DOWNLOAD LG LB-F3680HL / LB-F3680CL Service Manual ↓ Size: 1.47 MB | Pages: 70 in PDF or view online for FREE

Model
LB-F3680HL LB-F3680CL
Pages
70
Size
1.47 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
lb-f3680hl-lb-f3680cl.zip
Date

LG LB-F3680HL / LB-F3680CL Service Manual ▷ View online

–18–
• Fix the under plate on the wall
• Separate the under plate from Remote control box.
• Fix the cord clamps on the wall by
Ø 3 tapping screws (accessory).
• Fix the remote control cord.
Remote control 
box body
Cord clamp
(accessory)
Lever carefully 
the box open 
using a screw 
driver, etc.
Front case
The lower part
Face of wall
Under plate
Screw (accessory)
4. Remote Controller Installation
• Although the room temperature sensor is in the indoor unit, the remote control box should be
installed in such places away from direct sunlight and high humidity.
Installation of the remote control box
• Select places that are not splashed with water.
• Select control position after receiving customer approval.
• The room temperature sensor of the thermostat for temperature control is built in the indoor unit.
• This remote controller equipped with liquid crystal display. If this position is higher or lower, display is difficult
to see.(The standard height is 1.2 ~ 1.5m high)
Routing of the remote control cord
• Keep the remote control cord away from the refrigerant piping and the drain piping.
• To protect the remote control cord from electrical noise, place the cord at least 5cm away from other power
cables (audio equipment, television set, etc.)
• If the remote control cord is secured to a wall, provide a trap at the top of the cord to prevent water droplets
from running.
REMOTE CONTROL BOX INSTALLATION
DISASSEMBLING
ELECTRICAL WIRING
 
Wire and make sure that teminal
numbers are matched on unit side and
remote controller side.
The maximum length of the cord is 100m.
If the length of the cord exceeds 50m,
use a wire size greater than 0.5mm
2
.
Remote controller
 Yellow, Red, Brown  
(Main board)
CN REMO
1) Connecting cables to the Indoor Unit 
Connect the wires to the terminals on the control board individually according to the outdoor unit connection.
• Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of indoor unit
respectively
36K BTU
• Cooling and Heating Type
• Cooling only Type
2) Clamping of cables
1) Arrange 2 power cables on the control panel.
2) First, fasten the steel clamp with a screw to the inner boss of control panel.
3) For the cooling model, fix the other side of the clamp with a screw strongly.
For the heat pump model, put the 0.75mm
2
cable(thinner cable) on the clamp and tighten it with a plastic
clamp to the other boss of the control panel.
4) In Australia, the length of power supply cord measured from the entry of the power supply cord to the middle
of live pin on the power plug should be over 1.8m.
The power cord connected to the outdoor unit should be
complied with the following specifications (Rubber
insulation, type H05RN-F approved by HAR or SAA).
The connecting cable connected to the indoor and outdoor
unit should be complied with the following specifications
(Rubber insulation, type H05RN-F approved by HAR or SAA).
CAUTION
20mm
GN/YL
NORMAL
CROSS-SECTIONAL
AREA 2.5mm
2
NORMAL
CROSS-SECTIONAL
AREA 0.75mm
2
20mm
GN/YL
–19–
MAIN POWER INPUT
Terminals on the indoor unit
1
2
4
5
3
Terminals on the outdoor unit
1
2
4
5
3
Terminals on the indoor unit
1
2
4
5
3
Terminals on the outdoor unit
1
2
4
5
3
R
S
N
T
5. Connecting Cables between Indoor Unit and Outdoor Unit
If the supply cord is damaged, it must be replaced by a special cord or assembly availible from the 
manufacturer of its service agent.
Make sure that the screws of the terminal are free from looseness.
WARNING
–20–
Outdoor
Indoor
Control terminal board
Control box
Control box cover
(On which the Electric
Wiring Connection is put)
Main terminal board
Control terminal board
Cover control
A
view
Remote
control cord
Connection
cord between 
the indoor unit
and the 
outdoor unit
Cord clamper
1
1
Main 
power source
Switch box
Circuit Breaker
ELECTRICAL WIRING
INDOOR UNIT
• Remove the control box cover for electrical con-
nection between the indoor and outdoor
unit.(Remove two screws 
.)
• Use the cord clamper to fix the cord.
Perform the electrical wiring work according to the electrical
wiring connection.
• All wiring must comply with local requirements.
• Select a power source that is capable of supply-
ing the current required by the air conditioner.
• Use a recognized circuit breaker 25A between
the power source and the unit. A disconnection
device to adequately disconnect all supply lines
must be fitted.
WIRING CONNECTION
OUTDOOR UNIT
• Remove the control cover for wiring connection.
• Use the cord clamper to fix the cord.
• Earthing work
Connect the cable of diameter 1.6mm
2
or more to
the earthing terminal provided in the control box
and do earthing.
¡
Please check !!
–21–
6. Connecting Pipes to the Indoor Unit
• Preparation of Piping
Main cause of gas leakage is defect in flaring work. 
Carry out correct flaring work in the following procedure.
1) Cut the pipes and the cable.
Use the accessory piping kit or the pipes purchased
locally.
Measure the distance between the indoor and the out-
door unit.
Cut the pipes a little longer than measured distance.
Cut the cable 1.5m longer than the pipe length.
2) Burrs removal
Completely remove all burrs from the cut cross section
of pipe/tube.
Put the end of the copper tube/pipe to downward
direction as you remove burrs in order to avoid to let
burrs drop in the tubing.
3) Putting nut on
Remove flare nuts attached to indoor and outdoor
units, than put them on pipe/tube having completed
burr removal.
(Not possible to put them on after flaring work)
4) Flaring work
Carry out flaring work using flaring tool as shown
below.
Firmly hold copper tube in a bar(or die) as indicated
dimension in the table above.
5) Check
Compare the flared work with figure below.
If flare is noted to be defective, cut off the flared sec-
tion and do flaring work again.
Copper
tube
90
°
Slanted   Uneven  Rough
Pipe
Reamer
Point down
Flare nut
Copper tube
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Inclined
Inside is shining without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Outside diameter
A
mm
inch
mm
Ø9.52
3/8
0.5~0.8
Ø15.88
5/8
0.8~1.0
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