LG LS-D1862HL Service Manual ▷ View online
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8.Hot-Start Control
• The indoor fan stops until the evaporator piping temperature will be reached to 28°C.
• During heating operation, if piping temperatures falls below 26°C fan stops.
• The operation diagram is as following.
9.Defrost Control
• Defrost operation is controlled by timer and sensing temperature of outdoor pipe.
• The first defrost starts only when the outdoor pipe temperature falls below -6°C after 60 minutes passed from
starting of heating operation and more than 10 minutes operation of compressor.
• Defrost ends after 12 minutes passed from starting of defrost operation or when the outdoor pipe temperature
rises over 12°C even if before 12 minutes.
• The second defrost starts only when the outdoor pipe temperature falls below -6°C after 60 minutes passed from
ending of the first defrost and more than 10 minutes operation of compressor.
OUTDOOR
PIPE TEMP.
PIPE TEMP.
More than 60 minutes of
heating operation
More than 10 min.
running of compressor
More than 60 minutes of
heating operation
More than 10 min.
running of compressor
Within
12minutes
Defrost
Defrost
HOT-
START
12°C
(DEFROST OFF)
-6°C
(DEFROST ON)
INDOOR FAN
ON
OFF
ON
OFF
COMPRESSOR
ON
ON
ON
ON
4-WAY VALVE
ON
OFF
ON
OFF
INDOOR PIPE
TEMP.
TEMP.
28°C
26°C
1min
OFF
OFF
LOW
Selecting
fan speed
INDOOR FAN
SPEED
COMPRESSOR
ON
10. Soft Dry Operation Mode
• During Soft Dry Operation, the compressor ON temperature is the setting temperature plus 1°C, the compres-
sor OFF temperature is the setting temperature minus 0.5°C.
• When the room temperature rises over the compressor ON temperature, the operation mode is switched to the
Cooling mode.
• When the room temperature falls between the compressor ON temperature and OFF temperature, the opera-
tion mode is switched to the Soft Dry Operation.
• The operation diagram is shown below.
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INTAKE AIR TEMP.
SETTING TEMP. +1°C
(Compressor ON)
SETTING TEMP. -0.5°C
(Compresso OFF)
Selecting
fan speed
Selecting
fan speed
Operation
Cooling
Dry operation
maximum
4 min.
maximum
10 min.
10 min.
3 min.
3 min.
maximum 7 min.
Cooling
operation
COMPRESSOR
ON
OFF
ON
OFF
ON
OFF
ON
INDOOR FAN SPEED
LOW
LOW
LOW
LOW
LOW
11.Protection of the evaporator pipe from frosting
§
24K
• Outdoor fan motor stops when indoor pipe temperature is below 3°C and restarts at the pipe temperature above 6°C or after 90
seconds, if the pipe temperature does not rise to 6°C, outdoor fan motor runs continuously at even below 3°C.
§
18K MODELS
• Compressor and outdoor fan stop when indoor pipe temperature is below 0°C and restart at the pipe temperature is above 7°C.
INDOOR PIPE
TEMPERATURE
TEMPERATURE
Max. 90sec.
Max. 90sec.
Min.7 min.
7°C
6°C
3°C
0°C
COMPRESSOR
ON
ON
ON
ON
ON
OFF
ON
OUTDOOR FAN
ON
OFF
ON
OFF
ON
OFF
ON
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12. Forced Operation
• If you lose wireless remote controller, you can operate the unit with forced operation switch.
• The standard conditions are as following.
Heat pump Model
Room Temp.
≥
24°C
21°C
≤
Room Temp. < 24°C
Room Temp. < 21°C
Cooling
Soft Dry
Heating
High
Softe Dry Rule
High
22°C
23°C
24°C
Cooling Model
Operation Mode
Cooling
FAN Speed
High
Setting Temp.
22°C
• Unit operation in low fan mode for first 15 seconds, then switched to proper operation mode according to intake
Air temperature.
Open the front
panel upward
panel upward
Slide Switch
Slide Switch
FORCED
OPERATION
OPERATION
AUTO
RESTART
RESTART
REMOTE
CONTROL
CONTROL
If you want to stop operation, put the Slide Switch on the
AUTO RESTART or the REMOTE CONTROL.
AUTO RESTART or the REMOTE CONTROL.
13. Auto Restarting Operation
• In case the power comes again after the power
failure, Auto Restarting Operations the function to
operate procedures automatically to the previous
operating conditions.
operate procedures automatically to the previous
operating conditions.
• If you want to use this operation, open the front panel
upward and put the Slide Switch on the AUTO
RESTART.
RESTART.
• If you do not want to use this operation, put the Slide
Switch on the REMOTE CONTROL.
Slide Switch
Slide Switch
Open the front
panel upward
panel upward
FORCED
OPERATION
OPERATION
AUTO
RESTART
RESTART
REMOTE
CONTROL
CONTROL
When you are out for hours, put the Slide Switch on the
REMOTE CONTROL.
REMOTE CONTROL.
• Cooling, Soft Dry, Fan, Heating
• Sleep Mode
• Timer Mode
• Hot-start, Deice, Compressor running
• BUZZER SOUND
• Power Input or Reset
: One short beep.
• Operation Stop
: One long beep.
• Remote Controller Key Input Except Operation Stop Key: Two Short beep.
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Display Function
Self-diagnosis Function
Operation Indicator
Sleep timer Indicator
Timer Indicator
Deice Indicator or
comp. running indicator
comp. running indicator
: Cooling & Heating Model only
: Cooling Model only
OUT
DOOR
CODE NO.
DIAGNOSIS
Operation Indicator LED Blinks
Unit Operation
¤
Once
Still Operation
¤Ł
Outdoor pipe thermistor Short/Open
Twice
Outdoor Unit Off
¤Ø
5 times
Stop
¤Œ
Indoor fan locked
8 times
Stop
Indoor room temperature thermistor or
pipe temperature thermistor Short/Open
pipe temperature thermistor Short/Open
Communication failure between indoor and
outdoor
outdoor
• LED blinks as many times as code No. (0.5 second ON/0.5 second OFF) with 3 second intervals.
• While the unit is off, no indication displays.
• If more than one code occurs simultaneously, bigger code No. is displayed.
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