LG Electronics AS-W096URH0/UBH0/UWH0/UMH0, AS-W126URH1/UBH1/UWH1/UMH1 Self-diagnosis function

Page 67

Troubleshooting Guide

Self-diagnosis function

1. The malfunction indicator of indoor (see the operating LED of the INDOOR)

Error

The cause of malfunction

Malfunction indicator

The operating state

Code

 

 

 

 

 

 

 

1

Indoor TH. is short or open.

The operating LED will be blink-

Keep operating state.

 

ing once.

 

 

 

 

 

 

 

 

2

Outdoor TH. is short or open.

The operating LED will be blink-

Keep operating state.

 

ing twice.

 

 

 

 

 

4

Temp. of Heat sink is over 95°C.

The operating LED will be blink-

Restart compressor when Heat sink

/Heat sink TH. is short or open.

ing 4 times.

Temp is 85°C below.

 

 

 

 

 

5

Comunication error (serial

The operating LED will be blink-

The operation is off(enable to restart

comunication).

ing 5 times.

by remote controller).

 

 

 

 

6

DC peak error.

The operating LED will be blink-

Compressor will be turned off immediately.

 

ing 6 times.

(not enable to restart by remote controller)

 

 

 

 

7

Running current is over-

The operating LED will be blink-

Compressor will be turned off immediately.

loaded. (CT2)

ing 7 times.

(not enable to restart by remote controller)

 

 

 

 

8

Indoor fan lock error

The operating LED will be blink-

The operation is off(enable to restart

(BLDC fan model)

ing 8 times.

by remote controller).

 

 

 

 

 

9

Outdoor fan lock error

The operating LED will be blink-

The operation is off(enable to restart

(BLDC fan model)

ing 9 times.

by remote controller).

 

 

 

 

 

 

D-PIPE TH is short or open.

The operating LED will be blink-

Compressor will be turned off immediately.

10

(restart compressor when D-PIPE TH. is

 

ing 10 times.

 

 

recovred)

 

 

 

❈Error code ➅, ➆ can’t be operated unless the power cord is removed.

2.The malfunction indicator of outdoor (see the LED01M on the outdoor PCB ass’y)

Error

The cause of malfunction

Malfunction indicator

The operating state

Code

 

 

 

 

 

 

 

2

Indoor TH. is short or open.

The LED01M will be blinking

Keep operating state.

 

twice.

 

 

 

 

 

 

 

 

4

Temp. of Heat sink is over 95°C,

The LED01M will be blinking 4

Restart compressor when heat sink

or Heat sink TH. is shortor open.

times.

Temp. is 85°C below.

 

 

 

 

 

5

Comunication error (serial

The LED01M will be blinking 5

The operation is off(enable to restart

comunication).

times.

by remote controller).

 

 

 

 

 

6

DC peak error.

The LED01M will be blinking 6

Compressor will be turned off immediately.

 

times.

(not enable to restart by remote controller)

 

 

 

 

 

 

7

Running current is over-

The LED01M will be blinking 7

Compressor will be turned off immediately.

loaded.

times.

(not enable to restart by remote controller)

 

 

 

 

 

9

Outdoor fan lock error

The LED01M will be blinking 9

The operation is off(enable to restart

(BLDC fan model)

times.

by remote controller).

 

 

 

 

 

 

D-PIPE TH is short or open.

The LED01M will be blinking 10

Compressor will be turned off immediately.

10

(restart compressor when D-PIPE TH. is

 

times.

 

recovered)

 

 

 

Service Manual 67

Page 66 Page 68
Image 67
Page 66 Page 68
Contents LG Room Air Conditioner Table of Contents 2002 LG Model NameCode Type Code of Model Meaning Meaning 2003~2005Installation Safety PrecautionsThere is risk of fire, electric shock, explosion, or injury Thinner OperationBe cautious that water could not enter the product Keep level even when installing the productOperation 9k, 12k Btu Series DimensionsSymbols Used in this Manual Indoor UnitOutdoor Unit AS-W096U0 AS-W126U0 AS-W096U1 AS-W126U1 Product SpecificationsOutdoor unit InstallationSelect the best Location Indoor unitOil trap should be installed every 5~7 meters Fixing Installation PlatePiping Length and Elevation Flaring Work Drill a Hole in the WallFoamed polyethylene or equivalent is recom- mended Connecting the PipingCheck IndoorWrap the insulation material around the connecting portion For left rear piping Indoor unit installation Bad case For left piping. Follow the instruction below Good caseOutdoor unit OutdoorConnecting the Cables Circuit Grade Breaker To check the drainage Checking the DrainageDrain piping Forming the Piping Air purging Air PurgingAir purging with vacuum pump Evacuation Soap water methodFinishing the job Evaluation of the performance Prepare remote controllerTest Running Settlement of outdoor unitPump Down Pump Down ProcedureFunctions Stand by control at low temp Power relay controlActive power filter controlPSC Overheatng. ProtectionPower moduleCooling Down to 18C Heating Down to 16C Up to 30C Cancel Sleep Mode, Timer on or Timer OFF3, 4, 5, 6 Off Timer High39C Low11CLED display of indoor unit OperationLG Brand/OEM Brand Control method Protection of the evaporator pipe from frostingModel Comp. Operating frequency Cooling mode operationIntake air Temp Setting Temp Healthy Dehumidification mode operationOperating freq. step of comp Heating mode operationTemp. differences Comp. Operating frequency At beginning Fuzzy mode operationOptionalsIntake air temp Setting temp Fan speed Fuzzy operation for coolingFuzzy operation for dehumidification Fuzzy operation for HeatingChaos swing mode Jet cool mode operationJet heat mode operation Swing modeSleep timer operation for cooling cycle Sleep timer operationSleep timer operation for heating cycle Trial Operation Indoor temp Operating Mode Setting tempAuto restarting operation Forced operationProtection from DC Peak Current Protection from total current controlPortection from overheating of compressor Portection from overheating of power moduleAS-W096/126U0 Series Defrosting controlAS-W096/126U1 Series Auto ChangeoverOptional Auto CleaningLow Ambient To remove the Grille from the Chassis DisassemblyTo remove the Discharge Grille To remove the Control BoxTo remove the Evaporator To remove the Cross-Flow Fan To remove the Motor CoverElectric Control Device Schematic DiagramIndoorAS-W096U 0, AS-W126U 0 Series OutdoorAS-W096Series, AS-W126Series Indoor Unit AS-W096/126U0,1 Series Wiring DiagramAS-W126U0 Series Outdoor Unit AS-W096U0 SeriesComponents Location Indoor Main P.W.B Assembly DC PartDisplay ASSEMBLYAS-W096/126U0,1 Series Outdoor Main P.W.B Assembly AS-W096/126U0 Series Model Adopted Electrion Expansion Valve Troubleshooting GuideRefrigeration Cycle Diagram Model Capillary TubePipe Length and the Elevation Oil trap should be installed per 5~7 metersOutdoor unit Indoor unit Way Valve Liquid Side Way, 3-way ValvePurge the air from the system ProcedureAir purging Check for gas leakageAir purging of the charge hose Pumping DownSet the 2-way valve to the closed position Air purging Re-installationMount the valve stem nuts and the service port nut Re-air PurgingGas leakage Balance Refrigerant of the 3-way ValveAll amount of refrigerant leaked EvacuationPurge the air from the charge hose Gas ChargingAfter Evacuation Connect the charge hose to the charging cylinderTrouble analysis Cycle PartsSelf-diagnosis function Diagnosis Procedure Precaution in Service or CheckElectronic Parts Procedure Specification RemedyProduct doesnt operate with the remote controller Check Point Comp. on Comp. OFF Compressor/Outdoor Fan are unable to driveWhen indoor Fan does not operate Trouble 5 When the horizontal louver does not operate Heater does not operate at all Indoor Outdoor Outdoor Unit does not operate at allDC Peak ErrorError Code ➅ Trouble 8-1When compressor does not operate normallyCommunication error between Indoor and Outdoor Error Code ➄ Trouble 8-2When compressor does not oprate normallyCT Error Error Code ➆ Trouble 8-3When compressor does not oprate normallyCN-T/Block Problem of missing the connector Indoor Main PCB AssyProblem of missing the connector Outdoor Main PCB Assy Connectors Condition Problem error modeIndoor Unit Exploded ViewOutdoor Unit Description Replacement Parts ListPanel ASSY, Front SUB No A20061Z October
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