DOWNLOAD LG LM-1963H2L Service Manual ↓ Size: 7.73 MB | Pages: 127 in PDF or view online for FREE

Model
LM-1963H2L
Pages
127
Size
7.73 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
lm-1963h2l.zip
Date

LG LM-1963H2L Service Manual ▷ View online

–16–
• 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
–17–
5. Wiring Connection
• Open the control box cover and connect the Remote control cord and Indoor power wires.
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
NOMINAL
CROSS-SECTIONAL
AREA 8.0mm
2
Ø7.5mm
Ø20.0mm
20mm
GN/YL
NOMINAL
CROSS-SECTIONAL
AREA 0.75mm
2
Remote control
cord
Control 
box cover
Control box cover
fitting screw (4 units)
[Air inlet side view]
Wire taking inlet
Indoor Power wires
Terminal Block of Indoor Unit
A-Unit
3(N) 4(L)
5
6
7
Terminal Block of Indoor Unit
B-Unit
3(N) 4(L)
5
6
7
1
2 3(N) 4(L)
3(N)
4(L)
5
6
Terminal Block of Outdoor Unit
Terminal Block of 
Outdoor Unit
Power Cord
Make sure that the screws of the terminal are free from looseness.
WARNING
If the supply cord is damaged, it must be replaced by a special cord or assembly
availible from the manufacturer or its service agent.
–18–
1. All wiring must comply with LOCAL REGULATIONS.
2. Select a power source that is capable of supplying the current required by the air conditioner.
3. Feed the power source to the unit via a distribution switch board designed for this purpose.
4. The terminal screws inside the control box may be loose due to vibration during transport. 
Check the screws for loose connection. 
(Running the air conditioner with loose connection can overload and damage electrical components.)
5. Always ground the air conditioner with a grounding wire and connector to meet the LOCAL REGULATION.
Main power source
Switch box
Circuit Breaker
Use a 40A circuit breaker or time delay fuse.
Refrigerant pipe
ELECTRICAL WIRING
–19–
• Preparation of Piping
6. Connecting Pipes to the Indoor Unit
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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