Service Manual 37

The function of main control
INTAKE AIR TEMP.
SETTING TEMP. +1
°
F
(Compressor ON)
SETTING TEMP. -1
°
F
(Compressor OFF)
Setting
fan speed Setting
fan speed
More than
3 minutes
More than
3 minutes
Setting
fan speed
COMPRESSOR ON OFF ON OFF ON
INDOOR FAN SPEED Low Low
Protection of the indoor heat exchanger from frosting
Compressor and outdoor fan stop when indoor pipe temperature is below 32°F(0°C) and restart at the pipe
temperature is above 45°F(7°C).

3. Cooling Operation Mode

When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the
remote control and the operation diagram is shown below.
CLOSED
OPEN

< Cooling Mode >

8°
CLOSED
OPEN

< Heating Mode >

8°

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. Chaos Swing Mode

By the Chaos Swing key input, the vane automatically operates with the Chaos Swing or they are fixed to the
desired direction.
While in Chaos Swing mode, the angles of cooling and heating cycle operations are different.

Operation