LG GR P227 P257 L227 L257 C227 C257 B227 B257Service Manual

REFRIGERATOR SERVICE MANUAL CAUTION PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS BOOK BEFORE CHECKING OR OPERATING THE REFRIGERATOR. http://biz.lgservice.com Ref No : GR-P227 GR-P257 Ref No : GR-L227 GR-L257 Ref No : GR-C227 GR-C257 Ref No : GR-B227 GR-B257

- 2 - CONTENTS WARNINGS AND PRECAUTIONS FOR SAFETY ................................................................................................................. 3 SPECIFICATIONS ................................................................................................................................................................... 4 PARTS IDENTIFICATION ....................................................................................................................................................... 5 HOW TO INSTALL THE REFRIGERATOR ............................................................................................................................ 7 HOW TO ADJUST DOOR HEIGHT OF THE REFRIGERATOR .......................................................................................... 7 HOW TO INSTALL WATER PIPE......................................................................................................................................... 8 HOW TO CONTROL THE AMOUNT OF WATER SUPPLIED TO THE ICEMAKER ......................................................... 12 MICOM FUNCTION ............................................................................................................................................................... 14 EXPLATION FOR MICOM CIRCUIT ..................................................................................................................................... 23 EXPLANATION FOR PWB CIRCUIT ................................................................................................................................. 23 COMPENSATION CIRCUIT FOR WEAK-COLD, OVER-COLD AT FREEZING ROOM ....................................................40 PWB PARTS DRAWING AND LIST ................................................................................................................................... 41 ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR ........................................................................... 44 WORKING PRINCIPLES ................................................................................................................................................... 44 FUNCTION OF ICE MAKER .............................................................................................................................................. 45 ICE MAKER TROUBLESHOOTING .................................................................................................................................. 48 CIRCUIT ................................................................................................................................................................................ 49 TROUBLE DIAGNOSIS ........................................................................................................................................................ 50 TROUBLE SHOOTING ...................................................................................................................................................... 50 FAULTS .............................................................................................................................................................................. 60 COOLING CYCLE HEAVY REPAIR .................................................................................................................................. 77 HOW TO DEAL WITH CLAIMS .......................................................................................................................................... 84 HOW TO DISASSEMBLE AND ASSEMBLE ....................................................................................................................... 89 DOOR ................................................................................................................................................................................. 89 SHROUD, GRILLE FAN ..................................................................................................................................................... 90 ICEMAKER ......................................................................................................................................................................... 90 WATER VALVE DISASSEMBLY METHOD ....................................................................................................................... 91 FAN and FAN MOTOR DISASSEMBLY METHOD ............................................................................................................ 91 DISPENSER ....................................................................................................................................................................... 92 HOME BAR ........................................................................................................................................................................ 94 EXPLODED VIEW ................................................................................................................................................................. 95 REPLACEMENT PARTS LIST ........................................................................................................................................... 103

- 3 - WARNINGS AND PRECAUTIONS FOR SAFETY Please observe the following safety precautions in order to use safely and correctly the refrigerator and to prevent accident and danger during repair. 1. Be care of an electric shock. Disconnect power cord from wall outlet and wait for more than three minutes before replacing PWB parts. Shut off the power whenever replacing and repairing electric components. 2. When connecting power cord, please wait for more than five minutes after power cord was disconnected from the wall outlet. 3. Please check if the power plug is pressed down by the refrigerator against the wall. If the power plug was damaged, it may cause fire or electric shock. 4. If the wall outlet is over loaded, it may cause fire. Please use its own individual electrical outlet for the refrigerator. 5. Please make sure the outlet is properly earthed, particularly in wet or damp area. 6. Use standard electrical components when replacing them. 7. Make sure the hook is correctly engaged. Remove dust and foreign materials from the housing and connecting parts. 8. Do not fray, damage, machine, heavily bend, pull out, or twist the power cord. 9. Please check the evidence of moisture intrusion in the electrical components. Replace the parts or mask it with insulation tapes if moisture intrusion was confirmed. 10. Do not touch the icemaker with hands or tools to confirm the operation of geared motor. 11. Do not let the customers repair, disassemble, and reconstruct the refrigerator for themselves. It may cause accident, electric shock, or fire. 12. Do not store flammable materials such as ether, benzene, alcohol, chemicals, gas, or medicine in the refrigerator. 13. Do not put flower vase, cup, cosmetics, chemicals, etc., or container with full of water on the top of the refrigerator. 14. Do not put glass bottles with full of water into the freezer. The contents shall freeze and break the glass bottles. 15. When you scrap the refrigerator, please disconnect the door gasket first and scrap it where children are not accessible.

- 4 - SPECIFICATIONS 1. Ref No. : GR-P227/L227 ITEMS DIMENSIONS (mm) NET WEIGHT (kg) COOLING SYSTEM TEMPERATURE CONTROL DEFROSTING SYSTEM INSULATION COMPRESSOR EVAPORATOR CONDENSER REFRIGERANT LUBRICATING OIL DRIER CAPILLARY TUBE 898(W)X761(D)X1758(H) 162/159 Fan Cooling Micom Control Full Automatic Heater Defrost Cyclo-Pentane P.T.C. Starting Type Fin Tube Type Wire Condenser R134a (180g) FREOL@10G (310 cc) ID 0.83 MOLECULAR SIEVE XH-7 SPECIFICATIONS ITEMS FIRST DEFROST DEFROST CYCLE DEFROSTING DEVICE ANTI SWEAT HEATER ANTI-FREEZING HEATER FREEZER LAMP REFRIGERATOR LAMP 4 - 5 Hours 13 - 15 Hours Heater, Sheath Dispenser Duct Door Heater Dispenser Heater Home Bar Heater Damper Heater 40W (1 EA) 40W (1 EA) or 30W (1 EA) SPECIFICATIONS <Front View> <Plane View>

- 5 - PARTS IDENTIFICATION 1. Ref No. : GR-P227/L227(INTERNAL FILTER), GR-P257/L257 Dispenser Cover Assembly Ice & Water Dispenser Button Cover PWB Water Tube Home Bar L227 : Non Home bar Automatic Icemaker Shelf or Drawer Lamp Shelf or Drawer Milk product corner Can Server (Optional) Refreshment center (Optional) Shelf Shelf (Folding or Normal) Egg Box Miracle Zone (Optional) Fresh compartment (Optional) Conversion switch (Meats/Vegetables) (Optional) Wine holder (Plastic or wire) Door Rack Snack drawer (Optional) Humidity switch Vegetable Drawer (1 or 2) Door Rack Door rack Drawer (2 or 3) Door rack Lower cover Freezer Compartment Refrigerator Compartment Shelf Lamp

- 6 - PARTS IDENTIFICATION 2. Ref No. : GR-P227/L227(EXTERNAL FILTER), GR-P257/L257 Dispenser Cover Assembly Ice & Water Dispenser Button Home Bar L227 : Non Home bar Cover PWB Automatic Icemaker Shelf Lamp Shelf Door rack Drawer (2 or 3) Door rack Lower cover Milk product corner Can Server (Optional) Refreshment center (Optional) Shelf Shelf (Folding or Normal) Egg Box Miracle Zone (Optional) Fresh compartment (Optional) Conversion switch (Meats/Vegetables) (Optional) Wine holder (Plastic or wire) Door Rack Snack drawer (Optional) Humidity switch Vegetable Drawer (1 or 2) Door Rack Shelf Lamp Freezer Compartment Refrigerator Compartment

- 7 - HOW TO INSTALL REFRIGERATOR 1. How to Adjust Door Height of Refrigerator Make the refrigerator level first. (If the refrigerator is not installed on the flat floor, the height of freezer and refrigerator door may not be the same.) 1. If the height of freezer door is lower than that of refrigerator compartment : Insert a driver into the groove of adjusting screw and rotate driver in arrow direction (clockwise) until the refrigerator becomes horizontal. Insert a driver into the groove of adjusting screw and rotate driver in arrow direction (clockwise) until the refrigerator becomes horizontal. 2. If the height of freezer door is higher than that of refrigerator compartment : Height difference Height difference Height difference Left helght adjustment screw Right helght adjustment screw Height difference Adjusting Driver Driver Adjusting

- 8 - HOW TO INSTALL REFRIGERATOR 2. How to Install Water Pipe Before Installation Please confirm the following installation parts. 1. The icemaker requires the water pressure of 1.5 - 8.5kgf/cm 2 . (It is acceptable if city water fills a cup of 180cc with water for 3 seconds) 2. Install booster pump where the city water pressure is below 1.5kgf/cm 2 for normal operation of water and ice dispenser. 3. The total length of water pipe shall be less than 12m. Do not bend the pipe at right angle. If the length is more than 12m, there will be troubles on water supply due to water pressure drop. 4. Please install water pipe where there is no heat around. 2-1. When connecting directly to the water tap. Valve Feed Connector, Pipe Tape, Teflon Rubber, Packing Connector, Pipe Class. Conve- rtible Water Valve Water Conn- ector Valve Feed Connector, (MECH) Pipe Conversion Connector(3/4") Balance Conector(3/4") Packing( 24x3t) 4932JA3003B Conversion Connector(W25) Balance Conectoor(W25) Packing( 23x3t) Connector, (MECH) Pipe Conversion Connector(W28) Balance Conector(W28) Packing( 26x3t) Connector, (MECH) Pipe Conversion Connector(1/2") Balance Conector(1/2") Packing( 19x3t) 5221JA3001A 4932JA3003A 6631JA3004A 6631JA3004B 3920JA3001B 6631JA3004C 6631JA3004D 3920JA3001A 4932JA3003C 6631JA3004E 6631JA3004F 3920JA3001C 4932JA3003D 6631JA3004G 6631JA3004H 3920JA3001D Common Use No Holes No Holes No Holes No Holes Shape and Spec. Connector, (MECH) Pipe Nomenclature P/No Remarks

- 9 - HOW TO INSTALL REFRIGERATOR 1. Connection of Pipe Connector A and B. Caution : Feed pipe should be connected to cold water line. If it is connected to hot water line, trouble may occur. Please check rubber packing when connecting feed pipe. 1) Turn off main valve of water pipe. 2) Disconnect water tap from piping by loosening nuts. 3) Connect pipe connector A and B to piping after sealing the pipe connector with sealing tapes. 4) Connect feed valve to pipe connector A. 5) If there is only one tap water pipe, connect pipe connector A only and install feed pipe. Pipe Connector B Hot Water Cold Water Pipe Connector A Feed Valve Feed Valve Feed Valve Feed Valve Feed Valve How to wind Sealing Tapes. Single Lever Type Faucet (general) General Type Single Lever Type Faucet (one hole, tech type and hand spray) Two Hands Type Faucet 2. Water Supply 1) After the installation of feed water, plug the refrigerator to the earthered wall outlet, press the water dispenser button for 2 - 3 minutes, and confirm that the water comes out. 2) Check leakage at connecting part, then arrange water tube and locate the refrigerator at its regular place if there is no leaking. Water Tube Nut Water Tube

- 10 - HOW TO INSTALL REFRIGERATOR 3. When customer uses bottled water. Caution : If feed tube is more than 4m, less water will come out due to pressure drops. Use standard feed tube to prevent leaking. 1. The pump system should not be on the floor (it may cause noise and vibration). Securely fasten the inlet and outlet nuts of pump. 2. If there is any leakage after installation, cut the water tube at right angle and reassemble. 3. When put the water tube end into the bottle, leave a clearance between bottle bottom and water tube end. 4 Check water coming out and any leakage. * If customer wants to use bottled water, extra pump should be installed as shown below. Outternal Filter 1. Filter Fixation 1) Connect feed tube to the filter outlet and water valve connecting tube. 2) Fix the filter at proper place around the sink where it is easy to replace the filter and to receive the cleaning water. Please consider the length of tube shall be less than 8m when locating filter. 2. Filter Cleaning 1) Connect feed tube to the inlet of feed valve and filter. 2) Clean the main valve and feed valve with water for at least one minute until clean water comes out. Water Tube Feed Valve Water Outlet Inlet Connector Type Clip Filter Filter Inlet Cold Water Hot Water

LG GR P227 P257 L227 L257 C227 C257 B227 B257Service Manual

You're Reading a Preview

Recently Viewed