(1) The function of main control
1. Time delay Safety Control
• 3min.; The compressor operation is delayed for 3 minutes to balance the pressure of cycle.
(Protection of compressor)
• 5sec.;
The indoor fan is delayed for 5 seconds, when operating initially, to prevent noises occurred by the vertical
louver and wind.
• 2min.; The reversing valve is delayed for 2 minutes to prevent the refrigerant-gas for abnormal noise when the
heating operation is OFF or switched to the other operation mode while compressor is off.
While compressor is running, it takes 3~5 seconds to switch.
2. Airflow Direction Control
• This function is to swing the vertical louver up and down automatically and to set it at a fixed position.
• The procedure is as the following.
1st ; Press the ON/OFF Button to operate the unit.
2nd ; Press the Airflow Direction Control Button to swing the vertical louver up and down automatically.
3nd ; Repress the Airflow Direction Control Button to set the vertical louver at a fixed position.
3. Cooling Operation Mode
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the
remote controller and the operation diagram is shown below.
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Operation Details
INTAKE AIR TEMP.
SETTING TEMP. +1
°
F
(Compressor ON)
SETTING TEMP. -1
°
F
(Compressor OFF)
Selecting
fan speed
Selecting
fan speed
More than
3 minutes
More than
3 minutes
Selecting
fan speed
COMPRESSOR ON OFF ON OFF ON
INDOOR FAN SPEED Low Low
<18K, 24K>
<9K, 12K>
■ Protection of the indoor heat exchanger from frosting
• Compressor and outdoor fan stop when indoor pipe temperature is below 32°F and restart at the pipe tempera-
ture is above 45°F.