LG Electronics AMNH123DEA0 (LMN120HE) Self-diagnosis Function, Indoor Error, Outdoor Error

Page 65

Troubleshooting Guide

Self-diagnosisFunction

■Error Indicator

•The function is to self-diagnoisis airconditioner and express the troubles identifically if there is any trouble.

•Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table.

•If more than two troubles occur simultaneously, primarily the highest trouble fo error code is expressed.

•After error occurrence, if error is released, error LED is also released simultaneously.

•To operate again on the occurrence of error code, be sure to turn off the power and then turn on.

•Having or not of error code is different from Model.

LED1 LED2

Indoor Error

Error code

Description

MPS Variable

LED1

LED2

Indoor Status

 

 

 

 

 

 

00

No Error

 

 

 

ON

 

 

 

 

 

 

01

Indoor Room Thermistor Error

 

1 time

 

OFF

 

 

 

 

 

 

02

Indoor In-Piping Error

 

2 times

 

OFF

 

 

 

 

 

 

05

Communication Error between In and Out

 

5 times

 

OFF

 

 

 

 

 

 

06

Indoor Out-Piping Error

 

6 times

 

OFF

 

 

 

 

 

 

07

Differnt mode operation

 

7 times

 

OFF

 

 

 

 

 

 

10

Indoor fan motor locked error

 

 

1 times

OFF

 

 

 

 

 

 

Outdoor Error

Error code

Description

MPS Variable

LED1(Red)

LED2(Green)

Indoor Status

 

 

 

 

 

 

33

D-Pipe High(Normal)

 

3 times

3 times

OFF

 

 

 

 

 

 

44

Outdoor Air Thermistor Error(Open/Short)

 

4 times

4 times

OFF

 

 

 

 

 

 

45

Cond Pipe Thermistor Error(Open/Short)

 

4 times

5 times

OFF

 

 

 

 

 

 

47

Const. D-Pipe Thermistor Error(Open/Short)

 

4 times

7 times

OFF

 

 

 

 

 

 

51

Capcity Error(High/Low)

 

5 times

1 times

OFF

 

 

 

 

 

 

Service Manual 65

Page 64 Page 66
Image 65
Page 64 Page 66
Contents Indoor Unit Room Type Art Cool Type Multi Type Air ConditionerTable of Contents Outdoor Unit Model Number NomenclatureIndoor Unit Combination table Symbols Used in this ManualInstallation Safety PrecautionsBe sure not to do Be sure to follow the instruction Control box securely Cuit and breakerBe cautious when unpacking Do not place anything on the power cableBe sure the installation area does not deteriorate with age OperationDo not allow water to run into electric parts Nect the power supply cableSmoke comes from product Hurricane arrivesInstall the drain hose to ensure that Keep level even when When the product is soakedInstalling the product Not enter the productAir flow OperationalVents, etc Not use harsh detergents, solWhen cleaning or maintaining Ly. Clean the filter every twoDo not step on or put anyting on the product. outdoor units Do not drink the water drained from the productSplit Type Indoor DimensionsIndoor Unit Outdoor Unit Indoor Unit Product SpecificationsModel A2UC243FA0LMU240CE A2UH243FA0LMU240HE Outdoor Unit Multiple piping modelsInstallation Tools InstallationInstallation Parts Outdoor unit Rooftop InstallationsSelect the best location 24k Piping length and elevationMulti Piping Type Fixing Installation PlateStandard Type Open panel front Preparing work for Installation Artcool Type OnlyRemove cover pipe and cover side Drain hose junctionPut an Installation Guide Map on the desired surface Sticking the installation guide map and fixing Indoor unitDrill a hole in the wall Drive the fore plastic anchors into drilled pointsFlaring work Flaring Work and Connection of PipingIndoor Connecting the PipingCheck Wrap the insulation material around the connecting por- tion For left rear piping Connection Indoor Drive two screws Panel AssemblyArt Cool Type onlyBad case Good caseRemote Control Preparationoptional Outdoor unit OutdoorConnect the cable to the Indoor unit Connecting the Cable between Indoor Unit and Outdoor UnitOutdoor unit Connect the cable to the Outdoor unitHow to connect wiring to the terminals Connection method of the connecting cableExampleAttach the Grille onto the cabinet Drain piping Checking the drainageTo check the drainage Forming the piping Checking method Air Purging and EvacuationPreparation Leakage testFinishing the job Repeat evacuation procedure for each indoor unitEvacuation Additional ChargingSplit, Art Cool Type Test RunningSoft Dry Operation Mode Cooling Mode OperationHeating Mode Operation OperationFuzzy Operation for Cooling Defrost ControlHeatingFuzzy Operation Off-Timer Operation On-Timer OperationAirflow Speed Selection Fuzzy Operation for DehumidificationSleep Timer Operation Off-Timer = On-Timer OperationChaos Swing Mode Chaos Natural Wind ModeBuzzer Sounding Operation Forced OperationSplit Type Indoor Unit Function of Indoor UnitArt Cool Type Indoor Unit IndicatorOperation DefrostDeice control HeatingFunction of Outdoor Unit 15 2nd F Button Remote Control OperationCooling Model , Heat Pump Model To remove the Grille from the Chassis DisassemblyTo remove the Control Box To remove the Motor Cover To remove the Control Box To remove the Motor To remove the EvaporatorBefore removing the Turbo Fan Split Type Schematic DiagramElectronic Control Device Outdoor TMP87CM41F RY-4WAY RY-LIQ RY-GAS RY-FANL RY-FANH Art Cool Type Indoor Unit Wiring DiagramBottom View Components LocationsArt Cool Type Schematic Diagram Component side Solder side Refrigeration Cycle Diagram Troubleshooting GuideA2UH243FA0LMU240HE A2UC243FA0 LMU240CEOutdoor Error Indoor ErrorError Indicator Self-diagnosis FunctionTrouble analysis Cycle Troubleshooting GuideProcedure Specification Remedy Electronic Parts Troubleshooting GuideProduct doesnt operate with the remote controller Check Point Comp. on Comp. OFF Compressor/Outdoor Fan are dont operateNector Trouble 4 When indoor Fan does not operateTroubleshooting Guide Check Point Error CodeIndoor air sensor Indoor inlet pipe sensorCommunication line is shorted at GND Power input AC 230V.Outdoor, IndoorError Title Cause of error Check point & Normal condition Outdoor air sensor Title Cause of error Check point & Normal conditionCondensor pipe sensor Pipe sensorWay Valve Liguid Side Way, 3-way ValvePumping down ProcedureAir purging of the charge hose Set the liquid side valve to the closed positionAll amount of refrigerant leaked Mount the valve caps and the service port capsEvacuation Gas Charging Mount the valve stem nuts and the service port nutAfter Evacuation Connect the gauge to the charging cylinderS4, SE chassis Exploded View & Replacement Parts ListLMN090HE Parts List S4, SE chassisS4 chassis SE chassis SP3 Chassis Art Cool Type Filter ASSEMBLY,AIR Cleaner Parts List SP3 chassisA2UC243FA0 LMU240CE Description Parts List A2UH243FA0LMU240HE, A2UC243FA0 LMU240CELocation April No A20462Z

AMNC093APM0(LMAN090CNS), AMNH123DEA0 (LMN120HE), A2UC243FA0 (LMU240CE), AMNH123APM0(LMAN120HNS), A2UH243FA0(LMU240HE) specifications

LG Electronics has established a prominent position in the HVAC (heating, ventilation, and air conditioning) market with its diverse range of air conditioning units, including models AMNH123APM0 (LMAN120HNS), AMNH123DEA0 (LMN120HE), AMNC123DEA0 (LMN120CE), A2UH243FA0 (LMU240HE), and A2UC243FA0 (LMU240CE). Each of these models is designed to provide efficient cooling and heating solutions, boasting advanced technologies and user-friendly features.

The AMNH123APM0 (LMAN120HNS) model stands out for its energy efficiency, thanks to its inverter technology that adjusts power consumption according to the cooling or heating demand. This feature not only reduces energy costs but also enhances the lifespan of the unit. Additionally, its compact design allows for easy installation in various residential or commercial settings.

Similarly, the AMNH123DEA0 (LMN120HE) offers robust performance with its variable-speed compressor technology. This model ensures precise temperature control and minimal fluctuations, promoting comfort throughout the space. The unit also incorporates a quiet operation mode, making it ideal for bedrooms or offices where noise levels need to be minimized.

The AMNC123DEA0 (LMN120CE) is another compelling choice, featuring a sleek design that fits seamlessly into any décor. It operates efficiently in various weather conditions, maintaining a consistent indoor climate year-round. Its smart diagnostic system simplifies maintenance, allowing for timely troubleshooting and ensuring long-term reliability.

For larger spaces, the A2UH243FA0 (LMU240HE) and A2UC243FA0 (LMU240CE) models provide effective solutions with their powerful cooling and heating capacities. These units are equipped with multi-zone capabilities, allowing users to customize temperatures for different areas of a building. The advanced filtration system in these models captures dust and allergens, improving indoor air quality.

Another noteworthy feature across these models is their SmartThinQ technology, which enables users to control their systems remotely via a smartphone app. This feature not only adds convenience but also facilitates energy management by allowing users to monitor and adjust settings on the go.

In conclusion, LG Electronics offers a range of HVAC solutions with its AMNH123APM0, AMNH123DEA0, AMNC123DEA0, A2UH243FA0, and A2UC243FA0 models. With energy-efficient technology, user-friendly features, and advanced performance capabilities, these air conditioning units are designed to meet the diverse cooling and heating needs of modern consumers while ensuring environmental sustainability.
Top Page Image Contents