Related Manuals for LG GC-B379S*QA
Summary of Contents for LG GC-B379S*QA
- Page 1 FREEZER FREEZER FRIDGE EXPRESS FRZ. ECO MODE DOOR ALARM CHILD LOCK 3SECS. Ref.No Ref.No GC-B379S*QA GC-B379S*CA GC-B409S*QA GC-B409S*CA REFRIGERATOR SERVICE MANUAL http://biz.lgservice.com MODEL/COLOR:...
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Page 2: Table Of Contents
Edited by Foxit Reader Copyright(C) by Foxit Software Company,2005-2008 For Evaluation Only. CONTENTS Contents SAFETY PRECAUTIONS ......................................3 SERVICING PRECAUTIONS ....................................... 4 SPECIFICATIONS .......................................... 5 PARTS IDENTIFICATION ......................................6 INSTRUCTIONS FOR REVERSING DOOR SWING ............................. 7-8 DISASSEMBLY ..........................................8 DOOR ............................................8 DOOR SWITCH .......................................... -
Page 3: Safety Precautions
SAFETY PRECAUTIONS Please read the following instructions before servicing your refrigerator. 1. Check the set for electric losses. 2. Unplug prior to servicing to prevent electric shock. 3. Whenever testing with power on, wear rubber gloves to prevent electric shock. 4. -
Page 4: Servicing Precautions
SERVICING PRECAUTIONS FEATURES OF REFRIGERANT (R600a) • Achromatic and odor less gas. • Flammable gas and the ignition (explosion) at 494°C. • Upper/lower explosion limit: 1.8%~8.4%/Vol. Features of the R600a refrigerator • Charging of 60% refrigerant compared with a R134a model •... -
Page 5: Specifications
SPECIFICATIONS 1. Ref. No: GC-B379/409S*CA 2. Ref. No: GC- B379/409S*QA ITEMS SPECIFICATIONS ITEMS SPECIFICATIONS 595(W)X643(D)X1737(H) 595(W)X643(D)X1737(H) DIMENSIONS (mm) DIMENSIONS (mm) 595(W)X643(D)X1907(H) 595(W)X643(D)X1907(H) NET WEIGHT (kg) 69/75 NET WEIGHT (kg) 69/75 COOLING SYSTEM Fan Cooling COOLING SYSTEM Fan Cooling TEMPERATURE CONTROL Micom Control TEMPERATURE CONTROL Micom Control... -
Page 6: Parts Identification
PARTS IDENTIFICATION Models: GC**379S*QA GC**379S*CA GC**409S*QA GC**409S*CA Dairy Corner (Special models) Dairy Corner Display (optional) (optional) Removable Glass Shelf Egg Tray Cover LED Multi-air Flow Duct Basket Door Glass Rem Shelf Vitamin Plus System Guide Bottle (optional) (Special models) Basket Door Vegetable Drawer Guide (optional) -
Page 7: Instructions For Reversing Door Swing
INSTRUCTIONS FOR REVERSING DOOR SWING This refrigerator allows the owner to change the door swing if desired. The hinging of the doors can be changed to the opposite side anytime you wish. A Warning Electric Shock Hazard Disconnect electrical supply to refrigerator before installing. -
Page 8: Disassembly
INSTRUCTIONS FOR REVERSING DOOR SWING DISASSEMBLY 8. Install the refrigerator door (A) through matching holes in the lower of the door and pin of the middle hinge (16). Then install the upper hinge (28), supplied with refrigerator by placing in the appropriated hole of the refrigerator door (A). -
Page 9: Refrigerator Room Lamp
DISASSEMBLY 5. DEFROST CONTROL ASSEMBLY 3. REFRIGERATOR ROOM LED LAMP Defrost Control Assembly consists of Thermistor and Fuse, 1. Unplug the power cord from the outlet. Melting. Thermistor functions to defrost automatically and it 2. Assemble in reverse order of disassembly. Replacement must be is attached to metal side of the Evaporator and senses the same specification as original. -
Page 10: Display Remove
DISASSEMBLY ADJUSTMENT 1. COMPRESSOR 7. DISPLAY REMOVE 1. Role 1. Insert the blade of a knife in the middle bottom of the The compressor intakes low temperature and low pressure gas screen carefully. evaporated from Evaporator of the Refrigerator, and condenses this 2. -
Page 11: Note To Use Ptc-Starter
ADJUSTMENT 3. Note to Use PTC-Starter OVERLOAD (1) Be careful not to allow over-voltage and over-current. PROTECTOR(O.L.P) (2) No Strike Don't apply a forcible power or strike. (3) Keep apart from any liquid. If liquid such as oil or water away enter the PTC, PTC materials it COMPRESSOR may break due to insulation breakdown of the material itself. -
Page 12: Circuit Diagram
CIRCUIT DIAGRAM P.No.: MEZ62581565... -
Page 13: Troubleshooting
TROUBLESHOOTING (Mechanical Part) 1. COMPRESSOR AND ELECTRIC COMPONENT Power Remove the Relay (Rating Voltage Source. Assembly from the ±10%)? Compressor and measure the voltage between Terminal C of Compressor and Terminals M or S of Relay Assembly No Voltage. Applied voltage isn't in Advise the customer the range of Rating to use a regular... -
Page 14: Relay Assembly Ptc And Olp
TROUBLESHOOTING (Mechanical Part) 2. Relay assembly PTC AND OLP Check another Normal operation of Separate the PTC Observation value is electric components. Compressor is from Compressor and 220-240V/50Hz: impossible or poor. measure the ±20%Ohm resistance between No. 5 and 6 or No. 4 and 5 of PTC with a Tester or Whistone The resistance value is... -
Page 15: Another Electric Component
TROUBLESHOOTING (Mechanical Part) 3. ANOTHER ELECTRIC COMPONENTS Cooling is impossible Check if current flows to Compressor Cause. the following doesn't run. components. a. Thermistor Poor contacting. b. Starting devices Shorted or broken. or shorted. d. Compressor coil Coil shorted. Replace each e. -
Page 16: Service Diagnosis Chart
TROUBLESHOOTING (Mechanical Part) 4. SERVICE DIAGNOSIS CHART COMPLAINT POINTS TO BE CHECKED REMEDY • Check if the set is placed close to wall. • Place the set with the space of • Check if the set is placed close to stove, gas about 10cm. -
Page 17: Refrigerating Cycle
TROUBLESHOOTING (Mechanical Part) TROUBLESHOOTING (Mechanical Part) TROUBLESHOOTING (Mechanical Part) TROUBLESHOOTING (Mechanical Part) TROUBLESHOOTING (Mechanical Part) 5. REFRIGERATING CYCLE Troubleshooting Chart TEMPERATURE OF STATE OF REMARKS CAUSE STATE OF THE SET THE COMPRESSOR THE EVAPORATOR Freezer room and Low flowing sound of •... -
Page 18: Refrigerating Cycle
TROUBLESHOOTING (Mechanical Part) General Control of Refrigerating Cycle ITEMS CONTENTS AND SPECIFICATIONS REMARKS (1)H30 • Chemical Ingredients Ag: 30%, Cu: 27%, Zn: 23%, Cd: 20% • Brazing Temperature: 710~840°C • Recommend H34 containing WELDING ROD (2) Bcup-2 34% Ag in the Service Center. •... - Page 19 TROUBLESHOOTING (Mechanical Part) LOKRING TUBE JOINT LOKRING Figure 23. LOKRING ASSEMBLY JAWS BOLT TOOL Figure 24. LOKRING TOOL...
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Page 20: Micom Function & Pcb Circuit Explanation
Edited by Foxit Reader Copyright(C) by Foxit Software Company,2005-2008 For Evaluation Only. MICOM FUNCTION & PCB CIRCUIT EXPLANATION GC-B379S*QA GC-B409S*QA Temperature control in Temperature control in freezing compartment refrigeration compartment Quick freeze/ LED display lock button Economy mode Loose-fitting door alarm... -
Page 21: Micom Function & Pcb Circuit Explanation
• The initial temperature of the fridge and freezer compartments is -20°C and 3°C respectively. You can now adjust the temperature of the compartments as you want. GC-B379S*QA / GC-B409S*QA GC-B379S*CA / GC-B409S*CA Freezer, refrigerator NOTCH and temperature setup display part •... - Page 22 MICOM FUNCTION & PCB CIRCUIT EXPLANATION Eco Friendly function Express Freezing function You can use this function for quick freezing. This function is used This function tunes on the power saving mode which is useful when when you want to freeze the food quickly. you are away for holiday.
- Page 23 Continue normal mode DISPLAY operation of LOCK function • before the first power on the lock has to be unfasten. Figure.1. GC-B379S*QA • at locking time the Lock button indication flashes 3 times. GC-B409S*QA (except Bar LED) after 3 seconds the lock icon (b) becomes fasten.
- Page 24 (3) When the defect CODE removes the sign, it returns to normal operation (RESET). (4) The defect CODE shows on the Refrigerator and Freezer Display. (PIC.2,3) GC-B379S*QA/GC-B409S*QA 5. DOOR OPEN ALARM (1) Buzzer shall give warnings if freezer, refrigerator, or home bar door is open for more than one minute.
- Page 25 7 minute COMP FREEZER FAN Reset to normal operation in 1/2 second from TEST MODE Figure 1 Designation and confirmation of different failure (GC-B379S*QA/GC-B409S*QA) ERORR CODE REMARKS Item Details of the failure Freezer and Refigerator temperature setting Setup temperature...
- Page 26 MICOM FUNCTION & PCB CIRCUIT EXPLANATION Show ERROR CODE on display panel (For models GC-B379S*CA/GC-B409S*CA). -15 · -20 · -23 °C 6 · 3 · 0 °C Internal display 5 · -4 · -9 °F 43 · 37 · 32 °F EXPRESS FRZ.
- Page 27 MICOM(Return to normal mode). TEST1 TEST2 MODE MODE Attention • If Short made in TEST terminal, the TEST 1 condition will maintain. GC-B379S*QA/GC-B409S*QA TEST1 MODE -15 · -20 · -23 °C 6 · 3 · 0 °C FREEZER ECO FRIENDLY EXPRESS FRZ.
- Page 28 MICOM FUNCTION & PCB CIRCUIT EXPLANATION TEST mode function If Short made in TEST terminal, the TEST 1 condition will maintain. Internal display Test 2 Mode FUNCTION DESCRIPTION 1. Power Circuits PARTS VOLTAGE 230Vac 12Vdc 5Vdc TRANS secondary side is composed of electric power circuits for RELAY driving electricity (12Vdc) and for supplying electricity to MICOM and IC (5Vdc).
- Page 29 MICOM FUNCTION & PCB CIRCUIT EXPLANATION 2. OSCILLATION CIRCUIT CIRCUIT for occurring CLOCK which motivates the internal local element of IC1 to transmit and receive an information and BASIC TIME for calculating time. Use a proper form for OSC 1. Because in case that SPECIFICATION is changed, the calculated time in IC1 is changed or IC1 isn't able to operate.
- Page 30 MICOM FUNCTION & PCB CIRCUIT EXPLANATION 4. LOAD/BUZZER OPERATION. (1) LOAD OPERATION CHECK (2) BUZZER OPERATION CHECK...
- Page 31 MICOM FUNCTION & PCB CIRCUIT EXPLANATION 5. TEMP SENSOR CIRCUITS, DOOR OPENING SENSING The above circuit reads surrounding temperature, FREEZER temperature, REFFIGERATOR temperature into MICOM( IC1). OPEN or SHORT state of each SENSOR is as follows NORMAL SENSOR CHECK POINT SHORT OPEN (-30°C~50°C)
- Page 32 Edited by Foxit Reader Copyright(C) by Foxit Software Company,2005-2008 For Evaluation Only. MICOM FUNCTION & PCB CIRCUIT EXPLANATION SWITCH INPUT CIRCUIT The following circuit is a test switch input circuit for checking the refrigerator. TEMPERATURE COMPENSATION 25 P65...
- Page 33 Edited by Foxit Reader Copyright(C) by Foxit Software Company,2005-2008 For Evaluation Only. MICOM FUNCTION & PCB CIRCUIT EXPLANATION Inner MICOM DISPLAY GC-B379S*CA/GC-B409S*CA GC-B379S*QA/GC-B409S*QA...
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Page 34: Exploded View
EXPLODED VIEW & REPLACEMENT PARTS LIST GC-B379S*CA/GC-B409S*CA 230A 501F 281H 103B 407B 281F 501A 281E 103A 231A 281B 281A 102B 102A 239A 402A 503A 233A 102C 610E 282B 210A 109A 230B 610E 281D 304A 128C 128D 283B 201A 203A 210B 108A 108A... - Page 35 EXPLODED VIEW & REPLACEMENT PARTS LIST GC-B379S*CA/GC-B409S*CA/GC-B379S*QA/GC-B409S*QA 120A 120E 120B 401B 604F 120D 317A 318A 310A 307A 316B 314A 303D 420A 308A 309A 312A 411A 105A 405F 404A 401A 104A 405C 405A 104C 301A 329A 323B 106B 329C 319B 332A...
- Page 36 EXPLODED VIEW & REPLACEMENT PARTS LIST GC-B379S*CA/GC-B409S*CA/GC-B379S*QA/GC-B409S*QA 136E 241A 103E 154B 235A 155A 154D 241C 154G 151B 125A 136A 136B 136C 136D...
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Page 37: Appendix For Refrigerators Service Maintenance Manual
- solder again the area of leak by gas torch or cut this area by pipe cutter, expand pipe and solder it in the place cutting off earlier; - change filter to LG brand filter for refrigerant R134a or R600a (depends on refrigerant used by compressor);...