LG Electronics LCN240CP service manual When cooling does not operate

Page 35

Troubleshooting Guide

Trouble 3

When cooling does not operate

 

 

 

 

 

Turn on Main Power

 

 

 

Operate "Cooling Mode( )" by setting the desired temperature of the remote controller is less than one of the indoor temperature by 1°C at least.

When in Air Circulation Mode, Compressor/Outdoor Fan is stopped.

Check the sensor for indoor temperature is attached as close as to be effected by the temperature of Heat Exchanger(EVA).

When the sensor circuit for indoor temperature and connector are in bad connection or are not engaged, Compressor/Outdoor Fan is stopped.

Check the indoor temperature sensor is disconnected or not(About 10k/ at 25°C(77°F)).

Check Relay(RY - COMP) for driving compressor.

When the power(About AC208V-230V) is applied to the connecting wire terminal support transferred to compressor, PWB Ass'y is normal.

Check the circuit related to the relay.

Check point

COMP ON

COMP OFF

 

 

 

Between two pin of DC

Below DC 1V

About DC12V

part in relay for COMP

(app)

 

 

 

 

Service Manual 35

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Contents Ceiling Cassette Air Conditioner Table of Contents Local model name Models ListIndoor units Outdoor unitsInstallation Safety PrecautionsDo not let electric parts of the product get wet Do not install, remove, or reDefective installation stand OperationalBe cautious that water could not enter the product Do not step on or put anyting on the product. outdoor units Keep level even when installing the productThinner Use two or more people to lift and transport the productFeatures & Benefits Two Thermistor Control Swirl SwingSpace Control Auto Restart OperationWater Drain Pump Time Delay Safety FunctionZero Standby Power High Ceiling OperationCeiling Cassette List of FunctionsNd F Button Function of Remote ControlWireless LCD Remote Control Wired LCD Remote Control Indoor unit type Ceilling Cassette 4way Model SpecificationsAT-C243HLFO AT-C343HLFO Model No. LCN240CP/LC240CPI/LCN340CP/LC340CPI Dimensional DrawingsModel No. LCU240CP/LC240CPO Model No. LCU340CP/LC340CPO Indoor Unit Wiring DiagramsLCU340CP/LC340CPO Outdoor UnitCooling Only Models Refrigerant Cycle DiagramsOutdoor Unit InstallationSelect the best location Indoor UnitSettlement of outdoor unit Indoor Unit Installation24k/34k Btu/h 1Ø Cooling & Heating type Wiring ConnectionAir conditioner unit Piping side Installation of Decoration PanelHeat Insulation Heat Insulation and pipingsDrain test Drain Pipe WorkDrain Piping of Ceiling Cassette Test running Precautions in Test RUNEvaluation of the performance Connection of power supplyTwo Thermistor System Optional OperationRemote Controller Adjusting air volume to the height of ceilingProcedure Wiring designTrouble analysis Troubleshooting GuideCycle Troubleshooting Guide Trouble Electronic Parts Troubleshooting GuideProduct 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 Self-diagnosis Function Indoor ErrorOutdoor Error Error IndicatorCheck Point Troubleshooting CH01, CH02, CH06Troubleshooting CH03 Troubleshooting CH04 Troubleshooting CH05, CH53 Troubleshooting CH24, CH25 Constant Troubleshooting CH32, CH33Troubleshooting CH41, CH44, CH45, CH46, CH47, CH65 Troubleshooting CH51, CH60 Troubleshooting CH61, CH62 Way Valve Liguid Side Way Valve Gas Side Way ValveSet the liquid side valve to the closed position ProcedurePumping down Air purging of the charge hoseAll amount of refrigerant leaked Mount the valve caps and the service port capsEvacuation Connect the gauge to the charging cylinder Mount the valve stem nuts and the service port nutGas Charging After EvacuationMain P.C.B ASM Electronic Control DeviceModel No. LCN240CP/LCN340CP Exploded View and Replacement Parts ListDescription Remarks Parts ListModel 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.