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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