LG Electronics LCN240CP service manual Cycle Troubleshooting Guide, Trouble analysis

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Troubleshooting Guide

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(0°F)

All amount of refrigerant leaked out.

 

Current

: less than 80% of

 

Check refrigeration cycle.

 

 

 

rated current

 

 

 

 

 

 

Refrigerant leakage

 

 

 

 

Temp. difference

: approx. 8°C(14.4°F)

 

Current

: less than 80% of

Clog of refrigeration cycle

 

 

rated current

Defective compressor

 

 

 

 

 

 

 

 

 

Temp. difference

: less than 8°C(14.4°F)

Excessive amount of refrigerant

 

Current

: near the rated cur-

 

 

 

 

rent

 

 

 

 

 

Temp. difference : over 8°C(14.4°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.

32Ceiling Cassette Air Conditioner

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Contents Ceiling Cassette Air Conditioner Table of Contents Models List Indoor unitsOutdoor units Local model nameSafety Precautions InstallationDo not install, remove, or re Defective installation standOperational Do not let electric parts of the product get wetBe cautious that water could not enter the product Keep level even when installing the product ThinnerUse two or more people to lift and transport the product Do not step on or put anyting on the product. outdoor unitsFeatures & Benefits Swirl Swing Space ControlAuto Restart Operation Two Thermistor ControlTime Delay Safety Function Zero Standby PowerHigh Ceiling Operation Water Drain PumpList of Functions Ceiling CassetteNd F Button Function of Remote ControlWireless LCD Remote Control Wired LCD Remote Control Specifications Indoor unit type Ceilling Cassette 4way ModelAT-C243HLFO AT-C343HLFO Dimensional Drawings Model No. LCN240CP/LC240CPI/LCN340CP/LC340CPIModel No. LCU240CP/LC240CPO Model No. LCU340CP/LC340CPO Wiring Diagrams Indoor UnitOutdoor Unit LCU340CP/LC340CPORefrigerant Cycle Diagrams Cooling Only ModelsInstallation Select the best locationIndoor Unit Outdoor UnitIndoor Unit Installation Settlement of outdoor unitWiring Connection 24k/34k Btu/h 1Ø Cooling & Heating typeInstallation of Decoration Panel Air conditioner unit Piping sideHeat Insulation and pipings Heat InsulationDrain test Drain Pipe WorkDrain Piping of Ceiling Cassette Precautions in Test RUN Test runningConnection of power supply Evaluation of the performanceOptional Operation Two Thermistor SystemAdjusting air volume to the height of ceiling ProcedureWiring design Remote ControllerTrouble analysis Troubleshooting GuideCycle Troubleshooting Guide Electronic Parts Troubleshooting Guide TroubleProduct doesnt operate with the remote controller When cooling does not operate When indoor Fan does not operate Trouble 5 When Vertical Louver does not operate Indoor Error Outdoor ErrorError Indicator Self-diagnosis FunctionTroubleshooting CH01, CH02, CH06 Check PointTroubleshooting CH03 Troubleshooting CH04 Troubleshooting CH05, CH53 Troubleshooting CH24, CH25 Troubleshooting CH32, CH33 ConstantTroubleshooting CH41, CH44, CH45, CH46, CH47, CH65 Troubleshooting CH51, CH60 Troubleshooting CH61, CH62 Way Valve Way Valve Liguid Side Way Valve Gas SideProcedure Pumping downAir 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 Mount the valve stem nuts and the service port nut Gas ChargingAfter Evacuation Connect the gauge to the charging cylinderElectronic Control Device Main P.C.B ASMExploded View and Replacement Parts List Model No. LCN240CP/LCN340CPParts List Description RemarksModel No. LCU240CP Description Remarks LCU240CP / LC240CPO Model No Description Remarks LCU340CP / LC340CPO Model No. PT-CDC1 Description Remarks PT-CDC1 No A20911A

LCN240CP specifications

LG Electronics has long been a leading player in the home appliance market, renowned for its innovative approach to technology and design. One of its standout products is the LG LCN240CP, a state-of-the-art refrigerator that embodies the brand's commitment to quality and performance.

The LG LCN240CP refrigerator features a sleek and modern design, making it an attractive addition to any kitchen. With a generous capacity, it provides ample storage space for all your food and beverages. Its thoughtfully designed interior organizes food efficiently, allowing consumers to access items easily while maximizing space.

One of the standout technologies in the LG LCN240CP is its Smart Inverter Compressor. This advanced feature ensures optimal cooling performance while reducing energy consumption. The compressor adjusts its speed in response to varying demands, helping to maintain the desired temperature without the energy waste associated with traditional compressors. As a result, users benefit not only from improved food preservation but also from lower energy bills.

Another impressive characteristic of the LG LCN240CP is its Smart Diagnosis feature. This enables users to troubleshoot potential issues quickly via a smartphone app. By simply following the prompts, users can identify and resolve problems effectively, minimizing downtime and inconvenience.

The refrigerator also comes equipped with LG's ThinQ technology, providing smart-home integration capabilities. This feature allows users to control settings and receive alerts from their smartphones, ensuring that they can manage their appliance effortlessly from anywhere.

In terms of temperature management, the LG LCN240CP boasts a Multi Air Flow system. This system circulates cool air evenly throughout the refrigerator, helping to maintain consistent temperatures and extending the freshness of food items. Additionally, the refrigerator includes an external water and ice dispenser, providing convenient access to chilled water and ice cubes.

The interior of the LG LCN240CP is designed with user convenience in mind. Adjustable shelves, door bins, and humidity-controlled crispers help maintain optimal storage conditions for various food types. Its stainless-steel finish offers not only durability but also a modern aesthetic that appeals to contemporary homeowners.

In summary, the LG Electronics LCN240CP refrigerator combines energy-efficient technology, advanced smart features, and user-friendly design. With its impressive capacity and smart functionalities, it represents a perfect choice for those looking to upgrade their kitchen appliances and enhance their food storage capabilities.