LG LB-F4280HL / LB-F4280CL Service Manual ▷ View online
6. Defrost Control
• Defrost control is availavle 45 minutes later since heating mode operation started, and it will not prolong over 10
minutes.
• Defrost control is carried out when the outdoor pipe temp. falls below -6°C for more than 3 minutes after 45 min-
utes passed from starting of heating operation.
• Defrost ends after 10 minutes passed from starting of defrost operation or when the outdoor pipe temp. rises
over 12°C after 5 minutes passed from starting of defrost.
7. Auto Restarting Operation
• When the power is restored after a sudden power failure while in appliance operation, the mode before the
power failure is kept on the memory and the appliance should be on the automatically operates in the mode on
the memory.
the memory.
• Operation Mode that is kept on the memory
- State of Operation ON/OFF
- Operation Mode/Setting Temp/Selected Airflow Speed
- Operation Mode/Setting Temp/Selected Airflow Speed
• If no input by the remote controller within 7 hr after the appliance operates by the Auto Restarting operation,
the appliance is forced to stop at the moment of 7-hr elapse.
8. Self-Diagnosis Function
• 'CHECK' will flash in the remote controller display when a problem occurs. Then please contact your dealer.
• Correct the accident point as shown in the table below before restarting operation.
• During the normal operation 'CHECK' won't be displayed in the remote controller.
• Correct the accident point as shown in the table below before restarting operation.
• During the normal operation 'CHECK' won't be displayed in the remote controller.
–13–
More than 45 minutes of
heating operation
Outdoor Pipe Temp.
Indoor Fan
Compressor
4-Way Valve
ON
ON
ON
ON
OFF
ON
OFF
HOT-
START
ON
ON
OFF
OFF
ON
12
°
C
(Defrost OFF)
-6
°
C
(Defrost ON)
Within
10 minutes
Defrost
Defrost
More than 45 minutes of
heating operation
Remote controller LCD
Accident Point
F
1
Indoor temperature thermistor error
F 2
Indoor piping thermistor error
F 3
Indoor/Outdoor unit communication error
6. Defrost Control
• Defrost control is availavle 45 minutes later since heating mode operation started, and it will not prolong over 10
minutes.
• Defrost control is carried out when the outdoor pipe temp. falls below -6°C for more than 3 minutes after 45 min-
utes passed from starting of heating operation.
• Defrost ends after 10 minutes passed from starting of defrost operation or when the outdoor pipe temp. rises
over 12°C after 5 minutes passed from starting of defrost.
7. Auto Restarting Operation
• When the power is restored after a sudden power failure while in appliance operation, the mode before the
power failure is kept on the memory and the appliance should be on the automatically operates in the mode on
the memory.
the memory.
• Operation Mode that is kept on the memory
- State of Operation ON/OFF
- Operation Mode/Setting Temp/Selected Airflow Speed
- Operation Mode/Setting Temp/Selected Airflow Speed
• If no input by the remote controller within 7 hr after the appliance operates by the Auto Restarting operation,
the appliance is forced to stop at the moment of 7-hr elapse.
8. Self-Diagnosis Function
• 'CHECK' will flash in the remote controller display when a problem occurs. Then please contact your dealer.
• Correct the accident point as shown in the table below before restarting operation.
• During the normal operation 'CHECK' won't be displayed in the remote controller.
• Correct the accident point as shown in the table below before restarting operation.
• During the normal operation 'CHECK' won't be displayed in the remote controller.
–13–
More than 45 minutes of
heating operation
Outdoor Pipe Temp.
Indoor Fan
Compressor
4-Way Valve
ON
ON
ON
ON
OFF
ON
OFF
HOT-
START
ON
ON
OFF
OFF
ON
12
°
C
(Defrost OFF)
-6
°
C
(Defrost ON)
Within
10 minutes
Defrost
Defrost
More than 45 minutes of
heating operation
Remote controller LCD
Accident Point
F
1
Indoor temperature thermistor error
F 2
Indoor piping thermistor error
F 3
Indoor/Outdoor unit communication error
6. Defrost Control
• Defrost control is availavle 45 minutes later since heating mode operation started, and it will not prolong over 10
minutes.
• Defrost control is carried out when the outdoor pipe temp. falls below -6°C for more than 3 minutes after 45 min-
utes passed from starting of heating operation.
• Defrost ends after 10 minutes passed from starting of defrost operation or when the outdoor pipe temp. rises
over 12°C after 5 minutes passed from starting of defrost.
7. Auto Restarting Operation
• When the power is restored after a sudden power failure while in appliance operation, the mode before the
power failure is kept on the memory and the appliance should be on the automatically operates in the mode on
the memory.
the memory.
• Operation Mode that is kept on the memory
- State of Operation ON/OFF
- Operation Mode/Setting Temp/Selected Airflow Speed
- Operation Mode/Setting Temp/Selected Airflow Speed
• If no input by the remote controller within 7 hr after the appliance operates by the Auto Restarting operation,
the appliance is forced to stop at the moment of 7-hr elapse.
8. Self-Diagnosis Function
• 'CHECK' will flash in the remote controller display when a problem occurs. Then please contact your dealer.
• Correct the accident point as shown in the table below before restarting operation.
• During the normal operation 'CHECK' won't be displayed in the remote controller.
• Correct the accident point as shown in the table below before restarting operation.
• During the normal operation 'CHECK' won't be displayed in the remote controller.
–13–
More than 45 minutes of
heating operation
Outdoor Pipe Temp.
Indoor Fan
Compressor
4-Way Valve
ON
ON
ON
ON
OFF
ON
OFF
HOT-
START
ON
ON
OFF
OFF
ON
12
°
C
(Defrost OFF)
-6
°
C
(Defrost ON)
Within
10 minutes
Defrost
Defrost
More than 45 minutes of
heating operation
Remote controller LCD
Accident Point
F
1
Indoor temperature thermistor error
F 2
Indoor piping thermistor error
F 3
Indoor/Outdoor unit communication error
6. Defrost Control
• Defrost control is availavle 45 minutes later since heating mode operation started, and it will not prolong over 10
minutes.
• Defrost control is carried out when the outdoor pipe temp. falls below -6°C for more than 3 minutes after 45 min-
utes passed from starting of heating operation.
• Defrost ends after 10 minutes passed from starting of defrost operation or when the outdoor pipe temp. rises
over 12°C after 5 minutes passed from starting of defrost.
7. Auto Restarting Operation
• When the power is restored after a sudden power failure while in appliance operation, the mode before the
power failure is kept on the memory and the appliance should be on the automatically operates in the mode on
the memory.
the memory.
• Operation Mode that is kept on the memory
- State of Operation ON/OFF
- Operation Mode/Setting Temp/Selected Airflow Speed
- Operation Mode/Setting Temp/Selected Airflow Speed
• If no input by the remote controller within 7 hr after the appliance operates by the Auto Restarting operation,
the appliance is forced to stop at the moment of 7-hr elapse.
8. Self-Diagnosis Function
• 'CHECK' will flash in the remote controller display when a problem occurs. Then please contact your dealer.
• Correct the accident point as shown in the table below before restarting operation.
• During the normal operation 'CHECK' won't be displayed in the remote controller.
• Correct the accident point as shown in the table below before restarting operation.
• During the normal operation 'CHECK' won't be displayed in the remote controller.
–13–
More than 45 minutes of
heating operation
Outdoor Pipe Temp.
Indoor Fan
Compressor
4-Way Valve
ON
ON
ON
ON
OFF
ON
OFF
HOT-
START
ON
ON
OFF
OFF
ON
12
°
C
(Defrost OFF)
-6
°
C
(Defrost ON)
Within
10 minutes
Defrost
Defrost
More than 45 minutes of
heating operation
Remote controller LCD
Accident Point
F
1
Indoor temperature thermistor error
F 2
Indoor piping thermistor error
F 3
Indoor/Outdoor unit communication error