LG Electronics AMNC093APM0(LMAN090CNS) Cycle Troubleshooting Guide, Trouble analysis

Page 66

Troubleshooting Guide

CycleTroubleshooting Guide

Trouble analysis

1. Check temperature difference between intake and discharge air, and operating current.

Temp. Difference

Operating Current

 

Temp. difference

: approx. 0°C(32°F)

 

Current

: less than 80% of

 

 

 

rated current

 

 

 

 

 

 

 

Temp. difference

: approx. 8°C(46.4°F)

 

Current

: less than 80% of

 

 

rated current

 

 

 

 

 

 

 

Temp. difference

: less than 8°C(46.4°F)

 

Current

: near the rated cur-

 

 

 

rent

 

 

 

All amount of refrigerant leaked out. Check refrigeration cycle.

Refrigerant leakage

Clog of refrigeration cycle

Defective compressor

Excessive amount of refrigerant

Temp. difference : over 8°C(46.4°F)

Normal

Notice:

Temperature difference between intake and discharge air depends on room air humidity. When the room air humidity is relatively higher, temperature difference is smaller. When the room air humidity is relatively lower temperature difference is larger.

2. Check temperature and pressure of refrigeration cycle.

Suction pressure

Temperature

 

 

(Compared with

(Compared with

Cause of Trouble

Description

the normal value)

the normal value)

 

 

 

 

 

 

 

High

Defective compressor

Current is low.

Higher

 

 

 

Normal

Excessive amount of

High pressure does not quickly

 

 

 

refrigerant

rise at the beginning of operation.

 

 

 

 

 

 

Insufficient amount of

Current is low.

Lower

Higher

refrigerant(Leakage)

 

 

 

Clogging

 

 

 

 

 

Notice:

1.The suction pressure is usually 4.5~6.0 kg/cm2G at normal condition.

2.The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty.

66Multi type Air Conditioner

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Contents Multi Type Air Conditioner Indoor Unit Room Type Art Cool TypeTable of Contents Model Number Nomenclature Indoor UnitOutdoor Unit Symbols Used in this Manual Combination tableBe sure not to do Be sure to follow the instruction Safety PrecautionsInstallation Control box securely Cuit and breakerBe sure the installation area does not deteriorate with age Do not place anything on the power cableBe cautious when unpacking OperationSmoke comes from product Nect the power supply cableDo not allow water to run into electric parts Hurricane arrivesInstalling the product When the product is soakedInstall the drain hose to ensure that Keep level even when Not enter the productVents, etc OperationalAir flow Not use harsh detergents, solDo not step on or put anyting on the product. outdoor units Ly. Clean the filter every twoWhen cleaning or maintaining Do not drink the water drained from the productDimensions Indoor UnitSplit Type Indoor Outdoor Unit Product Specifications Indoor UnitOutdoor Unit Multiple piping models Model A2UC243FA0LMU240CE A2UH243FA0LMU240HEInstallation Installation PartsInstallation Tools Rooftop Installations Select the best locationOutdoor unit Piping length and elevation Multi Piping Type24k Fixing Installation PlateStandard Type Remove cover pipe and cover side Preparing work for Installation Artcool Type OnlyOpen panel front Drain hose junctionDrill a hole in the wall Sticking the installation guide map and fixing Indoor unitPut an Installation Guide Map on the desired surface Drive the fore plastic anchors into drilled pointsFlaring Work and Connection of Piping Flaring workConnecting the Piping CheckIndoor Wrap the insulation material around the connecting por- tion For left rear piping Connection Indoor Panel AssemblyArt Cool Type only Drive two screwsGood case Bad caseRemote Control Preparationoptional Outdoor Outdoor unitConnecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the Indoor unitConnect the cable to the Outdoor unit Outdoor unitConnection method of the connecting cableExample How to connect wiring to the terminalsAttach the Grille onto the cabinet Checking the drainage To check the drainageDrain piping Forming the piping Preparation Air Purging and EvacuationChecking method Leakage testRepeat evacuation procedure for each indoor unit EvacuationFinishing the job Charging AdditionalTest Running Split, Art Cool TypeHeating Mode Operation Cooling Mode OperationSoft Dry Operation Mode OperationDefrost ControlHeating Fuzzy OperationFuzzy Operation for Cooling Airflow Speed Selection On-Timer OperationOff-Timer Operation Fuzzy Operation for DehumidificationChaos Swing Mode Off-Timer = On-Timer OperationSleep Timer Operation Chaos Natural Wind ModeForced Operation Buzzer Sounding OperationFunction of Indoor Unit Split Type Indoor UnitOperation IndicatorArt Cool Type Indoor Unit DefrostDeice control HeatingFunction of Outdoor Unit Remote Control Operation Cooling Model , Heat Pump Model15 2nd F Button Disassembly To remove the Grille from the ChassisTo remove the Control Box To remove the Motor Cover To remove the Control Box To remove the Evaporator Before removing the Turbo FanTo remove the Motor Schematic Diagram Electronic Control DeviceSplit Type Outdoor TMP87CM41F RY-4WAY RY-LIQ RY-GAS RY-FANL RY-FANH Wiring Diagram Art Cool Type Indoor UnitComponents Locations Bottom ViewArt Cool Type Schematic Diagram Component side Solder side A2UH243FA0LMU240HE Troubleshooting GuideRefrigeration Cycle Diagram A2UC243FA0 LMU240CEError Indicator Indoor ErrorOutdoor Error Self-diagnosis FunctionCycle Troubleshooting Guide Trouble analysisElectronic Parts Troubleshooting Guide Procedure Specification RemedyProduct doesnt operate with the remote controller Compressor/Outdoor Fan are dont operate Check Point Comp. on Comp. OFFTrouble 4 When indoor Fan does not operate NectorTroubleshooting Guide Indoor air sensor Error CodeCheck Point Indoor inlet pipe sensorPower input AC 230V.Outdoor, Indoor Communication line is shorted at GNDError Title Cause of error Check point & Normal condition Condensor pipe sensor Title Cause of error Check point & Normal conditionOutdoor air sensor Pipe sensorWay, 3-way Valve Way Valve Liguid SideAir purging of the charge hose ProcedurePumping down Set the liquid side valve to the closed positionMount the valve caps and the service port caps EvacuationAll amount of refrigerant leaked After Evacuation Mount the valve stem nuts and the service port nutGas Charging Connect the gauge to the charging cylinderExploded View & Replacement Parts List S4, SE chassisParts List S4, SE chassis S4 chassis SE chassisLMN090HE SP3 Chassis Art Cool Type Parts List SP3 chassis Filter ASSEMBLY,AIR CleanerA2UC243FA0 LMU240CE Parts List A2UH243FA0LMU240HE, A2UC243FA0 LMU240CE LocationDescription 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.
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