LG Electronics LA121HPMI, LAU121CNM, LAN121CNM service manual Table of Contents

Page 2

Air Conditioner Service Manual

 

TABLE OF CONTENTS

 

Safety Precautions

3

Dimensions

9

Symbols Used in this Manual

9

Indoor Unit

9

Outdoor Unit

10

Introduction

11

Symbols Used In This Manual

11

Features

11

Installation

12

Installation Parts

12

Installation Tools

12

Installation Map

13

Confirm The Refrigerant

14

Select The Best Location

15

Piping Length and Elevation

16

How to Mount Installation Plate

17

Drill a Hole in the Wall

17

Flaring Work

18

Connecting The Piping

19

Connection of The Drain Hose

24

Connection of Piping -Outdoor

24

Connection of The Cable

25

Checking The Drainage

27

Forming The Piping

28

Air Purging

29

Air purging with Vacuum Pump

29

Charging

31

Test Running

32

Operation

33

Function of Controls

33

Display Function

37

Self-diagnosis Function

37

Remote Control Operations

38

Disassembly

39

Indoor Unit

39

Troubleshooting Guide

42

Refrigeration Cycle Diagram

42

2-way, 3-way Valve

43

Cycle Parts

49

Electronic Parts

50

Schematic Diagram

58

Electric Control Device

58

Wiring Diagram

60

Components Location

62

Product Specifications

65

Exploded View

67

Replacement Parts List

69

2Room Air Conditioner

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Contents Room Air Conditioner Table of Contents Do not modify or extend the power cord Safety PrecautionsInstallation Be sure not to do Be sure to follow the instructionOperation Moisture may condense and wet or damage furnishings Keep level even when installing the product Do not direct airflow at room occupants Do not block the inlet or outlet of air flowReplace all the batteries in the remote DisuseDo not drink the water drained from the unit Indoor Unit DimensionsSymbols Used in this Manual Outdoor Unit 12kFeatures IntroductionInstallation Tools InstallationInstallation Parts Installation Map Bushing-SleeveConfirm The Refrigerant This Product Contains R-410A RefrigerantOutdoor unit Rooftop InstallationsIndoor unit Piping Length and Elevation How to Mount Installation Plate Drill a Hole In The WallBurrs removal Flaring WorkCut the pipes and the cable Putting nut onIndoor Connecting The PipingIndoor unit installation Wrap the insulation material around the connecting portion Tighten the flare nut with a wrenchInsert the connecting cable into the indoor unit Indoor unit installationPiping for passage through piping hole Correct case Incorrect caseConnection of The Drain Hose Connection of Piping -OutdoorWiring Diagram Connection of The CableFront panel removing How to use the front panel Front panel openingFront panel closing Checking The Drainage Drain pipingForming The Piping Preparation Air PurgingAir purging With Vacuum Pump Leak testEvacuation Finishing the jobCharging Settlement of outdoor unit Prepare remote controlTest Running Evaluation of the performanceOperation Cooling Mode OperationHealthy Dehumidification Mode Function of ControlsHeating Mode Operation Defrost ControlJet Cool Mode Operation C/O Model Sleep Timer OperationChaos Natural Wind Mode Jet Cool Mode Operation H/P ModelAuto restart Forced operationTest operation Protection of the evaporator pipe from frostingHeating Model Display FunctionSelf-diagnosis Function Remote Control Operations Operation ModeDisassembly To remove the Grille from the ChassisTo remove the Control Box To remove the Motor Cover Cooling Only Models Troubleshooting GuideRefrigeration Cycle Diagram Cooling & Heating ModelsWay, 3-way Valve Way Valve Liquid SideProcedure Pumping DownBalance Refrigerant of the 3-way Valve Vacuum pump Gas Charging After EvacuationAccording to Indoor & Outdoor Temperature Method of using graphMethod of using equation Additional gas chargingCycle Parts Trouble analysisElectronic Parts Product does not operate at allProduct is not operate with the remote controller Compressor/Outdoor Fan are unable to drive When indoor Fan does not operate NectorWhen Vertical Louver does not operate When a comunication error occurs Phenomena in case of connecting error Indoor UnitOutdoor Unit Schematic Diagram Electric Control DeviceOutdoor 12k Wiring Diagram Models 12kModels 12kC/O Models 12kH/P Components Location Outdoor12k 6871A20259D 6871A00087B6871A00088A 6306A90009AProduct Specifications Cooling OnlyCooling & Heating E.R P.EExploded View Outdoor Unit 12k Btu/h Seriess W0CZZReplacement Parts List Parts List IndoorParts List Outdoor No. MFL31443001

LA121HPMI, LAU121CNM, LAN121CNM, LAN121CNM, LAU121CNM, LA121HPMI, LA121HPMO, LAN121HNM, LAU121HNM, LA121CPMI, LA121CPMO specifications

LG Electronics has established itself as a leader in innovative home appliance technologies, particularly in the air conditioning segment. The LG LAN121CNM, LAU121CNM, LA121HPMI, LA121HPMO, LAN121HNM, LAU121HNM, LA121CPMI, and LA121CPMO models exemplify the blend of efficiency, comfort, and advanced features that LG is known for.

These air conditioning units are designed with energy efficiency in mind, boasting high SEER (Seasonal Energy Efficiency Ratio) ratings that help reduce electricity consumption. This not only saves money on energy bills but also aligns with eco-friendly initiatives by minimizing environmental impact.

The air conditioners are equipped with LG's Dual Inverter technology, which enhances cooling performance while reducing noise levels. This innovative technology allows the compressor to operate at variable speeds, resulting in faster cooling and dehumidification, as well as quieter operation than traditional units.

Moreover, the models feature a modern aesthetic with sleek designs that seamlessly blend into both residential and commercial environments. The intuitive user interface, combined with remote control capabilities, makes adjusting temperature settings easier for users, giving them full control over their indoor climate.

Another significant characteristic of these models is the use of advanced filtration systems. Many units incorporate a multi-stage filtration process that captures dust, allergens, and pollutants, ensuring the air quality in the home remains high. These filters are easy to clean and replace, making maintenance straightforward and user-friendly.

The LG LAN121CNM, LAU121CNM, and others in the lineup also include Wi-Fi connectivity. This smart technology allows users to monitor and control their air conditioning units through mobile applications, providing convenience and flexibility. Users can adjust settings, schedule operations, and receive alerts about filter maintenance directly from their smartphones.

For those looking for flexibility, these models offer various installation options. They can be installed as wall-mounted, floor-mounted, or ceiling-mounted systems, catering to different space constraints and design preferences.

In conclusion, the LG LAN121CNM, LAU121CNM, LA121HPMI, LA121HPMO, LAN121HNM, LAU121HNM, LA121CPMI, and LA121CPMO air conditioning models are exemplary products that demonstrate LG’s commitment to quality, efficiency, and user-centric design. With cutting-edge technology and a focus on sustainability, these units cater to the needs of modern consumers while ensuring comfort all year round.