39
9-3. 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 the 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 TEMPERATURE) does not work.
The other operations are same as DRY mode of “I
FEEL CONTROL”.
(4) DRY operation will not function when the room tem-
perature is 55
-
F or below.
(5) When DRY operation functions, the fan speed is
lower than cool operation.
95
86
77
68
59
50
50
59
68
77
86
95
F
F
9-4. FAN OPERATION
(1)Press POWER ON/OFF button.
(2)Select FAN mode.
(3)Select the desired fan speed.When AUTO,it becomes Lo.
(Only DRY operation.)
Only indoor fan operates.Outdoor unit does not operate.
<MS09NW2, MS12/15/17NN2>
<MS09NW, MS12/15/17NN>
9-6. AUTO VANE OPERATION
(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 changes as follows by pressing the VANE CONTROL (
or
) button.
9-5. FAN MOTOR CONTROL<MS09>
(1) Rotational frequency feedback control
The indoor fan motor is equipped with a rotational frequency sensor, and outputs signal to the microprocessor to feed-
back the rotational frequency. Comparing the current rotational frequency with the target rotational frequency (Hi,Me,Lo)
the microprocessor controls SR11 and adjusts fan motor electric current to make the current rotational frequency close
to the target rotational frequency. With this control, when the fan speed is switched, the rotational frequency changes
smoothly.
(2) Fan motor lock-up protection
When the rotational frequency feedback signal has not output for 12 seconds, (or when the microprocessor cannot
detect the signal for 12 seconds) the fan motor is regarded locked-up. Then the electric current to the fan motor is shut
off. 3 minutes later, the electric current is applied to the fan motor again. During the fan motor lock-up, the OPERATION
INDICATOR lamp flashes on and off to show the fan motor abnormality. (See page 45.)
VANE
VANE
