28 Indoor Unit
3. Operation Details
Operation Details
â– Time Delay Safety Control
• 5sec
Vertical louvers are delayed for 5 secs to be opened to prevent the frictional sound between louver and air
flow.
• 30sec The 4-way valve is ceased for 30sec. to prevent abnormal noise when the Heating operation is OFF or
switched to the other operation mode while compress is off.
While compressor is running, it takes 3~5 seconds to switch.
â– Auto Swing Control
• This function is to swing the louver up and down automatically.
â– Air-Filter Checking Control
• 'Filter' sign will appear on the remote controller display and main body display when an air-filter is polluted. Then
clean the air-filter referring to Owners Manual.
â– Soft-Dry Operation
• The indoor fan speed is automatically set to the low, and fan speed control is not available because of already being
set to the best speed for Dry Operation by microcontroller control.
â– Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote con-
troller and the operation diagram is as follows.
Intake Air Temperature
SET TEMPERATURE +0.5°C
(COMP. ON)
SET TEMPERATURE
SET TEMPERATURE -0.5°C
(COMP. OFF)
Selected Selected Selected
fan speed fan speed fan speed
COMPRESSOR ON OFF ON OFF ON
INDOOR FAN Low Low
More than
3 minutes
More than
3 minutes
(1) The function of main control
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