LG Electronics 230/208V service manual Contents, Preface

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CONTENTS

1. PREFACE

 

1.1 SPECIFICATIONS

3

1.2 FEATURES AND BENEFITS

4

1.3 CONTROL LOCATIONS

6

1.4 ADDITIONAL CONTROLS

7

2. DISASSEMBLY INSTRUCTIONS

 

2.1 MECHANICAL PARTS

9

2.1.1 FRONT GRILLE

9

2.1.2 CONTROL BOX (Half-Disassembly)....

10

2.1.3 CONTROL BOX (Full-Disassembly) ....

10

2.2 AIR HANDLING PARTS

11

2.2.1 HEATER ASSEMBLY AND CROSS

 

FLOW FAN

11

2.2.2 FAN

11

2.2.3 SHROUD

12

2.3 ELECTRICAL PARTS

12

2.3.1 OUTDOOR MOTOR

12

2.3.2 INDOOR MOTOR

12

2.3.3 COMPRESSOR

12

2.3.4 CAPACITOR

12

2.3.5 POWER CORD

13

2.3.6 P.C.B

13

2.4 REFRIGERATION CYCLE

14

2.4.1 CONDENSER

14

2.4.2 EVAPORATOR

14

2.4.3 CAPILLARY TUBE

14

3. INSTALLATION

 

3.1 HOW TO INSTALL THE UNIT

17

3.2 SUGGESTED TOOL REQUIREMENTS

18

3.2.1 PREPARATION OF SLEEVE

18

3.2.2 PREPARATION OF THE FRONT

 

GRILLE

18

3.2.3 UNIT INSTALLATION

19

3.3 ELECTRICAL REQUIREMENTS

20

3.3.1 ELECTRICAL DATA (FOR 230V/208 MODEL)

20

3.3.2 ELECTRICAL SAFETY

20

4. FERFORMANCE DATA

21

5. TROUBLESHOOTING GUIDE

 

5.1 OUTSIDE DIMENSIONS

26

5.2 PIPING SYSTEM

26

5.3 TROUBLESHOOTING GUIDE

27

6. SCHEMATIC DIAGRAM

32

7. EXPLODED VIEW

33

8. REPLACEMENT PARTS LIST

34

1. PREFACE

This SERVICE MANUAL provides various service information, including the mechanical and electrical parts etc. This room air conditioner was manufactured and assembled under a strict quality control system. The refrigerant is charged at the factory. Be sure to read the safety precautions prior to servicing the unit.

1.1 SAFETY PRECAUTIONS

1.When servicing the unit, set the ROTARY SWITCH or POWER SWITCH to OFF(O) and unplug the power cord.

2.Observe the original lead dress.

If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.

3.After servicing the unit, make an insulation resistance test to protect the customer from being exposed to shock hazards.

—2—

1.2 INSULATION RESISTANCE TEST

1.Unplug the power cord and connect a jumper between 2 pins (black and white).

2.The grounding conductor (green or green & yellow) is to be open.

3.Measure the resistance value with an ohm meter between the jumpered lead and each exposed metallic part on the equipment at all the positions (except OFF or O) of the ROTARY SWITCH.

4.The value should be over 2M.

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Contents LG Room Air Conditioner Contents PrefaceCooling / Heat Pump / Electric SpecificationsCooling / Electric Heater Features Condensate Drain Valve Ventilation Control LocationsOperation Electric Heating Model Cooling only ModelRemoving the Front Grille Temperature LimitingAdditional Controls Additional ControlsFront Desk Control REMOTE/LOCAL ControlEnergy Saver Remote Wall ThermostatFront Grille Disassembly InstructionsMechanical Parts Control BOX Half-Disassembly Control BOX Full-Disassembly2 FAN Heater Assembly and Cross Flow FANAIR Handling Parts Outdoor Motor Electrical PartsShroud CompressorPower Cord 6 P.C.BEvaporator Refrigeration CycleCondenser Capillary TubePage Pulling Vacuum Dimension of sleeve assembly optional HOW to Install the UnitDimension of air conditioner If YOU Want to Pull OUT the Filter DownwardSleeve Hardware Suggested Tool RequirementsPreparation of the Front Grille Assemble the Wall SleeveUnit Installation Electrical Data for 230/208V Model Electrical SafetyElectrical Requirements Important Grounding InstructionsAir Conditioner Performance Data Heat Pump Performance DataCooling Wattage Air Conditioners LP120CEMCooling Wattage Heat Pumps Cooling change of temperature Air Conditioners Cooling Change of Temperature Heat PumpsCooling Ampere Chart Heat Pumps Heating Change of Temperature Heat PumpsCooling Ampere Chart Air Conditioners Piping System Troubleshooting GuideOutside Dimensions Troubleshooting Guide Fails to Start Complaint Cause Remedy Room AIR Conditioner Voltage Limits Name Plate Rating Minimum MaximumComplaint Cause Remedy Schematic Diagram Location Description QTY Remarks PER SETExploded View Replacement Parts List Description Remark LP090HEM LP120CEM LP120HEMNo A20308H May