LG LB-D2460HL Service Manual ▷ View online
Intake Air temp.
Setting temp.+3°C
(Compressor OFF)
Setting temp.
(Compressor ON)
(Compressor ON)
INDOOR FAN
Low
OFF Low
Low
OFF
COMPRESSOR
ON
OFF
ON
OFF
ƒU
A point; While the indoor Heat-Exchanger temperature is higher than 40°C fan operates at low speed, when
it becomes lower than 40˚C fan stops.
ƒU
B point; When the indoor Heat-Exchanger temperature is higher than 51°C, fan operates at seleted fan
speed, when it becomes lower than 48°C, the fan operates at low speed.
–10–
4. Heating Mode Operation (Except Cooling Model)
The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Hot Start
Low
Selecting
Fan Speed
minimum 3min
Selecting fan
speed
minimum
10sec.
1min
A
A
minimum
1min.
minimum
10sec.
B
5. Hot-Start Control
ƒU
The indoor fan stops until the evaporator piping temperature will be reached to 28°C.
ƒU
The operation diagram is as following.
PIPING
TEMPERATURE
TEMPERATURE
1min
COMPRESSOR
INDOOR FAN
ON
26
°
C
: Selected Fan
: Low Fan
: Fan Stop
28
°
C
–11–
6. Defrost Control
• Defrost operation is controlled by timer and sensing the outdoor piping temperature.
• The defrost starts only when the outdoor pipe temperature falls below -6°C after 45 minutes passed from starting
• The defrost starts only when the outdoor pipe temperature falls below -6°C after 45 minutes passed from starting
of heating operation.
• Defrost ends after 5 minutes passed from starting of defrost operation or when the outdoor pipe
temperature rises over 12°C even if before 12 minutes.
More than 45 minutes of
heating operation
More than 10 min.
running of compressor
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
12minutes
Defrost
Defrost
More than 45 minutes of
heating operation
More than 10 min.
running of compressor
7. 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.
Remote controller LCD
Accident Point
F
1
Indoor temperature thermistor error
F2
Indoor piping thermistor error
F3
Indoor unit & remote controller
–12–
Installation of Indoor, Outdoor Unit
1. Selection of the best location
1) Indoor unit
Select location
Install the air conditioner in the location that satis-
fies the following conditions.
• The place shall easily bear a load exceeding four
Install the air conditioner in the location that satis-
fies the following conditions.
• The place shall easily bear a load exceeding four
times the indoor unit’s weight.
• The place shall be able to inspect the unit as the
figure.
• The place where the unit shall be leveled.
• The place shall allow easy water drainage.(Suit-
• The place shall allow easy water drainage.(Suit-
able dimension “H” is necessary to get a slope to
drain as figure.)
drain as figure.)
• The place shall easily connect with the outdoor
unit.
• The place where the unit is not affected by an
electrical noise.
• The place where air circulation in the room will be
good .
• There should not be any heat source or steam
near the unit.
2) Outdoor unit
• If an awning is built over the unit to prevent direct
sunlight or rain exposure, be careful that heat
radiation from the condenser is not restricted.
radiation from the condenser is not restricted.
• There should not be any animals or plants which
could be affected by hot air discharged.
• Ensure the spaces indicated by arrows from the
wall, ceiling, fence or other obstacles.
More than
30cm
30cm
More than
30cm
30cm
More than
70cm
70cm
Fence or
obstacles
Sunroof
H
600
600
Top view
(unit: mm)
Front view
Front
Inspection hole
(600X600)
Control box
1000
–13–
Indoor unit
Outdoor unit
B
A
• If 24K Model is installed at a distance of 15m, 450g of
refrigerant should be added (15-7.5) x 60g = 450g
• Capacity is based on standard length and maximun
allowance length is on the basis of reliability.
NOTE:
• Throughly study the following installation locations:
1. In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the
fan, the fin of the heat exchanger, resulting in heat exchange reduction, spraying, dispersing of water
drops, etc.
In these cases, take the following actions:
• Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient
drops, etc.
In these cases, take the following actions:
• Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient
capacity so that it draws oily steam which should not flow into the suction of the air conditioner.
• Make enough distance from a cooking room to install the air conditioner in such a place where it
may not suck in oil steam.
2. Avoid installing air conditioner in such circumstances where cutting oil mist or iron powder is in sus-
pension in factories, etc.
3. Avoid places where inflammable gas is generated, flows in, is stored or vented.
4. Avoid places where sulfurous acid gas or corrosive gas is generated.
5. Avoid places near high frequency generators.
3) Piping length and the elevation
MODEL
24K BTU
5/8"
3/8"
5
25
Gas
Liquid
5
8
60
Elevation B(m)
Length A(m)
* Additional
refrigerant
(g/m)
Pipe Size
(Diameter: Ø)
Standard
Standard
Max.
Max.
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