LG | LUU187HV.EWGBEUS | LG LUU187HV.EWGBEUS Owner's manual

ENGLISH
FRANÇAIS
ESPAÑOL
INSTALLATION MANUAL
AIR CONDITIONER
• Please read this installation manual completely before installing the product.
• Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
• Please retain this installation manual for future reference after reading it
thoroughly.
TYPE : Standard inverter
www.lg.com
P/NO : MFL67448507
Single A Air Conditioner Installation Manual
CONTENTS
Safety Precautions ..............................................................................................3
Installation of Outdoor Unit................................................................................6
Wiring Connection...............................................................................................8
Connecting Pipes ..............................................................................................11
Leakage test and Evacuation ...........................................................................17
Test running .......................................................................................................19
Function..............................................................................................................20
Self-diagnosis Function....................................................................................21
Installation Guide at the Seaside .....................................................................22
2 Air Conditioner
Safety Precautions
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
n The meanings of the symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
n Installation
Always perform grounding.
Donʼt use a power cord, a
plug or a loose socket which
is damaged.
• Otherwise, it may cause electrical shock.
• Otherwise, it may cause a fire
or electrical shock.
Securely attach the electrical
part cover to the indoor unit
and the service panel to the
outdoor unit.
Be sure to install an earth
leakage breaker.
• If the electrical part cover of the indoor
unit and the service panel of the outdoor unit are not attached securely, it
could result in a fire or electric shock
due to dust, water, etc.
• Failure to install an earth leakage breaker may result in electric shocks or fire.
Ensure that an installation frame of the outdoor unit is not damaged due to use for a long
time.
• It may cause injury or an accident.
For installation of the product,
always contact the service center or a professional installation
agency.
• Otherwise, it may cause a fire, electrical shock, explosion or injury.
Do not keep or use flammable
gases or combustibles near
the air conditioner.
• Otherwise, it may cause a fire
or the failure of product.
Do not disassemble or repair the product randomly.
• It will cause a fire or electrical shock.
Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress air or Oxygen and do not use Flammable gases. Otherwise, it may cause fire or explosion.
• There is the risk of death, injury, fire or explosion.
Installation Manual 3
ENGLISH
Safety Precautions
To prevent the injury of the user or other people and property damage, the following instructions
must be followed.
n Be sure to read before installing the air conditioner.
n Be sure to observe the cautions specified here as they include important items related to safety.
n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
Safety Precautions
Do not install the product at a place that there
is concern of falling down.
• Otherwise, it may result in personal injury.
Use caution when unpacking and installing.
• Sharp edges may cause injury.
■ Operation
Do not share the outlet with
other appliances.
• It will cause an electric shock
or a fire due to heat generation.
Do not use the damaged
power cord.
• Otherwise, it may cause a fire
or electrical shock.
Do not modify or extend the
power cord randomly.
• Otherwise, it may cause a fire
or electrical shock.
Take care so that the power
cord may not be pulled during operation.
Unplug the unit if strange
sounds, smell, or smoke
comes from it.
• Otherwise, it may cause a fire
or electrical shock.
• Otherwise, it may cause electrical shock or a fire.
• Otherwise, it may cause a fire.
Do not use the power cord
near the heating tools.
Do not open the suction
inlet of the indoor/outdoor
unit during operation.
Take the power plug out if
necessary, holding the head
of the plug and do not touch
it with wet hands.
• Otherwise, it may cause a fire
or electrical shock.
Do not allow water to run
into electrical parts.
• Otherwise, it may cause a fire
and electrical shock.
Hold the plug by the head
when taking it out.
• Otherwise, it may cause the
• It may cause electric shock
failure of machine or electrical
and damage.
shock.
Do not step on the indoor/outdoor unit and
do not put anything on it.
• It may cause an injury through dropping of the
unit or falling down.
When the product is submerged into water,
always contact the service center.
• Otherwise, it may cause a fire or electrical
shock.
4 Air Conditioner
Keep the flames away.
• Otherwise, it may electrical
shock and failure.
Never touch the metal parts
of the unit when removing
the filter.
• They are sharp and may
cause injury.
Do not place a heavy object on the power
cord.
• Otherwise, it may cause a fire or electrical
shock.
Take care so that children may not step on
the outdoor unit.
• Otherwise, children may be seriously injured
due to falling down.
Safety Precautions
ENGLISH
■ Installation
Install the drain hose to ensure that drain
can be securely done.
• Otherwise, it may cause water leakage.
Always inspect gas leakage after the installation and repair of product.
• Otherwise, it may cause the failure of product.
Install the product so that the noise or hot
wind from the outdoor unit may not cause
any damage to the neighbors.
• Otherwise, it may cause dispute with the neighbors.
Keep level parallel in installing the product.
• Otherwise, it may cause vibration or water
leakage.
■ Operation
Avoid excessive cooling and perform ventilation sometimes.
• Otherwise, it may do harm to your health.
Do not use an appliance for special purposes
such as preserving animals vegetables, precision machine, or art articles.
• Otherwise, it may damage your properties.
Use a soft cloth to clean. Do not use wax,
thinner, or a strong detergent.
• The appearance of the air conditioner may
deteriorate, change color, or develop surface
flaws.
Do not place obstacles around the flow inlet
or outlet.
• Otherwise, it may cause the failure of appliance or an accident.
Installation Manual 5
Installation of Outdoor Unit
Installation of Outdoor Unit
1. Installation Places
• If an awning is built over the unit to prevent
direct sunlight or rain exposure, make sure
that heat radiation from the condenser is not
restricted.
• Ensure that the spaces indicated by arrows
around front, back and side of the unit.
• Do not place animals and plants in the path of
the warm air.
• Take the air conditioner weight into account
and select a place where noise and vibration
are minimum.
• Select a place so that the warm air and noise
from the air conditioner do not disturb neighbors.
Su
nro
of
More than
300mm
More than
300mm
Fe
ob nce
sta or
cle
s
More than 600mm
More than 700mm
Unit : mm
2. Piping length and the elevation
Model
Capacity
Pipe Size
mm(inch)
Standard
Max.
Standard
Max.
Additional
refrigerant Unit
: g/m(oz/ft)
AUUW18GD2(LUU187HV)
5.2kW
Ø15.88(5/8) Ø9.52(3/8)
7.6(25)
50(164)
5(16)
30(98)
40(0.43)
AUUW24GD2(LUU247HV)
7kW
Gas
Liquid
Length A
Unit : m(ft)
Elevation B
Unit : m(ft)
Ø15.88(5/8) Ø9.52(3/8)
7.6(25)
50(164)
5(16)
30(98)
40(0.43)
AUUW36GD2(LUU367HV) 10.5kW Ø15.88(5/8) Ø9.52(3/8)
7.6(25)
75(246)
5(16)
30(98)
40(0.43)
AUUW42GD2(LUU427HV) 12.5kW Ø15.88(5/8) Ø9.52(3/8)
7.6(25)
75(246)
5(16)
30(98)
40(0.43)
If installed tube is shorter than 7.6 m, additional charging is not necessary.
Additional Refrigerant = (A -7.6) x Additional refrigerant (g)
Indoor unit
Outdoor unit
A
B
6 Air Conditioner
A
Outdoor unit
Indoor unit
B
Installation of Outdoor Unit
ENGLISH
Night Silent Operation setting
1. Open the Side panel or Top Cover of outdoor unit.
2. Set the SW01N (PIP SW2).
6
AUUW18GD2 / AUUW24GD2
(LUU187HV / LUU247HV)
AUUW36GD2 / AUUW42GD2
(LUU367HV / LUU427HV)
SW01N
SW01N
6
3. Close the Side panel or Top Cover.
AUUW18GD2 / AUUW24GD2
(LUU187HV / LUU247HV)
AUUW36GD2 / AUUW42GD2
(LUU367HV / LUU427HV)
Installation Manual 7
Wiring Connection
Wiring Connection
Electrical Wiring
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 supplying the current required by the air conditioner.
• Use a recognized ELCB(Electric Leakage Circuit Breaker) between the power source and
the unit. A disconnection device to adequately
disconnect all supply lines must be fitted.
• Model of circuit breaker recommended by
authorized personnel only
Model
Phase(Ø)
ELCB
AUUW18GD2(LUU187HV)
1
30A
AUUW24GD2(LUU247HV)
1
30A
AUUW36GD2(LUU367HV)
1
40A
AUUW42GD2(LUU427HV)
1
40A
ELCB
Main
power source
Switch box
Outdoor
Indoor
Connecting Cables between Indoor Unit and Outdoor Unit
Outdoor
unit
Indoor
unit
3
2
1
3
2
1
CAUTION
The power cord connected to the outdoor unit should be complied
withIEC 60245 or HD 22.4 S4 (This equipment shall be provided with a
cord set complying with the national regulation.
10±3mm
10±3mm
35
m
±5
The connecting cable connected to the outdoor unit should be
complied with IEC 60245 or HD 22.4 S4 (This equipment shall be
provided with a cord set complying with the national regulation.)
Model
m
GN
/YL
20
mm
AUUW18GD2
(LUU187HV)
AUUW24GD2
(LUU247HV)
AUUW36GD2
(LUU367HV)
AUUW42GD2
(LUU427HV)
Phase(Ø) Area(mm2)
1
2.5
1
2.5
1
5
35
m
±5
m
NORMAL
CROSS-SECTIONAL
AREA 0.75mm2
GN
/YL
20
mm
When the connection line between the indoor unit and
1
5
outdooor unit is over 40m, connect the telecommunication
line and power line separately.
If the supply cord is damaged, it must be replaced by a special cord or assembly availible from the manufacturer of its service agent.
8 Air Conditioner
Wiring Connection
ENGLISH
◆ Precautions when laying power wiring
Use round pressure terminals for connections to the power terminal block.
Round pressure terminal
Power wire
When none are available, follow the instructions below.
• Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power
wiring may cause abnormal heat.)
• When connecting wiring which is the same thickness, do as shown in the figure below.
• For wiring, use the designated power wire and connect firmly, then secure to prevent outside pressure being exerted on the terminal block.
• Use an appropriate screwdriver for tightening the terinal screws. A screwdriver with a small head
will strip the head and make proper tighterning impossible.
• Over-tightening the terminal screws may break them.
Installation Manual 9
Wiring Connection
Connecting the cable to Outdoor Unit
• Remove the side panel for wiring connection.
• Use the cord clamp to fix the cord.
• Earthing work
- Connect the cable of diameter more to the earthing terminal provided in the control
box and do earthing.
Main
Terminal
Block
Cord clamp
Cord clamp
* Make sure the rubber bushes are
properly used in knock-out holes after
connecting main power.
CAUTION:
• The circuit diagram is not subject to change without notice.
• Be sure to connect wires according to the wiring diagram.
• Connect the wires firmly, so that not to be pulled out easily.
• Connect the wires according to color codes by referring the wiring diagram.
CAUTION:
• The Power cord connected to the unit should be selected according to the following specifications.
10 Air Conditioner
Connecting Pipes
ENGLISH
Connecting Pipes
Preparation of Piping
Main cause of gas leakage is defect in flaring
work. Carry out correct flaring work in the following procedure.
Copper
tube
Slanted Uneven Rough
90
Cut the pipes and the cable.
• Use the accessory piping kit or the pipes
purchased locally.
• Measure the distance between the indoor
and the outdoor unit.
• Cut the pipes a little longer than measured
distance.
• Cut the cable 1.5m longer than the pipe
length.
Pipe
Reamer
Point down
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.
Flare nut
Copper tube
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)
Handle
Flaring work
• Carry out flaring work using dedicated flaring tool for R-410A as shown below.
Outside diameter
mm
inch
Ø6.35
1/4
Ø9.52
3/8
Ø12.7
1/2
Ø15.88
5/8
"A"
mm
1.1~1.3
1.5~1.7
1.6~1.8
1.6~1.8
Firmly hold copper tube in a bar(or die) as
indicated dimension in the table above.
Bar
Bar
"A"
Yoke
Cone
Copper pipe
Clamp handle
Red arrow mark
Smooth all round
Inside is shining without scratches
= Improper flaring =
Check
• Compare the flared work with figure below.
• If flare is noted to be defective, cut off the
flared section and do flaring work again.
Even length
all round
Inclined Surface Cracked Uneven
damaged
thickness
Installation Manual 11
Connecting Pipes
Plumbing materials and storage methods
Pipe must be able to obtain the specified thickness and should be used with low impurities.
Also when handling storage, pipe must be careful to prevent a fracture, deformity and wound.
Should not be mixed with contaminations such as dust, moisture.
Refrigerant piping on three principles
Drying
Cleanliness
Airtight
Should be no moisture inside
No dust inside.
There is no refrigerant leakage
Moisture
Items
Dust
Leakage
Cause failure
- Significant hydrolysis of refrigerant oil
- Degradation of refrigerant oil
- Poor insulation of the compressor
- Do not cold and warm
- Clogging of EEV, Capillary
- Degradation of refrigerant oil
- Poor insulation of the compressor
- Do not cold and warm
- Clogging of EEV, Capillary
- Gas shortages
- Degradation of refrigerant oil
- Poor insulation of the compressor
- Do not cold and warm
Countermeasure
- No moisture in the pipe
- Until the connection is completed, the plumbing pipe entrance
should be strictly controlled.
- Stop plumbing at rainy day.
- Pipe entrance should be taken
side or bottom.
- When removal burr after cutting
pipe, pipe entrance should be
taken down.
- Pipe entrance should be fitted
cap when pass through the
walls.
- No dust in the pipe.
- Until the connection is completed, the plumbing pipe entrance
should be strictly controlled.
- Pipe entrance should be taken
side or bottom.
- When removal burr after cutting
pipe, pipe entrance should be
taken down.
- Pipe entrance should be fitted
cap when pass through the
walls.
- Airtightness test should be.
- Brazing operations to comply
with standards.
- Flare to comply with standards.
- Flange connections to comply
with standards.
12 Air Conditioner
Connecting Pipes
Welding, as when heating without nitrogen substitution a large amount of the oxide film is formed
on the internal piping.
The oxide film is a caused by clogging EEV, Capillary, oil hole of accumulator and suction hole of oil
pump in compressor.
It prevents normal operation of the compressor.
In order to avoid this problem, Welding should be done after replacing air by nitrogen gas.
When welding plumbing pipe, the work is required.
◆How to work
Regulator
Welding Point
Oxide scale
Note) should not block the outlet side.
When the internal pressure in pipe is abo
ve the atmospheric pressure, pinhole is o
ccurred and it is a leakage cause.
Taping
(Should not
contain air)
Auxiliary valve
Nitrogen
Nitrogen gas
Pressure 0.02MPa less
CAUTION:
1. Always use the nitrogen.(not use oxygen, carbon dioxide, and a Chevron gas):
Please use the following nitrogen pressure 0.02MPa
Oxygen --------- Promotes oxidative degradation of refrigerant oil.
Because it is flammable, it is strictly prohibited to use
Carbon dioxide --- Degrade the drying characteristics of gas
Chevron Gas ---- Toxic gas occurs when exposed to direct flame.
2. Always use a pressure reducing valve.
3. Please do not use commercially available antioxidant.
The residual material seems to be the oxide scale is observed.
In fact, due to the organic acids generated by oxidation of the alcohol contained in the
anti-oxidants, ants nest corrosion occurs. (causes of organic acid ’ alcohol + copper +
water + temperature)
Installation Manual 13
ENGLISH
Nitrogen substitution method
Connecting Pipes
Connecting the pipes to the Outdoor unit
• Align the center of the piping and sufficiently
tighten the flare nut by hand.
Continuous
• Finally, tighten the flare nut with torque wrench
until the wrench clicks.
- When tightening the flare nut with torque
wrench, ensure the direction for tightening
follows the arrow on the wrench.
Outside diameter
mm
inch
Ø6.35
1/4
Ø9.52
3/8
Ø12.7
1/2
Ø15.88
5/8
Torque
N.m
16±2
38±4
55±6
75±7
Torque wrench
Outdoor unit
h When tighten the pipe, hold the haxagonal
body.
<Figure 1>
Backward
Sideways
Forward
Downward
14 Air Conditioner
Connecting Pipes
ENGLISH
• When connecting in a downward direction, knock
out the knock-out hole of the base pan.
(refer to figure 2)
<Figure 2>
Knock-out
Preventing foreign objects from entering
(Figure3)
Base pan
<Figure 3>
• Plug the pipe through-holes with putty or insulation material(procured locally)to stop up all
gaps,as shown in the figure 3.
Liquid side piping
Gas side piping
Drain hose
CAUTION:
Insects or small animals entering the
outdoor unit may cause a short circuit
in the electrical box.
Communication
cable
Refrigerant pipe
Putty or insulating material
(produced locally)
Installation Manual 15
Connecting Pipes
Seal a small
opening around
the pipings with
gum type sealer.
Forming the piping
Form the piping by wrapping the
connecting portion of the indoor
unit with insulation material and
secure it with two kinds of vinyl
tape.
• If you want to connect an additional drain
hose, the end of the drain outlet should be
routed above the ground. Secure the drain
hose appropriately.
Plastic
band
Seal a small
opening around
the pipings with
gum type sealant.
sealer.
Taping
Drain hose
Plastic
band
Pipings
Connecting
cable
In cases where the outdoor unit is
installed below the indoor unit perform the following.
1. Tape the piping, drain hose and connecting
cable from down to up.
2. Secure the tapped piping along the exterior wall using saddle or equivalent.
In cases where the outdoor unit is
installed above the indoor unit perform the following.
1. Tape the piping and connecting cable from
down to up.
2. Secure the taped piping along the exterior
wall. Form a trap to prevent water entering
the room.
3. Fix the piping onto the wall by saddle or
equivalent.
Power supply
cord
• Trap is required to prevent water from entering
into electrical parts.
Seal a small opening
around the pipings
with gum type sealant.
sealer.
Trap
Seal a small opening
aroundTrap
the pipings
with gum type sealer.
Trap
16 Air Conditioner
Leakage test and Evacuation
Air and moisture remaining in the refrigerant system have undesirable effects as indicated below.
1. Pressure in the system rises.
2. Operating current rises.
3. Cooling(or heating) efficiency drops.
4. Moisture in the refrigerant circuit may freeze and block capillary tubing.
5. Water may lead to corrosion of parts in the refrigeration system.
Therefore, the indoor/outdoor unit and connecting tube must be checked for leak tight, and vacuumed to remove incondensible gas and moisture in the system.
Preparation
• Check that each tube(both liquid and gas side tubes) between the indoor and outdoor units have been
properly connected and all wiring for the test run has been completed. Remove the service valve caps
from both the gas and the liquid side on the outdoor unit. Check that both the liquid and the gas side service valves on the outdoor unit are kept closed at this stage.
Leakage test
• Connect the manifold valve(with pressure gauges)
and dry nitrogen gas cylinder to this service port
with charge hoses.
CAUTION: Be sure to use a manifold valve for leakage test.
If it is not available, use a stop valve for
this purpose. The "Hi" knob of the manifold valve must always be kept close.
• Pressurize the system to no more than 3.0
Mpa with dry nitrogen gas and close the cylinder valve when the gauge reading reached 3.0
MPa Next, test for leaks with liquid soap.
CAUTION: To avoid nitrogen entering the refrigerant system in a liquid
state, the top of the cylinder must be higher than its bottom when you pressurize the
system. Usually, the cylinder is used in a
vertical standing position.
1. Do a leakage test of all joints of the
tubing(both Indoor unit and outdoor unit) and
both gas and liquid side service valves.
Bubbles indicate a leak. Be sure to wipe off
the soap with a clean cloth.
2. After the system is found to be free of leaks,
relieve the nitrogen pressure by loosening
the charge hose connector at the nitrogen
cylinder. When the system pressure is
reduced to normal, disconnect the hose from
the cylinder.
Indoor unit
Outdoor unit
Manifold valve
Lo
Hi
Pressure
gauge
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
Installation Manual 17
ENGLISH
Leakage test and Evacuation
Leakage test and Evacuation
Evacuation
1. Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the
tubing and indoor unit.
Confirm the "Lo and Hi" knob of the manifold valve
is open. Then, run the vacuum pump.
The operation time for evacuation varies with tubing length and capacity of the pump. The following
table shows the time required for evacuation.
Indoor unit
Outdoor unit
Required time for evacuation when 30 gal/h
vacuum pump is used
If tubing length is longer
If tubing length is less
than 10 m(33 ft)
than 10 m(33 ft)
Gas pipe
30 min. or more
60 min. or more
0.07 kPa or less
2. When the desired vacuum is reached, close the "Lo
and Hi" knob of the manifold valve and stop the
vacuum pump.
Finishing the job
1. With a service valve wrench, turn the valve stem of
liquid side valve counter-clockwise to fully open the
valve.
2. Turn the valve stem of gas side valve counterclockwise to fully open the valve.
3. Loosen the charge hose connected to the gas side
service port slightly to release the pressure, then
remove the hose.
4. Replace the flare nut and its bonnet on the gas
side service port and fasten the flare nut securely
with an adjustable wrench. This process is very
important to prevent leakage from the system.
5. Replace the valve caps at both gas and liquid side
service valves and fasten them tight.
This completes air purging with a vacuum pump.
The air conditioner is now ready to test run.
18 Air Conditioner
Manifold valve
Lo
Pressure
gauge
Hi
Open
Vacuum pump
Open
Test running
ENGLISH
Test running
1. PRECAUTIONS IN TEST RUNNING
• The initial power supply must provide at least 90% of the rated voltage.
Otherwise, the air conditioner should not be operated.
CAUTION
① For test run, carry out the cooling operation firstly even during heating season. If heating operation is carried out firstly, it leads to the
trouble of compressor. Then attention must be paid.
② Carry out the test run more than 5 minutes without fail.
(Test run will be cancelled 18 minutes later automatically)
• The test run is started by pressing the room temperature checking button and down timer button for 3 seconds at the same time.
• To cancel the test run, press any button.
CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETE
• After completing work, be sure to measure and record trial run properties, and store measured
data, etc.
• Measuring items are room temperature, outside temperature, suction temperature, blow out temperature, wind velocity, wind volume, voltage, current, presence of abnormal vibration and noise,
operating pressure, piping temperature, compressive pressure.
• As to the structure and appearance, check following items.
□Is the circulation of air adequate?
□Is the draining smooth?
□Is the heat insulation complete
(refrigerant and drain piping)?
□Is there any leakage of refrigerant?
□Is the remote controller switch operated?
□Is there any faulty wiring?
□Are not terminal screws loosened?
M4......118N.cm{12kgf.cm} M5......196N.cm{20kgf.cm}
M6......245N.cm{25kgf.cm} M8......588N.cm{60kgf.cm}
2. Connection of power supply
1. Connect the power supply cord to the independent power supply.
• Circuit breaker is required.
2. Operate the unit for fifteen minutes or more.
3. Evaluation of the performance
1. Measure the temperature of the
intake and discharge air.
2. Ensure the difference between the
intake temperature and the discharge
one is more than 8°C (Cooling) or
reversely (Heating).
Thermometer
HAND OVER
Teach the customer the operation and maintenance procedures, using the operation manual.
(air filter cleaning, temperature control, etc.)
Installation Manual 19
Function
Function
Forced Cooling Operation
• Adding the refrigerant in winter.
Setting Procedure
1) Set the Dip Switch as follow after shutting the power source down.
6
AUUW18GD2 / AUUW24GD2
(LUU187HV / LUU247HV)
AUUW36GD2 / AUUW42GD2
(LUU367HV / LUU427HV)
2) Reset the power.
3) Red LED and Green LED of PCB lights during work.
(The indoor unit is operated by force.)
4) If operation is done, Red LED will be turned off.
If operation is not done normally, Red LED will blink.
5) Close the Liquid valve only after green LED turned off (7 minutes from the start of the machine).
Then close the gas valve after Green LED on.
WARNING:
• When the green LED of PCB is on, compressor is going to be off because of low
pressure.
• You should return the Dip Switch to operate normally after finishing the operation.
• Improper Pump down will lead to product turn off along with LED (green &red) off
with in 20 minutes from the initial start.
Pump Down Dip S/W Setting
Power on
(Red LED On, Green LED Off)
Comp on
(Red LED On, Green LED On)
Pump Down Start
(Red LED On, Green LED Off)
Liquid Valve Closed
Pump Down Complete
(Red LED Off, Green LED On)
Gas Valve Closed
Power off
(Red LED Off, Green LED On)
20 Air Conditioner
Self-diagnosis Function
ENGLISH
Self-diagnosis Function
Error Indicator (Outdoor)
2 Times
2 Times
Outdoor Error
Ex) Error 21 (DC Peack)
2 Times
LED01G
(RED)
1 Sec.
1 Sec.
1 Time
1 Sec.
1 Time
1 Time
LED02G
(GREEN)
2 Sec.
2 Sec.
AUUW18GD2(LUU187HV) / AUUW24GD2(LUU247HV)
Error Code
Description
AUUW36GD2(LUU367HV) / AUUW42GD2(LUU427HV)
LED 1
(Red)
LED 2
(Green)
Indoor
status
21
DC Peak(IPM Fault)
2times ◑
1time ◑
OFF
22
Max. CT(CT2)
2times ◑
2times ◑
OFF
23
DC Link Low Volt.
2times ◑
3times ◑
OFF
24
Pressure switch/Heater Sink.
2times ◑
4times ◑
OFF
26
DC Comp Position Error
2times ◑
6times ◑
OFF
27
PFC Fault Error
2times ◑
7times ◑
OFF
29
Comp Over Current
2times ◑
9times ◑
OFF
32
D-Pipe High(Inv.)
3times ◑
2times ◑
OFF
40
CT Sensor(Open/Short)
4times ◑
0
OFF
41
Inv. D-Pipe Th Error(Open/Short)
4times ◑
1time ◑
OFF
43
High Pressure Sensor(Open/Short)
4times ◑
3times ◑
OFF
44
Outdoor air Th Error(Open/Short)
4times ◑
4times ◑
OFF
45
Cond. Middle Pipe Th Error(Open/Short)
4times ◑
5times ◑
OFF
46
Suction Pipe Th Error(Open/Short)
4times ◑
6times ◑
OFF
48
Cond. Out-Pipe Th Error(Open/Short)
4times ◑
8time ◑
OFF
51
Capacity over
5times ◑
1times ◑
OFF
53
Communication Error(Indoor ÷ Outdoor)
5times ◑
3times ◑
OFF
60
EEPROM Error(Outdoor)
6times ◑
0
OFF
61
Cond. Middle Pipe High
6times ◑
1times ◑
OFF
62
Heatsink Error(High)
6times ◑
2times ◑
OFF
65
Heatsink Th Error(Open/Short)
6times ◑
5times ◑
OFF
67
BLDC motor fan lock(Outdoor)
6times ◑
7times ◑
OFF
If abnormal voltage is supplied, the protection circuits will turn off the product in order to prevent
the component damage. The product will automatically restart after 3 minutes.
Installation Manual 21
Installation Guide at the Seaside
Installation Guide at the Seaside
CAUTION:
1. Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.
2. Do not install the product where it could be exposed to sea wind (salty wind) directly. It can result corrosion
on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient performance.
3. If outdoor unit is installed close to the seaside, it should avoid direct exposure to the sea wind. Otherwise it
needs additional anticorrosion treatment on the heat exchanger.
Selecting the location(Outdoor Unit)
1) If the outdoor unit is to be installed close to the seaside, direct exposure to the sea wind should be avoided.
Install the outdoor unit on the opposite side of the sea wind direction.
Sea wind
Sea wind
2) In case, to install the outdoor unit on the seaside, set up a windbreak not to be exposed to the sea wind.
Windbreak
• It should be strong enough like concrete to prevent
the sea wind from the sea.
• The height and width should be more than 150% of
the outdoor unit.
Sea wind
• It should be keep more than 70 cm of space
between outdoor unit and the windbreak for easy
air flow.
3) Select a well-drained place.
• Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water
22 Air Conditioner
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