LG LF480CE User Manual

Floor Standing Type Air Conditioner

SERVICE MANUAL

MODEL: LF300CP(LP-C303R20)

LF480CE(LP-C483TA0)

Contents

Safety Precautions..................................................................................................................3

Functions .................................................................................................................................7

Product Specifications .........................................................................................................10

Dimensions............................................................................................................................11

Wiring Diagram......................................................................................................................15

Operation Details ..................................................................................................................17

Installation of Indoor, Outdoor Unit.....................................................................................23

Test Running .........................................................................................................................25

Troubleshooting Guide .........................................................................................................27

Exploded View and Replacement Parts List.......................................................................41

–2–

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions must be followed.

■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

■ Meanings of symbols used in this manual are as shown below.

Be sure not to do.

Be sure to follow the instruction.

■ Installation

Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.

• 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

Always ground the product.

• There is risk of fire or electric shock.

Use the correctly rated breaker or fuse.

• 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.

Do not modify or extend the power cable.

• There is risk of fire or electric shock.

–3–

Do not install, remove, or reinstall the unit by yourself (customer).

Be cautious when unpacking and installing the product.

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.

• Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator.

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.

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

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.

■ Operational

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 or electric shock.

–4–

Do not let electric parts of the product get wet.

• There is risk of fire, failure of the product, or electric shock.

Do not store or use flammable gas or combustibles near the product.

If strange sounds, or small or smoke comes from product. Turn the breaker off or disconnect the power supply cable.

• There is risk of fire or failure of product.

Gasolin

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.

• There is risk of electric shock or fire.

Be cautious that water could not enter the product.

• There is risk of fire, electric shock, or product damage.

■ 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.

–5–

Keep level even when installing the product.

Use two or more people to lift and transport the product.

• To avoid vibration or water leakage.

90˚

■ Operational

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.

• Avoid personal injury.

Do not touch the metal parts of the product when removing the air filter. They are very sharp!

• There is risk of personal injury.

Thinner

Wax

Do not step on or put anyting on the product. (outdoor units)

• There is risk of personal injury and failure of product.

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.

–6–

Functions

Indoor Unit

Power Switch ON/OFF

Operation Mode Control

• Cooling, Heating, Soft Dry, Fan

Indoor Fan Speed Control

• High, Med & Low

Room Temperature control

• Maintains the room temperature in accordance with the Setting Temp.

• Up: up to 30°C(86.0°F)

• Down: down to 16°C(60.8°F)

Sensing Heat Exchanger Temperature

• Heat exchanger temperature sensor (Thermistor)

Soft Dry Operation Mode

• Intermittent operation of fan at low speed.

Time Delay Safety Control

• Restarting is inhibited for approx. 3 minutes.

AutoRestart

• The power comes on again after a power failure.

–7–

Remote Control

Operation ON/OFF

Cooling Operation Mode

Heating Operation Mode

Sot Dry Operation Mode

• Intermittent operation of fan at low speed.

Fan Operation

• Used to circulate room air without cooling.

Timer Control

• OFF Timer (1, 2, 3,......7 hour)

Airflow Direction Control

• Airflow direction Auto-swing and Manual Contol.

Room Temperature Control

• Up: up to 30°C(86.0°F)

• Down: down to 16°C(60.8°F)

Indoor Fan speed control

• High, Med & Low

–8–

Outdoor Unit

Deice Control

• De-ice PCB

Outdoor Fan Speed Control

• One speed

Sensing Heat Exchanger Temperature

• Heat exchanger temperature sensor (Thermistor)

(Heating Model Only)

–9–

Product Specifications

MODEL

POWER SOURCE (ø, V, Hz)

COOLING CAPACITY BTU/h

INPUT W

CURRENT A

HEATING CAPACITY BTU/h

INPUT W

CURRENT A

MAKER

TYPE

COMPRESSOR MODEL

CAPACITY BTU/h

CURRENT A

INPUT W

NOISE INDOOR

LEVEL(1m) OUTDOOR

dB(A)

LF300CP(LP-C303R20) LF480CE(LP-C483TA0)

1, 208/230, 60 1, 208/230, 60

28,000 48,000

8,206 14,067

2,600 4,500

11.5 20

LG LG

Rotary Rotary

QJ250KAB/QK145KBD QP325KBD * 2

17,658/10,100 24000

7.7/4.5 10.2

1,635/935 2162

50/45/39/32 57/54/51

56 62

AIR INDOOR

VOLUME OUTDOOR

REFRIGERANT R-22

HEAT INDOOR R/C/FPI

EXCHANGER OUTDOOR R/C/FPI

FAN INDOOR

OUTDOOR

ROOM TEMPERATURE CONTROL

NET INDOOR

WEIGHT OUTDOOR

Gross Weight INDOOR kg(lbs)

OUTDOOR

DIMENSIONS INDOOR

(W ¥ H ¥ D) OUTDOOR

SVC LIQUID

VALVE GAS

POWER CABLE P*mm

CONNECTING CABLE P*mm

BREAKER CAPACITY A

CMM

(CFM)

kg(Oz)

TYPE

kg(lbs)

(Inch)

20/16.5/13/6 (706/583/459/212) 35/33/30(1,236/1,165/1,059)

47 (1,660) 104(3,672)

1.84 (65) 3.92(124.2)

2R/30C/18FPI 3R/28C/18FPI

2R/36C/20FPI 2R/26C/21FPI

TURBO FAN TURBO FAN

Propeller Propeller

Thermistor Thermistor

32(70.5) 58(127.9)

66(145.5) 90(198.4)

38(83.8) 66(145.5)

71(156.5) 100(220.5)

570 x 1,820x 310 (22.45 x 71.7 x 12.2) 590 x 1,810 x 440 (23.23 x 71.26 x 17.32)

870 x 808 x 320 (34.3 x 31.8 x 12.6) 900 x 1,225 x 370 (35.43 x 48.23 x 14.57)

9.52(3/8) 9.52(3/8)

15.88(5/8) 19.05(3/4)

3x4.0 3x5.5

4x1.0 4x1.0

30 40

–10–

Cool air outlet(2 sides) by

Manual operation

Cool air outlet(front side)

Top/Bottom Airflow Controller

Left/Right Airflow Controller

Sliding Clean Door

Display Panel

Antibiotic Filter

Air Inlet

Antibiotic Filter

Plasma Deodorant Air Cleaner

Remote Controller Holder

Control Panel

Top/Bottom Airflow Controller Left/Right Airflow Controller

Air Outlet

Bottom Panel

Ground Terminal

Refrigerant Pipe Port

Air Inlet(back side)

Control Cover

Dimensions

Indoor Unit: LPNC303R20 (LF300CP)

Outdoor Unit : LPUC303R20 (LF300CP)

–11–

Indoor Unit

800mm(31.5inch)

180mm(7.1inch)

101mm(4.0inch)

370mm(14.6)

340mm(13.4inch)

95mm

870mm(34.3inch)

320mm(12.6inch)

546mm(21.5inch)

1820mm(71.7inch)

570mm(22.4inch)

311mm(12.2inch)

180mm(7.1inch)

101mm(4.0inch)

No. Items

1 Control Display 2 Air outlet vent 3 Air inlet vent

Outdoor Unit

No. Items

1 Gas side service valve (Ø 15.88mm(5/8inch)) 2 Liquid side service valve (Ø 9.52mm(3/8inch)) 3 Fan cover 4 Earth screw 5 Connecting cable hole

–12–

Air Intake Vent (Rear)

Air Outlet

Vent

Piping

Air Outlet Vent

Remote Signal Receptor

Air Intake Vent

Indoor Unit : LPNC483TA0 (LF480CE)

door Unit : LPUC483TA0 (LF480CE)

–13–

Indoor Unit

210mm(8.3inch)

290mm(11.4inch)

505mm(19.9inch)

130mm(5.1inch)

41mm(1.6inch)

40mm(1.6inch)

139mm(15.5inch)

260mm(10.2inch)

486mm(19.1inch)

260mm(10.2inch)

1850mm(72.8inch)

1540mm(60.6inch)

590mm(23.2inch)

525mm(20.7inch)

79mm(3.1inch)

No.

1A 2 Air Inlet Vent 3

439mm(17.3inch)

950mm(37.4inch)

134mm(5.3inch)

338mm(13.3inch)

Items

ir Outlet Vent

Control display

40mm(1.6inch)

562mm(22.1inch)

139mm(15.5inch)

41mm(1.6inch)

Outdoor Unit

No. Items

1A 2 Liquid Side SVC Valve(Ø 3 Gas Side SVC Valve(Ø 4 Control Box 5

130mm(5.1inch)

90mm(3.5inch)

505mm(19.9inch)

460mm(18.1inch) 640mm(25.2inch) 900mm(35.4inch)

370mm(14.6inch)

125mm(4.9inch)

460mm(18.1inch)

ir Outlet Vent

Earth Screw

1220mm(48.0inch)

290mm(11.4inch)

210mm(8.3inch)

9.52mm(3/8inch))

19.05mm(3/4inch))

–14–

Wiring Diagram

1. LF300CP(LP-C303R20)

Outdoor

–15–

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