LG ARNU Series, Service Manual

Page: 39 / 226

Service Manual 39
- Operation Mode/Setting Temp/Selected Airflow Speed
- Sleep Timer Mode/Remaining Time of Sleep Timer (unit of hour)
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Forced Operation
• Operation procedures when the remote control can't be used.
• The operation will be started if the power button is pressed.
• If you want to stop operation, re-press the button.
• While in forced operation, the key input by the remote control has no effect and the buzzer sounds 10 times to
indicate the forced operation.
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Test operation
• During the TEST OPERATION, the unit operates in cooling mode at high speed fan, regardless of room tem-
perature and resets in 18±1 minutes.
• During test operation, if remote controller signal is received, the unit operates as remote controller sets.
If you want to use this operation, Press and hold ON/OFF button 3~5 seconds, then the buzzer sound 1 "beep".
• If you want to stop the operation, re-press the button.
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Protection of the evaporator pipe from frosting
• If the indoor pipe temp is below 0°C in 7 min. after the compressor operates without any pause while in cool-
ing cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the indoor
evaporator pipe from frosting.
• When the indoor pipe temp is 7°C or higher after 3 min. pause of the compressor, the compressor and the
outdoor fan is turned on according to the condition of the room temperature.
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Buzzer Sounding Operation
• When the appliance-operation key is input by the remote control, the short "beep-beep-" sounds.
• When the appliance-pause key is input by the remote control, the long "beep—" sounds.
• When a key is input by the remote control while the slide switch on the main unit of the appliance is on the
forced operation position, the error sound "beep-beep-beep-beep-beep-" is made 10 times to indicate that the
remote control signal cannot be received.
Heat pump Model
Cooling Model
Room Temp.
≥
24°C 21°C
≤
Room Temp. < 24°C Room Temp. < 21°C
Operating mode Cooling Cooling Healthy Dehumidification Heating
Indoor Fan Speed High High High High
Setting Temperature 22°C 22°C 23°C 24°C