LG WG8000E Service Manual Download

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Room Air Conditioner

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.

MODEL: WG8000E, LWG0812ACP

website http://www.lgservice.com
e-mail http://www.lgeservice.com/techsup.html

Summary of Contents for WG8000E

Page 1: ...Air Conditioner SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL WG8000E LWG0812ACP website http www lgservice com e mail http www lgeservice com techsup html ...

Page 2: ...LACEMENT PARTS LIST 26 1 PREFACE This SERVICE MANUAL provides various service information including the mechanical and electrical parts etc This room air conditioner was manufactured and assembled under a strict quality control system The refrigerant is charged at the factory Be sure to read the safety precautions prior to servicing the unit 1 1 SAFETY PRECAUTIONS 1 When servicing the unit set the...

Page 3: ... 1ø 115 60Hz 7 800 710 6 5 11 0 10 8 26 7 DB 19 4 WB 35 DB 23 9 WB 480g 16 90 Oz 3 ROW 14 STACKS SLIT FIN TYPE 2 ROW 16 STACKS L BENDED TYPE TURBO FAN PROPELLER TYPE FAN WITH SLINGER RING 2 3 6 POLES ROTARY SWITCH THERMOSTAT VERTICAL LOUVER RIGHT LEFT HORIZONTAL LOUVER UP DOWN SLIDE IN OUT CHASSIS OVERLOAD PROTECTOR INTERNAL THERMAL PROTECTOR 3 WIRE WITH GROUDING ATTACHMENT PLUG CORD CONNECTED TYP...

Page 4: ...e of arc for a cooler temperature in the room The temperature is selected by positioning the knob to the desired position The 5 or 6 position the middle position of arc is a normal setting for average conditions OPERATION OFF Turns the air conditioner to off MED FAN Permits the medium fan speed operation without cooling LOW FAN Permits the low fan speed operation without cooling HIGH COOL Permits ...

Page 5: ...nect the unit from the power source 2 Remove the front grille Refer to section 2 1 1 3 Remove the cabinet Refer to section 2 1 2 4 Remove the screw which fastens the control box cover 5 Remove the housing which connects motor wire in the control box 6 Remove the 3 leads from the compressor Refer to section 2 3 1 7 Discharge the capacitor by placing a 20 000 ohmresistor across the capacitor termina...

Page 6: ...ith a hand plier which secures the turbo fan 11 Remove the turbo fan 12 Remove the 4 screws which fasten the air guide from the barrier 13 Move the air guide backward pulling out from the base pan 14 Re install the components by referring to the removal procedure above 2 2 2 FAN AND SHROUD 1 Remove the cabinet Refer to section 2 1 2 2 Remove the brace Refer to section 2 2 1 3 Remove the screw whic...

Page 7: ... servicing the system 3 Remove the overload protector Refer to section 2 3 1 4 After purging the unit completely unbraze the suction and discharge tubes at the compressor connections 5 Remove the 3 nuts and the 3 washers which fasten the compressor 6 Remove the compressor See Figure 8 7 Re install the components by referring to the removal procedure above 2 3 3 CAPACITOR 1 Remove the control box R...

Page 8: ... terminals 5 Remove the thermostat 6 Re install the components by refereing to the above removal procedure See Figure 11 2 3 6 ROTARY SWITCH 1 Remove the control box Refer to section 2 1 3 2 Open the control box Refer to section 2 3 3 3 Remove the 2 screws which fasten the rotary switch 4 Disconnect all the leads of the rotary switch terminals 5 Remove the rotary switch 6 Re install the components...

Page 9: ...vaporator sideways carefully Refer to section 2 2 1 4 After discharging the refrigerant completely unbraze the interconnecting tube at the evaporator connections 5 Remove the evaporator carefully 6 Re install the components by referring to the removal procedure See Figure 15 2 4 3 CAPILLARY TUBE 1 Remove the cabinet Refer to section 2 1 2 2 After discharging the refrigerant completely unbraze the ...

Page 10: ...nifold connection 5 The system is now ready for final charging 6 Recharge as follows 1 Refrigeration cycle systems are charged from the High side If the total charge cannot be put in the High side the balance will be put in the suction line through the access valve which you installed as the system was opened 2 Connect the charging cylinder as shown in figure 16B With valve C open discharge the ho...

Page 11: ...r proof seal Leak detector Tubing cutter Hand Tools to remove components Service valve A COMPOUND GAUGE EVAPORATOR LOW PRESSURE SIDE COMPRESSOR CAPILLARY TUBE CONDENSER HIGH PRESSURE SIDE SEE INSETS BELOW MANIFOLD GAUGE B Figure 16A Pulling Vacuum Figure 16B Charging A B EXTERNAL VACUUM PUMP A CHARGING CYLINDER LOW HI B C ...

Page 12: ...ing The undermentioned items are especially important checking points when the installation is finished 1 Grounding wire Green or Green and Yellow is provided in the power cord The green wire must be grounded 2 Connect to a single outlet 15A circuit 3 To avoid vibration or noise make sure the air conditioner is installed securely 4 Avoid placing furniture or draperies in front of the air inlet and...

Page 13: ...W WIDTH A HEIGHT B 2 GASKET 3 WALL 4 DETAILS 5 1 x 30 ROUND HEAD WOOD SCREWS A B C D E F G H J K 495mm 366mm 250mm 30mm 0 25mm OVER 420mm 12mm 32mm 5 10mm 0 5mm 191 2 147 16 10 11 16 0 1 OVER 1617 32 1 2 11 4 3 16 3 8 0 3 16 1 2 3 4 8 13 10 7 6 5 9 12 11 B INSTALLATION KITS CONTENTS 22 to 36 Stool Interior wall 181 2 min Without frame curtain Offset 1 2 to 11 4 Sill Exterior 15 min With frame curt...

Page 14: ...s 6 Insert the frame guides into the bottom of the cabinet 7 Insert the Frame Curtain into the upper guide and frame guides 8 Fasten the curtains to the unit with 4 Type A screws CABINET INSTALLATION 1 Open the window Mark a line on center of the window stool or desired air conditioner location Carefully place the cabinet on the window stool and align the center mark on the bottom front with the c...

Page 15: ...elation to the selected position using 2 Type A screws in each support See Figure 23 6 The cabinet should be installed with a very slight tilt about 1 2 downward toward the outside See Figure 24 Adjust the bolt and the nut of sill support for balancing the cabinet 7 Attach the cabinet to the window stool by driving the screws Type B Length sixteen millimeters and below through the front angle into...

Page 16: ...dow locking bracket with a type C screw See Figure 28 13 Attach the front grille to the cabinet by inserting the tabs on the grille into the tabs on the front of the cabinet Push the grille in until it snaps into place See Figure 29 14 Lift the inlet grille and secure it with a type A screw through the front grille See Figure 30 15 Window installation of room air conditioner is now completed See E...

Page 17: ... the lower holes of front grille Then insert the filter See Figure 32 33 2 Attach the front grille to the cabinet by inserting the tabs on the grille into the tabs on the front of the cabinet Push the grille in until it snaps into place See Figue 34 3 Lift the inlet grille and secure it with a type A screw through the front grille See Figure 35 4 If you want to pull out the filter downward use the...

Page 18: ...UTSIDE COOLING AIR FOR REFRIGERANT PASS THROUGH SUCTION LINE COOL LOW PRESSURE VAPOR COOLED AIR COMPLETE LIQUID BOIL OFF POINT LIQUID PRESSURE DROP ROOM AIR HEAT LOAD VAPOR INLET HOT DISCHARGED AIR LIQUID OUTLET HIGH PRESSURE VAPOR LIQUID REFRIGERANT LOW PRESSURE VAPOR ROOM AIR CONITIONER EVAPORATOR COILS CONDENSER COILS CYCLE OF REFRIGERATION CAPILLARY TUBE COMPRESSOR BLOWER EVAPORATOR COIL CONDE...

Page 19: ...k gas leakage Repair gas leak Replacement of unit if the unit is beyond repair Satisfactory operation with temperature difference of inlet outlet air 44 50 F 7 10 C Check heat load increase Clean condenser Not on separate circuit Check inside gas pressure Adjusting of refrigerant charged Malfunction of compressor Replacement of compressor Check cold air circulation for smooth flow Dirty indoor coi...

Page 20: ...on Replacement of fan motor Regular but fails to start Replacement of compressor locking of piston metal Improper thermostat setting Loose terminal connection Improper wiring Irregular motor resistance Irregular motor insulation Replacement of compressor Motor damaged Drop of power voltage Check capacitor Replacement Compressor fails only to start Defect of compressor capacitor Check of power sour...

Page 21: ...heel hitting scroll Re align assembly Units using slinger ring condenser fan must have 1 4 to 5 16 inch clearance to the base If it hits the base shim up the bottom of the fan motor with mounting screw s Check fan motor bearings if motor shaft will not rotate replace the motor Check voltage See limits on this page If not within limits call an electrician Test capacitor Check bearings Does the fan ...

Page 22: ...ob If not at the coldest setting advance the knob to this setting and restart the unit Check continuity of the thermostat Replace the thermostat if the circuit is open Check the capacitor Replace if not within 10 of manufacturer s rating Replace if shorted open or damaged Check the compressor for open circuit or ground If open or grounded replace the compressor Check the compressor overload if ext...

Page 23: ...ck the terminals If loose repair or replace Check the system for a restriction If restricted clean of replace Close if open Determine if the unit is properly sized for the area to be cooled Check the set screw or clamp If loose or missing correct If the blower or fan is hitting air guide rearrange the air handling parts Remove the cabinet carefully rearrange the tubing not to contact cabinet compr...

Page 24: ...4AR3563A BL BL RD BK R C S YL YL RD BK BL RD ROTARY SWITCH BK BL L 7 1 8 6 4 2 H M OR BR OR BR BL RD BK THERMOSTAT CAPACITOR P T C RD BK F C H BR YL OLP 2 7 4 3 1 5 6 THERMOSTAT COMP MOTOR WH BL POWER INPUT Plain GN GN YL BK BR Ribbed WIRING DIAGRAM 3854A20022A BL RD BK R C S YL YL OR BR RD BK BL BL RD ROTARY SWITCH BK BL L 7 1 8 6 4 5 3 2 H M OR BR T BLOCK BL CAPACITOR RD BK F C C H BR BK BK WH W...

Page 25: ...6 EXPLODED VIEW 25 269310 266003 W0CZZ 135500 264110 137215 249950 149410 554031 ...

Page 26: ...32B R 149980 SHROUD 4998A10010A R 148000 BRACE 4800A30001A R 349480 ORIFICE 4948A30007A R 354210 EVAPORATOR ASSEMBLY FIRST 5421A20061A R 554031 CONDENSER ASSEMBLY BENT 5403A20043B R 249950 CONTROL BOX ASSEMBLY SINGLE 4995A20119M R 137215 PANEL ASSEMBLY CONTROL 3721A20037A R 149410 KNOB ASSEMBLY 4941A30011A R W0CZZ CAPACITOR 0CZZA20001W R 264110 POWER CORD ASSEMBLY 2H00677P R 269310 THERMOSTAT ASSE...

Page 27: ...148000 BRACE 4800A30001A R 349480 ORIFICE 4948A30007A R 354210 EVAPORATOR ASSY FIRST 5421A20061A R 554031 CONDENSER ASSY BENT 5403A20043B R 249950 CONTROL BOX ASSEMBLY SINGLE 4995A20119Q R 137215 PANEL ASSY CONTROL 3721A20037B R 149410 KNOB ASSY 4941A30011A R W0CZZ CAPACITOR DRAWING 0CZZA20007C R 264110 POWER CORD ASSY 2H00677P R 269310 THERMOSTAT ASSEMBLY 2H01109L R 266002 SWITCH ROCKER 2H01316C ...

Page 28: ...P No 3828A20038M September 2006 Printed in Korea ...

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