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16. Indoor Unit Protection Control
Protection controls applicable for Cool / Soft Dry Mode
16.1 Odor Remove control
16.2 Freeze Prevention control
• This control starts when all below condition are satisfied
o Indoor thermostat ON and compressor ON for 4 minutes after startup.
o Indoor heat exchanger temperature less than 4°C.
• When received freeze prevention signal from indoor unit, the compressor frequency changes according to indoor
heat exchanger temperature.
• When freeze condition continuously for 6 minutes, indoor unit request thermostat OFF and capability supplies to
targeted indoor unit stops.
• This control stops when indoor heat exchanger temperature > 6°.C
16.3 Dew Prevention control
• This control starts when all conditions below are satisfied
o Indoor thermostat ON and compressor ON
o Outdoor temperature < 30°C
o Indoor intake temperature > 24°C
o Indoor fan speed is Lo or AUTO
• Indoor fan speed changed from SLo to Lo and air swing angle follows dew prevention angle.
• When received dew prevention signal from indoor unit, compressor frequency reduces according to indoor heat
exchanger temperature.
• This control stops when any conditions below is satisfied
o Thermostat OFF or compressor OFF
o Remote control fan speed & temperature setting changed
o Outdoor temperature > 30°C
o Indoor intake temperature < 24°C
o Indoor heat exchanger temperature > 17°C
16.4 Mist Prevention Control
• This control starts when all conditions below are satisfied
o Indoor thermostat ON and Compressor ON
o Indoor fan Lo
o Indoor heat exchanger temperature < 13°C
• When received mist prevention signal from indoor unit, the compressor frequency reduces according to indoor
heat exchanger temperature.
• Indoor fan speed changes from SLo to Lo.
• This control stops when any conditions below is satisfied
o Thermostat OFF or compressor OFF
o Remote control fan speed & temperature setting changed
o Indoor heat exchanger temperature > 14°C
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