LG LV-B1861HL Service Manual ▷ View online
–34–
1) Connecting cables to the Indoor Unit
1) Remove the Air guide - L by loosening 2
screws after removing the Inlet grille from the
Indoor unit.
Indoor unit.
2) Connect the wires to the terminals on the con-
trol board individually according to the outdoor
unit connection.
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
those of indoor unit respectively
R
AIR GUIDE-L
INDOOR UNIT
Control
Panel
1
2
Clamp
Terminals on the indoor unit
POWER
INPUT
GN/YL
POWER
INPUT
GN/YL
Terminals on the indoor unit 1(L) 2(N)
3
4
Terminals on the outdoor unit
3
4
Terminals on the outdoor unit
3
4
5
6
7
1(L) 2(N)
3
4
5
6
7
8
• Cooling & Heating type
• Cooling only type
NORMAL CROSS-
SECTIONAL AREA
• 2.5mm
SECTIONAL AREA
• 2.5mm
2
(24K)
• 2.0mm
2
(18K:for the Middle East)
• 1.5mm
2
(18K:for the other area)
NORMAL CROSS-
SECTIONAL AREA
• 2.5mm
SECTIONAL AREA
• 2.5mm
2
(24K)
• 2.0mm
2
(18K:for the Middle East)
• 1.5mm
2
(18K:for the other area)
NORMAL
CROSS-
SECTIONAL
AREA
0.75mm
CROSS-
SECTIONAL
AREA
0.75mm
2
The power cord connected to the
indoor unit should be complied with
the following specifications
(Type H05VV-F(Indoor)
approved by HAR or SAA).
indoor unit should be complied with
the following specifications
(Type H05VV-F(Indoor)
approved by HAR or SAA).
The power connecting cable
connected between the indoor and
outdoor unit should be complied
with the following specifications
(Type H07RN-F approved by HAR or SAA).
connected between the indoor and
outdoor unit should be complied
with the following specifications
(Type H07RN-F approved by HAR or SAA).
The connecting cable connected
between the indoor and outdoor unit
should be complied with the
following specifications
(Type H07RN-F approved by HAR or SAA).
between the indoor and outdoor unit
should be complied with the
following specifications
(Type H07RN-F approved by HAR or SAA).
CAUTION
Ø8.0mm
Ø10.0mm
Ø8.0mm
Ø10.0mm
Ø6mm
6. Connecting Cables between Indoor Unit and Outdoor Unit
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.
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 oth-
er 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.
–35–
3) Connecting the cable to Outdoor Unit
1. Remove the Cover control from the unit by loosening
a screw.
Connect the wires to the terminals on the control
board individually as following.
Connect the wires to the terminals on the control
board individually as following.
2. Secure the cable onto the control board with the hold-
er (clamper).
3. Refix the cover control to the original position with the
screw.
4. Use a recongnized circuit breaker 20A(18K, 24K)
between the power source and the unit. A disconnec-
tion device to adequately disconnect all supply lines
must be fitted.
tion device to adequately disconnect all supply lines
must be fitted.
CAUTION
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power specialized for the air conditioner. As for the method of wiring,
be guided by the circuit diagram pasted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from
vibrations to which the unit is subjected during the course of transportation. Check them and
make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the
wires.)
make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the
wires.)
4) Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked
on the name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Never fail to equip a leakage breaker where it is wet or moist.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the
normal function of a overload protection device.
• Proper starting power is not given to the compressor.
10) The means for disconnection from a power supply shall be incorporated in the fixed wiring and
have an air gap contact separation of at least 3mm in each active(phase) conductors.
Outdoor unit
Terminal block
Connecting
cable
cable
Cover control
Holder for
connecting
cable
connecting
cable
Over 5mm
Holder for
power supply
cord
power supply
cord
Power supply
cord
cord
–36–
4) Form the pipings
1. Wrap the connecting portion of indoor unit with
the Insulation material and secure it with two
Plastic Bands. (for the right pipings)
Plastic Bands. (for the right pipings)
• If you want to connect an additional drain hose, the
end of the drain-outlet should keep distance from the
ground. (Do not dip it into water, and fix it on the wall
to avoid swinging in the wind.)
ground. (Do not dip it into water, and fix it on the wall
to avoid swinging in the wind.)
2. Tape the Pipings, drain hose and Connecting
Cable from bottom to top.
3. Form the pipings gathered by taping along the
exterior wall and fix it onto the wall by saddle or
equivalent.
equivalent.
2. Tape the Pipings and Connecting cable from
bottom to top.
3. Form the pipings gathered by taping along the
exterior wall, and make the trap prevent water
from entering into the room.
from entering into the room.
4. Fix the pipings onto the wall by saddle or
equivalent.
In case of the Outdoor unit being installed
below position of the Indoor unit.
below position of the Indoor unit.
In case of the Outdoor Unit being installed
above position of the Indoor Unit.
above position of the Indoor Unit.
Trap is required to prevent water from entering
into electrical parts.
into electrical parts.
Seal a small opening
around the pipings
with gum type sealer.
around the pipings
with gum type sealer.
Taping
Drain hose
Pipings
Connecting
cable
cable
Plastic Band
Power supply
cord
cord
Seal a small opening
around the pipings
with gum type sealer.
around the pipings
with gum type sealer.
Trap
–37–
The air which contains moisture remaining in the refrig-
eration cycle may cause a malfunction on the compres-
sor.
eration cycle may cause a malfunction on the compres-
sor.
1. Remove the caps from the gas side and liquid side
valves.
2. Remove the service-port cap from the gas side valve.
3. Turn the valve stem of liquid side valve counter-clock-
3. Turn the valve stem of liquid side valve counter-clock-
wise approx. 90° and hold it there for ten seconds, then
close it.
close it.
4. Check a gas-leakage of the connecting portion of the
pipings.
CAUTION : Do not leak the gas in the air during air purg-
ing. Use vacuum pump as far as possible.
7. Air Purging of the Pipes and Indoor Unit
Outdoor unit
Cover control
To indoor unit
Liquid side
Liquid side
Gas side
2-way valve or
3-way valve
(open)
3-way valve
(Close)
Cap
Service port cap
Hexagonal
wrench
wrench
No leakage found
leakage found
Result
leakage persists
leakage ceased
leakage ceased
5. To open liquid side valve again, turn the valve
stem counter-clockwise until it stops.
stem counter-clockwise until it stops.
6. To purge the air, push the pin on the service port
of gas side valve for three seconds with a
hexagonal wrench and set it free for one minute.
Repeat this three times.
of gas side valve for three seconds with a
hexagonal wrench and set it free for one minute.
Repeat this three times.
• Re-tighten the connecting portion with torque
wrenches.
wrenches.
Repair
7. Set the both liquid and gas side valves to open position
with the Hexagonal wrench for the unit operation.
NOTE:
The additional gas for air purging has been charged in the outdoor unit.
However, if the flare connections have not been done correctly and there gas leaks, a gas cylinder and
the charge set will be needed.
However, if the flare connections have not been done correctly and there gas leaks, a gas cylinder and
the charge set will be needed.
CAUTION : Do not leak the gas in the air during air purging.
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