LG AVUQ36GM1A0 INSTALLATION MANUAL

P/NO : MFL67448522

INSTALLATION MANUAL

AIR
CONDITIONER

www.lg.com

• 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.

Single

ENGLISH ESPAÑOL

PORTUGUÊS

2

TIPS FOR SAVING ENERGY

ENGLISH

• Do not cool excessively indoors. This may be harmful to your health and may consume more elec­tricity.

• Block sunlight with blinds or curtains while you are operating the air conditioner.

• Keep doors or windows closed tightly while you are operating the air conditioner.

• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.

• Speed up the fan to cool or warm indoor air quickly, in a short period of time.

• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air condition­er is used for many hours.

• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the
air flow or weaken the cooling / dehumidifying functions.

For your records

Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:

Model number :

Serial number :

You can find them labeled on the side of each unit.

Dealer’s name :

Date of purchase :

Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:

TIPS FOR SAVING ENERGY

IMPORTANT SAFETY INSTRUCTIONS

3

ENGLISH

IMPORTANT SAFETY INSTRUCTIONS

READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.

Always comply with the following precautions to avoid dangerous situations and ensure peak
performance of your product

WARNING

It can result in serious injury or death when the directions are ignored

CAUTION

It can result in minor injury or product damage when the directions are ignored

WARNING

• Installation or repairs made by unqualified persons can result in hazards to you and others.

• Installation work must be performed in accordance with the National Electric Code by quali­fied and authorized personnel only.

• The information contained in the manual is intended for use by a qualified service technician
familiar with safety procedures and equipped with the proper tools and test instruments.

• Failure to carefully read and follow all instructions in this manual can result in equipment mal­function, property damage, personal injury and/or death.

Installation

• Always perform grounding. Otherwise, it may cause electrical shock.

• Don’t use a power cord, a plug or a loose socket which is damaged. Otherwise, it may cause a fire
or electrical shock.

• 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.

• Securely attach the electrical part cover to the indoor unit and the service panel to the outdoor unit.
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.

• Always install an air leakage breaker and a dedicated switching board. No installation may cause a
fire and electrical shock.

• Do not keep or use flammable gases or combustibles near the air conditioner. Otherwise, it may
cause a fire or the failure of product.

• 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.

• 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.

• 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.

• Do not turn on the breaker or power under condition that front panel, cabinet, top cover, control box
cover are removed or opened. Otherwise, it may cause fire, electric shock, explosion or death.

!

!

!

4

IMPORTANT SAFETY INSTRUCTIONS

ENGLISH

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. Otherwise, it may cause a fire
or electrical shock.

• Unplug the unit if strange sounds, smell, or smoke comes from it. Otherwise, it may cause electrical
shock or a fire.

• Keep the flames away. Otherwise, it may cause a fire.

• 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 use the power cord near the heating tools. Otherwise, it may cause a fire and electrical
shock.

• Do not open the suction inlet of the indoor/outdoor unit during operation.
Otherwise, it may electrical shock and failure.

• Do not allow water to run into electrical parts. Otherwise, it may cause the failure of machine or
electrical shock.

• Hold the plug by the head when taking it out. It may cause electric shock and damage.

• Never touch the metal parts of the unit when removing the filter. They are sharp and may cause
injury.

• 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.

• Do not place a heavy object on the power cord. Otherwise, it may cause a fire or electrical shock.

• When the product is submerged into water, always contact the service center. 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.

CAUTION

Installation

• Install the drain hose to ensure that drain can be securely done. Otherwise, it may cause water leak­age.

• 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.

• Always inspect gas leakage after the installation and repair of product. Otherwise, it may cause the
failure of product.

• 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.

• 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 use an appliance for special purposes such as preserving animals vegetables, precision
machine, or art articles. Otherwise, it may damage your properties.

• Do not place obstacles around the flow inlet or outlet. Otherwise, it may cause the failure of appli­ance or an accident.

!

TABLE OF CONTENTS

5

ENGLISH

2 TIPS FOR SAVING ENER-

GY

3 IMPORTANT SAFETY

INSTRUCTIONS

6 INSTALLATION OF OUT-

DOOR UNIT

8 WIRING CONNECTION

8 Electrical wiring

9 Connecting cables between indoor unit

and outdoor unit

11 Connecting the cable to outdoor unit

12 CONNECTING PIPES

12 Preparation of piping

13 Connecting the pipes to the outdoor unit

14 Forming the piping

15 Plumbing materials and storage meth-

ods

16 Nitrogen substitution method

17 LEAKAGE TEST AND

EVACUATION

17 Preparation

17 Leakage test

18 Evacuation

19 TEST RUNNING

21 FUNCTION

21 Forced cooling operation

22 SELF-DIAGNOSIS FUNC-

TION

22 Error indicator (outdoor)

24 INSTALLATION GUIDE AT

THE SEASIDE

TABLE OF CONTENTS

6

INSTALLATION OF OUTDOOR UNIT

ENGLISH

- 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.

More than
300 mm

Fence or

obstacles

More thanMore than
300 mm300 mm

More than
300 mm

Sunroof

More than 700 mm

More than 600 mm

Unit : mm

Installation Places

INSTALLATION OF OUTDOOR UNIT

INSTALLATION OF OUTDOOR UNIT

7

ENGLISH

MODEL CAPACITY

Pipe Size Length A (m) Elevation B (m)

Additional

Refrigerant

(g/m)

Gas Liquid Standard Max. Standard Max.

AVUQ36GM1A0 36 kBtu/h Ø 15,88 (5/8) Ø 9,52 (3/8) 7,5 50 0 30 20

AVUQ48GM2A0 46 kBtu/h Ø 15,88 (5/8) Ø 9,52 (3/8) 7,5 50 0 30 20

AVUQ60GM2A0 58 kBtu/h Ø 19,05 (3/4) Ø 9,52 (3/8) 7,5 50 0 30 20

Piping length and the elevation

Ceiling Suspended Air conditioner

• Capacity is based on standard length and maximum allowance length is on the basis of

reliability.

• Improper refrigerant charge may result in abnormal cycle.

CAUTION

!

If installed tube is shorter than 15 m, additional charging is not necessary.
Additional Refrigerant = (A -15) x Additional refrigerant (g)

Indoor unit

B

Outdoor unit

A

Outdoor unit

Indoor unit

A

B

8

WIRING CONNECTION

ENGLISH

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

AVUQ36GM1A0 1 30 A

AVUQ48GM2A0 1 40 A

AVUQ60GM2A0 1 40 A

WIRING CONNECTION

Main
power source

Indoor

ELCB

Switch box

Outdoor

WIRING CONNECTION

9

ENGLISH

Connecting cables between indoor unit and outdoor unit

The power cord 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.

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.)

If the supply cord is damaged, it must be replaced by a special cord or assembly availible
from the manufacturer of its service agent.

When the connection line between the indoor unit and out­dooor unit is over 40 m, connect the telecommunication line
and power line separately.

CAUTION

!

GN/YL

20 mm

35±5 mm

10±3 mm

NORMAL
CROSS-SECTIONAL
AREA 0.75 mm

2

20 mm

GN

/YL

35±5 mm

10±3 mm

Model Phase(Ø) Area(mm2)

AVUQ36GM1A0

14

AVUQ48GM2A0

16

AVUQ60GM2A0

16

Outdoor

unit

3
2

1

Indoor

unit

3
2

1

10

WIRING CONNECTION

ENGLISH

Use round pressure terminals for connections to the power terminal block.

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.

Round pressure terminal

Power wire

Precautions when laying power wiring

WIRING CONNECTION

11

ENGLISH

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.

• 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.

• The Power cord connected to the unit should be selected according to the following speci­fications.

CAUTION

!

Connecting cable terminal
Power cord terminal

Cord clamp

* Make sure the rubber bushes are

properly used in knock-out holes after
connecting main power.

12

CONNECTING PIPES

ENGLISH

Preparation of piping

Main cause of gas leakage is defect in flaring work.
Carry out correct flaring work in the following procedure.

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 1.5 m longer than the pipe
length.

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.

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)

Flaring work

- Carry out flaring work using dedicated flaring
tool for R-410A as shown below.

Firmly hold copper tube in a bar(or die) as
indicated dimension in the table above.

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.

Copper

tube

90°

Slanted Uneven Rough

Pipe

Reamer

Point down

Flare nut

Copper tube

Bar

Copper pipe

Clamp handle

Red arrow mark

Cone

Yo ke

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
Ø 6,35 1/4 1,1 - 1,3
Ø 9,52 3/8 1,5 - 1,7
Ø 12,7 1/2 1,6 - 1,8

Ø 15,88 5/8 1,6 - 1,8
Ø 19,05 3/4 1,9 - 2,1

CONNECTING PIPES

CONNECTING PIPES

13

ENGLISH

Connecting the pipes to the outdoor unit

Align the center of the piping and sufficiently
tighten the flare nut by hand.

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.

Preventing foreign objects from entering

- Plug the pipe through-holes with putty or
insulation material(procured locally)to stop up
all gaps.

h When tighten the pipe, hold the haxago-

nal body.

Outside diameter

Torque

mm inch N·m
Ø 6,35 1/4 16 ± 2
Ø 9,52 3/8 38 ± 4
Ø 12,7 1/2 55 ± 6

Ø 15,88 5/8 75 ± 7
Ø 19,05 3/4 110 ± 10

Insects or small animals entering the outdoor unit may cause a short circuit in the electrical
box.

CAUTION

!

Torque
wrench

Contin

-uous

Drain hose

Connecting wire
Gas side piping

Liquid side piping

14

CONNECTING PIPES

ENGLISH

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.

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.

Plastic
band

Seal a small
opening around
the pipings with
gum type sealer.

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.

Trap

TrapTrapTrap

Seal a small opening Seal a small opening
around the pipings around the pipings
with gum type sealer.with gum type sealer.

Seal a small opening
around the pipings
with gum type sealant.

Seal a small

Seal a small
opening around

opening around

the pipings with

the pipings with

gum type sealant.

gum type sealer.

Plastic

Plastic

band

band

Taping

Drain hose

Pipings

Connecting
cable

Power supply
cord

• Trap is required to prevent water from entering
into electrical parts.

CONNECTING PIPES

15

ENGLISH

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 leak-

age

Items

Moisture

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.

16

CONNECTING PIPES

ENGLISH

Nitrogen substitution method

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.

1 Always use the nitrogen.(not use oxygen, carbon dioxide, and a Chevron gas):

Please use the following nitrogen pressure 0,02 MPa
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)

CAUTION

!

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 can cause leakage.

Nitrogen gas
Pressure 0,02 Mpa less

Taping

(Should not

contain air)

Auxiliary valve

Nitrogen

LEAKAGE TEST AND EVACUATION

17

ENGLISH

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.

!

- 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.

- 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.

Air and moisture remaining in the refrigerant
system have undesirable effects as indicated
below.

- Pressure in the system rises.

- Operating current rises.

- Cooling(or heating) efficiency drops.

- Moisture in the refrigerant circuit may freeze
and block capillary tubing.

- 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.

LEAKAGE TEST AND EVACUATION

Indoor unit

Outdoor unit

Manifold valve

Lo Hi

Charge hose

Pressure
gauge

Nitrogen gas
cylinder(in vertical
standing position)

18

LEAKAGE TEST AND EVACUATION

ENGLISH

- When the desired vacuum is reached, close
the "Lo and Hi" knob of the manifold valve
and stop the vacuum pump.

Required time for evacuation when 30 gal/h

vacuum pump is used

If tubing length is

less than10 m (33 ft)

If tubing length is

longer than 10 m (33 ft)

30 min. or more 60 min. or more

0,67 kPa or less

- With a service valve wrench, turn the valve
stem of liquid side valve counter-clockwise to
fully open the valve.

- Turn the valve stem of gas side valve counter­clockwise to fully open the valve.

- Loosen the charge hose connected to the gas
side service port slightly to release the pressure,
then remove the hose.

- 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.

- Replace the valve caps at both gas and liquid
side service valves and fasten them tightly.

This completes air purging with a vacuum pump.
The air conditioner is now ready to test run.

Finishing the job

Evacuation

- 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

Manifold valve

Lo Hi

Open

Vacuum pump

Open

Pressure
gauge

TEST RUNNING

19

ENGLISH

- The initial power supply must provide at least 90 % of the rated voltage.
Otherwise, the air conditioner should not be operated.

- 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.

- Connect the power supply cord to the independent power supply.
Circuit breaker is required.

- Operate the unit for 15 minutes or more.

Precautions In Test Running

Connection of power supply

Evaluation of the performance

CAUTION

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.

Carry out the test run more than 5 minutes without fail.
(Test run will be cancelled 18 minutes later automatically)

!

□Is the circulation of air adequate?
□Is the draining smooth?
□Is the heat insulation completed

(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......118 N·cm {12 kgf·cm}

M5......196 N·cm {20 kgf·cm}

M6......245 N·cm {25 kgf·cm}

M8......588 N·cm {60 kgf·cm}

- Measure the temperature of the intake and discharge air.

- Ensure the difference between the intake temperature and the discharge one is more than 8 °C
(Cooling) or reversely (Heating).

TEST RUNNING

20

TEST RUNNING

ENGLISH

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.)

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 % 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.

!

FUNCTION

21

ENGLISH

Forced cooling operation

Adding the refrigerant in winter.

• 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)

WARNING

!

Setting procedure

- Set the dip switch as follow after shutting the power source down.

- Reset the power.

- Red LED and Green LED of PCB lights during work. (The indoor unit is operated by force.)

- If operation is done, Red LED will be turned off.
If operation is not done normally, Red LED will blink.

- 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.

Liquid valve
closed

Gas valve
closed

Comp on

(Red LED on, Green LED on)

Pump down start

(Red LED on, Green LED off)

Pump down complete

(Red LED Off, Green LED On)

Power off

(Red LED Off, Green LED On)

FUNCTION

AVUQ36GM1A0

AVUQ48GM2A0
AVUQ60GM2A0

6 7 8 9 10

22

SELF-DIAGNOSIS FUNCTION

ENGLISH

Error indicator (outdoor)

Outdoor error
Ex) Error 21 (DC Peak)

1 Time 1 Time 1 Time

2 Times2 Times2 Times

1 Sec.

2 Sec. 2 Sec.

1 Sec. 1 Sec.

LED 1
(RED)

LED 2

(GREEN)

SELF-DIAGNOSIS FUNCTION

AVUQ36GM1A0

AVUQ48GM2A0
AVUQ60GM2A0

SELF-DIAGNOSIS FUNCTION

23

ENGLISH

Error code Description

LED

(Red)

LED

(Red)

Indoor
status

LED 1

(Red)

LED 2

(Green)

21 DC Peak (IPM Fault)

2times ◑ 1time ◑

OFF

22 Max. CT (CT2)

2times ◑ 2times ◑

OFF

23 DC Link low volt.

2times ◑ 3times ◑

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

35 Low pressure error

3times ◑ 5times ◑

OFF

41 Inv. D-Pipe sensor error (open/short)

4times ◑ 1time ◑

OFF

43 Pressure sensor (open/short)

4times ◑ 3times ◑

OFF

44 Outdoor air sensor error (open/short)

4times ◑ 4times ◑

OFF

45 Cond. Middle pipe sensor error (open/short)

4times ◑ 5times ◑

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 sensor 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 GUIDE AT THE SEASIDE

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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.

In case, to install the outdoor unit on the
seaside, set up a windbreak not to be
exposed to the sea wind.

- 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.

- It should be keep more than 70 cm of space
between outdoor unit and the windbreak for
easy air flow.

Select a well-drained place.

Sea wind

Sea wind

Sea wind

Windbreak

• Periodic ( more than once/year ) clean­ing of the dust or salt particles stuck on
the heat exchanger by using water

• Air conditioners should not be installed
in areas where corrosive gases, such as
acid or alkaline gas, are produced.

• 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.

• 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.

CAUTION

!

Selecting the location(Outdoor unit)

INSTALLATION GUIDE AT THE SEASIDE