LG LAN121CNM Service Manual - Page 36

Forced operation, Test operation, Auto restart, Protection of the evaporator pipe from frosting,

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Operation I 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. Operating mode Indoor FAN Speed Setting Temperature Cooling Model Cooling High 22°C(71.6°F) Heat pump Model Room Temp. ≥ 24°C(75.2°F) 21°C(69.8°F) ≤ Room Temp. < 24°C(75.2°F) Room Temp. < 21°C(69.8°F) Cooling Healthy Dehumidification Heating High High High 22°C(71.6°F) 23°C(73.4°F) 24°C(75.2°F) • 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. I Test operation • During the TEST OPERATION, the unit operates in cooling mode at high speed fan, regardless of room temperature 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, open the front panel upward and Press the power button let it be pressed for about 3 seconds. • If you want to stop the operation, re-press the button. I Auto restart • In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate procedures automatically to the previous operating conditions. I 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 cooling 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. I 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. 36 Room Air Conditioner

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36
Room Air Conditioner
Operation
■
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.
■
Test operation
•
During the TEST OPERATION, the unit operates in cooling mode at high speed fan, regardless of
room temperature 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, open the front panel upward and Press the power button let it be
pressed for about 3 seconds.
•
If you want to stop the operation, re-press the button.
■
Auto restart
•
In case the power comes on again after a power failure, Auto Restarting Operation is the function to
operate procedures automatically to the previous operating conditions.
■
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 cooling 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.
■
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.
Heat pump Model
Cooling Model
Room Temp.
≥
24°C(75.2°F
)
21°C(69.8°F)
≤
Room Temp. < 24°C(75.2°F)
Room Temp. < 21°C(69.8°F)
Operating mode
Cooling
Cooling
Healthy Dehumidification
Heating
Indoor FAN Speed
High
High
High
High
Setting Temperature
22
°
C(71.6
°
F)
22
°
C(71.6
°
F)
23
°
C(73.4
°
F)
24
°
C(75.2
°
F)