angle 1 for dew prevention.
(7) SWING MODE (
)
By selecting SWING mode with VANE button, the horizontal vane swings vertically. The remote controller displays “
”.
SWING mode is cancelled when VANE button is pressed once again.
(8) Cold air prevention in HEAT operation
When any of the following conditions occurs in HEAT operation, the vane angle changes to Angle 1
automatically to prevent cold air blowing on users.
①
Compressor is not operating.
➁
Defrosting is performed.
➂
Indoor coil thermistor RT12 reads 24
:
or below.
➃
Indoor coil thermistor RT12 temperature is raising from 24°C or below, but it does not exceed 28
:
.
Released
Cold Air Prevention
24
:
28
:
Angle 1
Horizontal vane
Set position
Indoor coil thermistor RT12 temperature
NOTE1: If the temperature of RT12 reads from 24
:
to 28
:
at the air conditioner starting, this control works.
NOTE2: When 2 or more indoor units are operated with multi outdoor unit, even if any indoor unit turns thermostat off,
this control doesn’t work in the indoor unit.
(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.
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