AVUQ18GM1A1 - Air-conditioner LG - Free user manual and instructions

USER MANUAL AVUQ18GM1A1 LG

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 Outdoor

* M F L 6 7 8 8 9 0 1 1 *

REV.: 05(08T18)

www.lg.com

Copyright © 2018 LG Electronics Inc. All Rights Reserved.

TIPS FOR SAVING ENERGY

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:

• 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 :

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

• Install or repair by unqualified persons can result in hazards to you and others.
- Installation MUST comply with local building codes. If there is no local codes, comply with the Nation Electrical Code NFPA 70/ANSI C1-1003, Canadian Electrical Code Part1 CSA C.22.1. or current edition.
- 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 or death.
- This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

Installation

• Do not install duct through disassemble or prepare the product yourself.
• This product can not install duct.
• Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.
• There is risk of fire or electric shock.
• For electrical work, contact the dealer, seller, a qualified electrician, or an authorized service center.
• Do not disassemble or repair the product. There is risk of fire or electric shock.
  • Always ground the product.
• There is risk of fire or electric shock.
• Install the panel and the cover of control box securely.
• There is risk of fire or electric shock.
  • Always install a dedicated circuit and breaker.
• Improper wiring or installation may cause fire or electric shock.
• Use the correctly rated breaker or fuse.
• There is risk of fire or electric shock.
• Do not modify or extend the power cable.
• There is risk of fire or electric shock.
• Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open.
• Moisture may condense and wet or damage furniture.
• Be cautious when unpacking and installing the product.
• Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator.
• For installation, always contact the dealer or an authorized service center.

• There is risk of fire, electric shock, explosion, or injury.

• Do not install the product on a defective installation stand.

• It may cause injury, accident, or damage to the product.
• Be sure the installation area does not deteriorate with age.
• If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.
• 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 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.

Operation

• Take care to ensure that power cable could not be pulled out or damaged during operation. There is risk of fire or electric shock.
• Do not place anything on the power cable. There is risk of fire or electric shock.
• Do not touch(operate) the product with wet hands. There is risk of fire or electrical shock.
• Do not place a heater or other appliances near the power cable. There is risk of fire and electric shock.
• Do not allow water to run into electric parts. There is risk of fire, failure of the product, or electric shock.
• Do not store or use flammable gas or combustibles near the product. There is risk of fire or failure of product.
• Do not use the product in a tightly closed space for a long time. Oxygen deficiency could occur.
• When flammable gas leaks, turn off the gas and open a window for ventilation before turn the product on. Do not use the telephone or turn switches on or off. There is risk of explosion or fire.
• If strange sound, smell or smoke comes from product, turn the breaker off or disconnect the power supply cable. There is risk of electric shock or fire.
• Stop operation and close the window in storm or hurricane. If possible, remove the product from the window before the hurricane arrives. There is risk of property damage, failure of product or electric shock.
• Do not open the inlet grill of the product during operation.(Do not touch the electrostatic filter, if the unit is so equipped.) There is risk of physical injury, electric shock, or product failure.
• When the product is soaked (flooded or submerged), contact an authorized service center. There is risk of fire or electric shock.
• Be cautious that water could not enter the product. There is risk of fire, electric shock, or product damage.
• Ventilate the product from time to time when operating it together with a stove, etc. There is risk of fire or electric shock.
• Turn the main power off when cleaning or maintaining the product. There is risk of electric shock.
• When the product is not be used for a long time or the product use first time after test running, turn on main power switch before 6 hours ago.
  • Take care to ensure that nobody could step on or fall onto the outdoor unit. This could result in personal injury and product damage.

CAUTION

Installation

• Always check for gas (refrigerant) leakage after installation or repair of product. Low refrigerant levels may cause failure of product.
• Install the drain hose to ensure that water is drained away properly. A bad connection may cause water leakage.
• Keep level even when installing the product. To avoid vibration or water leakage.
• Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods. It may cause a problem for your neighbors.
• Use two or more people to lift and transport the product. Avoid personal injury.
• Do not install the product where it will be exposed to sea wind (salt spray) directly. It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.

Operation

• Do not expose the skin directly to cool air for long periods of time. (Don't sit in the draft.) This could harm to your health.
• Do not use the product for special purposes such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigeration system. There is risk of damage or loss of property.
• Do not block the inlet or outlet of air flow. It may cause product failure.
• Use a soft cloth to clean. Do not use harsh detergents, solvents, etc. There is risk of fire, electric shock, or damage to the plastic parts of the product.
• Do not touch the metal parts of the product when removing the air filter. They are very sharp! There is risk of personal injury.
• Do not step on or put anything on the product. (outdoor units) There is risk of personal injury and failure of product.
• Always insert the filter securely. Clean the filter every two weeks or more often if necessary. A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage.
• Do not insert hands or other objects through the air inlet or outlet while the product is operated. There are sharp and moving parts that could cause personal injury.
• Do not drink the water drained from the product. It is not sanitary and could cause serious health issues.
• Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury.
• Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries. There is risk of fire or explosion
• Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire. They may burn or explode.
• If the liquid from the batteries gets onto your skin or clothes, wash it well with clean water. Do not use the remote if the batteries have leaked. The chemicals in batteries could cause burns or other health hazards.
• If you eat the liquid from the batteries, brush your teeth and see doctor. Do not use the remote if the batteries have leaked. The chemicals in batteries could cause burns or other health hazards.

TABLE OF CONTENTS

2TIPS FOR SAVING ENERGY

3IMPORTANT SAFETY INSTRUCTIONS

7INSTALLATION OF OUTDOOR UNIT

9WIRING CONNECTION

9Electrical Wiring

10Connecting Cables between Indoor Unit and Outdoor Unit

12Connecting the cable to Outdoor Unit

14CONNECTING PIPES

14Preparation of Piping

15Connection of piping - Outdoor

15Forming the piping

16LEAKAGE TEST AND EVACUATION

16Preparation

16Leakage test

17Evacuation

18TEST RUNNING

20FUNCTION

20Forced Cooling Operation

21SELF-DIAGNOSIS FUNCTION

21Error Indicator (Outdoor)

23INSTALLATION GUIDE AT THE SEASIDE

INSTALLATION OF OUTDOOR UNIT

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.

Awning OUTDOOR UNIT More than 300(11-13/16)mm Fence or obstacles More than 300(11-13/16)mm More than 600(23-5/8)mm More than 700(27-9/16)mm

Unit : mm(inch)

Piping length and the elevation

MODEL	Capacity (kBtu/h)	Pipe Size mm(inch)		Length A m(ft)		Elevation B m(ft)	Additional-Refrigerant g/m(klb/ft)
		Gas Liquid Standard		Max. Max.
ATUQ18GPLE6 AVUQ18GM1A1			∅ 6.35(1/4)	∅ 12.7(1/2)	30(98.4)	15(49.2)	20(30)
ATUQ24GPLE6 AVUQ24GM1A1	24		∅ 9.52(3/8)	∅ 15.88(5/8)	50(164)	30(98.4)	30(45)
AVUQ30GM1A1	30 ∅ 9	9.52(3/8)∅ 15	.88(5/8)
ATUQ30LNLE6							20(30)
ATUQ36GNLE6 AVUQ36GM2A1 ATUQ36LNLE6 AVUQ36LM2A1	36∅ 1	5.88(5/8)	∅ 9.52(3/8)
ATUQ48GMLE6 APUQ48GT3E3	46∅ 1	5.88(5/8)	∅ 9.52(3/8)
ATUQ48LMLE6 AVUQ48LM2A1	48∅ 1	5.88(5/8) ∅ 9	.52(3/8)

CAUTION

If installed tube is shorter than 15 m(49.2 ft), additional charging is not necessary.

Additional Refrigerant = (A - 15 m) x Additional refrigerant (g) (A - 49.2 ft) x Additional refrigerant (klb)

CAUTION

• Capacity is based on 7.5 m and maximum allowance length is on the basis of reliability.
• Improper refrigerant charge can cause abnormal pressure and noise problem.

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(Earth 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

graph TD
    A["Main power source"] --> B["Indoor"]
    B --> C["Outdoor"]
    C --> D["Switch box"]
    D --> E["ELCB"]
    E --> B

Model Phase ELCB
ATUQ18GPLE6AVUQ18GM1A1	1 20 A
ATUQ24GPLE6AVUQ24GM1A1AVUQ30GM1A1	1 30 A
ATUQ36GNLE6AVUQ36GM2A1	1 30 A
ATUQ48GMLE6APUQ48GT3E3	1 40 A
ATUQ30LNLE6ATUQ36LNLE6AVUQ36LM2A1ATUQ48LMLE6AVUQ48LM2A1	3 20 A

Connecting Cables between Indoor Unit and Outdoor Unit

graph TD
    A["1(L)2(N)3"] --> B["Indoor unit"]
    C["1(L)2(N)3"] --> D["Outdoor unit"]
    E["N(2)L(1)"] --> B
    F["Power Supply"] --> B
    G["Ground"] --> B

graph TD
    A["POWER SUPPLY"] --> B["R"]
    A --> C["S"]
    A --> D["T"]
    A --> E["N"]
    B --> F["1(L)2(N)3"]
    C --> F
    D --> F
    E --> F
    F --> G["Indoor unit"]
    F --> H["Outdoor unit"]

CAUTION

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.

GN/YL 20mm 10 ± 3 mm 35 ± 6 mm GN/YL 20mm

Model	Phase (∅)	Area(mm2)
ATUQ18GPLE6 / AVUQ18GM1A1	1	2.5(12AWG)
ATUQ24GPLE6 / AVUQ24GM1A1AVUQ30GM1A1	1	4.0(10AWG)
ATUQ36GNLE6 / AVUQ36GM2A1	1	4.0(10AWG)
ATUQ48GMLE6 / APUQ48GT3E3	1	6.0(6AWG)
ATUQ30LNLE6 / ATUQ36LNLE6AVUQ36LM2A1 / ATUQ48LMLE6AVUQ48LM2A1	3	2.5(12AWG)

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.)

10(13/32) ± 3(1/8) mm(inch) 35(1-3(8) ± 5(3/16) mm(inch) GN/YL 20(25/32) mm(inch)

NORMAL
CROSS-SECTIONAL
AREA 0.75mm²

When the connection line between the indoor unit and outdoor unit is over 40 m(131.2 ft), connect the telecommunication line and power line separately.

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

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.

Simple line drawing of a mechanical or structural component with two circular holes and a central curved structure (no text or symbols)

Simple line drawing of a container with two circular objects inside, enclosed by a U-shaped structure and a prohibition symbol (no text or labels)

Simple line drawing of a vehicle under load with no text or symbols

• 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 terminal screws. A screwdriver with a small head will strip the head and make proper tightening impossible.
• Over-tightening the terminal screws may break them.

Connecting the cable to Outdoor Unit

Remove the side panel for wiring connection. Use the cord clamp to fix the cord cord.

Earthing work

- Connect the cable of diameter more to the earthing terminal provided in the control box and do earthing.

< Model : ATUQ18GPLE6 / AVUQ18GM1A1 >

Power cord terminal Connecting cable terminal Wiring diagram Tubing cover Cord clamp Power cord Connecting cable

< Model : ATUQ24GPLE6 / AVUQ24GM1A1 / AVUQ30GM1A1 >

Power cord terminal Connecting cable terminal Wiring diagram Tubing cover Cord clamp Power cord Connecting cable

< Model : ATUQ36GNLE6 / AVUQ36GM2A1 >

Power cord Connecting cable * Make sure the rubber bushes are properly used in knock-out holes after connecting main power.

Power cord Connecting cable Make sure the rubber bushes are properly used in knock-out holes after connecting main power.

< Model : ATUQ30LNLE6 / ATUQ36LNLE6 / AVUQ36LM2A1 / ATUQ48LMLE6 / AVUQ48LM2A1>

Power cord Connecting cable 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 They won't 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 specifications.

CONNECTING PIPES

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(4.9 ft) longer than the pipe length.

Burns 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 chips 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 R410A as shown below.

Outside diameter				A
mm inch mm inch
∅ 6.35	1/4	1.1~1.3		0.043~0.051
∅ 9.52	3/8	1.5~1.7		0.059~0.067
∅ 12.7	1/2	1.6~1.8		0.063~0.071
∅ 15.88	5/8	1.6~1.8		0.063~0.071
∅ 19.05	3/4	1.9~2.1		0.075~0.083

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 Point down Reamer

Flare nut Copper tube

Bar "Copper pipe "A" Handle Yoke Cone Clamp handle Red arrow mark

Smooth all round Inside is shining without scratches Even length all round = Improper flaring = Inclined Surface damaged Cracked Uneven thickness

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.

Outside diameter		Torque
mm inch N		·m
∅6.35 1/4	16±2
∅9.52 3/8	38±4
∅12.7 1/2	55±6
∅15.88 5/8	75±7

Gas side piping (Bigger diameter) Liquid side piping (Smaller diameter) Torque wrench

* When tighten the pipe, hold the haxagonal body.

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.

Seal a small opening around the pipings with gum type sealant. Plastic band Taping Drain hose Pipings Connecting cable Power supply cord OUTDOOR UNIT Trap is required to prevent water from entering into electrical parts.

LEAKAGE TEST AND EVACUATION

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.

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 have 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 3.8 MPa(551 psi) with dry nitrogen gas and close the cylinder valve when the gauge reading reached 3.8 MPa(551 psi) 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.

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.

Required time for evacuation when 30 gal/h vacuum pump is used
If tubing length is less than 10 m(33 ft)	If tubing length is longer than 10 m(33 ft)
30 min. or more 60	min. or more
0.8 torr(mmHg) or less

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

Finishing the job

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

Manifold valve Pressure gauge Open Open Vacuum pump

TEST RUNNING

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

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)

• 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 SWENNSISIALATIONS 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.....118 N·cm / 12 kgf·cm / 87 klbf·in

M5.....196 N·cm / 20 kgf·cm / 145 klbf·in

M6.....245 N·cm / 25 kgf·cm / 181 klbf·in

M8.....588 N·cm / 60 kgf·cm / 434 klbf·in

Connection of power supply

• Connect the power supply cord to the independent power supply. Circuit breaker is required.
• Operate the unit for fifteen minutes or more.

Evaluation of the performance

• 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.

! 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 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.

FUNCTION

Forced Cooling Operation

Adding the refrigerant in winter.

Setting Procedure

- Set the Dip Switch as follow after shutting the power source down.

ATUQ24GPLE6AVUQ24GM1A1AVUQ30GM1A1	ATUQ36GNLE6ATUQ48GMLE6APUQ48GT3E3AVUQ36GM2A1ATUQ30LNLE6ATUQ36LNLE6AVUQ36LM2A1ATUQ48LMLE6AVUQ48LM2A1

* Some model don't have this function.
- 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.

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.

graph TD
    A["Pump Down Dip S/W Setting"] --> B["Power on (Red LED On, Green LED Off)"]
    B --> C["Comp on (Red LED On, Green LED On)"]
    C --> D["Pump Down Start (Red LED On, Green LED Off)"]
    D --> E["Pump Down Complete (Red LED Off, Green LED On)"]
    E --> F["Power off (Red LED Off, Green LED On)"]
    style A fill:#f9f,stroke:#333
    style F fill:#f9f,stroke:#333

SELF-DIAGNOSIS FUNCTION

Error Indicator (Outdoor)

LED (RED) 1 Time 1 Time 1 Sec. 2 Sec. 1 Sec. 2 Sec. 2 Times 2 Time LED Times 1 Sec.

Outdoor Error

Ex) Error 21 (DC Peak)

ATUQ18GPLE6AVUQ18GM1A1	ATUQ24GPLE6AVUQ24GM1A1AVUQ30GM1A1

LED 1 (RED) 2 Times2 Times2 Time 1 Sec. 1 Sec. 1 Sec. 1 Time 1 Time 1 Time 2 Sec. 2 Sec. LED 2 (GREEN)

Outdoor Error

Ex) Error 21 (DC Peak)

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.

Error code	Description	LED (Red)	LED (Red)	Indoor status
		LED 1 (Red)	LED 2 (Green)
21 DC Peak (IPM Fault)		2times ⭕	1times ⭕	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
38 Refrigerant leakage detect error		3times ⭕	8times ⭕	Restart after 3 minutes
40 CT sensor error (open/short)		4times ⭕	0 OFF
41 Inv. D-Pipe sensor error (open/short)		4times ⭕	1times ⭕	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		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		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

CAUTION

• 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.

Selecting the location(Outdoor Unit)

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.

Windbreak 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

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

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