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Safety Precautions.
Read the following
inst
ructions
before servicing
your refrigerator.
1. Unplug the refrigerator
before
servicing.
2. Visually
inspect for gas leakage or
short circuit.
3. If testing with the refrigerator
plugged in, wear rubber gloves to
avoid electric shock.
,
,
Do not touch frozen metal parts;
your hands could freeze to the
surface. This may cause frostbite.
Be sure that no water is dripping
towards
electrical
or metal parts.
,
,
,
If you check the bottom part of the
refrigerator
while the freezer
door is open, be careful standing
up. You could bump your head.
When you tilt your refrigerator
be
sure to take out all metal, glass, or
other loose parts.
When servicing
the evaporator,
wear cotton gloves to prevent
cutting
by any of the evaporator
fins.
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Table of Contents
Related Manuals for LG GR-382R
Summary of Contents for LG GR-382R
- Page 1 Safety Precautions. Read the following inst ructions before servicing your refrigerator. If you check the bottom part of the 1. Unplug the refrigerator before refrigerator while the freezer servicing. door is open, be careful standing 2. Visually inspect for gas leakage or up.
- Page 2 Service Precautions 0(absolute or -1 atm, -760 mm Hg.) It Refrigerant Recharging is not recommend to run the vacuum pump for more than 30 minutes. See Test the compressor's operation before recharging the refrigerant; this is very important to detect failures and to ensure the proper motor running, and to identify failures immediately.
- Page 3 Service Precautions installed in one session, as it could keep refrigerant out of the system. block the compressor. Install 20-30 See Figure 5. grams at a time and close the valve. The compressor will run and the For gas charging, check the pressure will drop.
- Page 4 • MODEL NAME Specifications GR-382R LRTP-1231W 3apacityliters(cubic 99(3.5)/ 236(8.3)/ 99(3.5)/ 236(8.3)/ eet) (C/R/r) 334(11.8) 334(11.8) 26.5*65*27 in / 26.5*65*27 in / 675"1650"685 675"1650"685 Dimentions (W*H*D) Neight (pounds) Electronic Electronic remperatureControl 3ontrolType Refrigerator-Control Refrigerator-Control Horizontal Horizontal -landle Type General _eversible Door Features DoorFinishing _ower Cover...
- Page 5 Feature Chart FREEZER Temperature Freezer Door Baskets Twist'n Serve REFRIGERATOR Temperature Control_- Fresh Meat Tray... Lamp_ Shelves (Plastic or Glass) _" Deodorizer (Absorbs Refrigerator Odors)* Door Baskets Multi Air Flow _-.----- Air flow distributor Vegetable Tray Leveling (Keeps fruits and vegetables fresh) Magic Crisper (Vegetable Tray cover...
- Page 6 2. Circuit Dia,qram CIF_C 17 DIAORA ABSY, DISPLAY SENSOR SENSOR IYI'2I_NWI_HIWI_°IS (PCB) ASSEMBLY,MAIN POWER SUPPLY CORB NEUTRAL BL i[ _, pF p._¢ START 3854JLBOOlS BK:BLACK BN:BROWN RD:RED BO:BRIGHT ORANGE YL: YELLOW GN: GREEN BL: BLUE PR: PURPLE WH: WHITE SB: SKY BLUE GY: GREY PK: PINK MODEL(S):...
- Page 7 Graphic Circuit Diaqram F+ + ................... +i .................... Blue 1,+++ Sensor Delro_t Resislanee Blue ran >e (Heater Cord) _t)range Evaporator O,.+ro+t Re+m ..(Heater Plate) L..J _wm++ ..........IJ._-- S++ildl L-L..Y.._J].__,,_;..._.........., ++i+ Defrost Temperature Control Electronic Control i + _...
- Page 8 3. Product Disassemble. Doors 2. Disconnect all switche's cables. • Freezer Door See Figure 8 1. Remove hinge cover by pulling it upwards. 2. Loosen the hexagonal bolts that hold the upper hinge in place. See Figure 1. 3. Remove door. See Figure 2. Figure 7 Figure 8 Control...
- Page 9 Defrost Control Assembly 1. The defrost control assembly consists of one thermistor and a fuse that melts with heat. 2. The termistor's function is to sense the compartment's temperature and automatically stop the defrost. The termistor Figure 13 located beside of the evaporator bracket.
- Page 10 Figure 19 Refrigerator Control Box. Remove the lamp cover as mentioned before. 1. Loosen the screws. 2. Remove the entire control box. See Figure 20. 3. Disconnect the control box connector. See Figure 21. Figure 20 Figure 21...
- Page 11 4. Reversible Door PRECAUTION Before reversing the doors, remove all foods and accesories, like shelves or trays, which are not attached to the doors. 2. Use a Philips screwdriver, bolt driver, torque wrench, or spanner to tighten and loosen the bolt. 3.
- Page 12 5 Reverse thepositio_ o { theadjus_abme _ Assemble thelower h i_g÷ _z screw _ssemb{y _ 8M_ve the _p t_ th÷ opposite side _ad assemble the center hinge I ¸o Revel'se the pi_ i_sitiol_ of lhe up}_l" hlr_ge...
- Page 13 6. Troubleshooting 6-1 COMPRESSOR AND ELECTRIC COMPONENTS .-), Remove the PTC-Starter "_1 (Rating Voltage Power Source. from the Compressor 10%) and measure the voltage between Terminal C of Compressor Terminals 5 or 6 of PTC. Applied voltage is not I Consult a qualified the range of Rating electrician.
- Page 14 6-2 PTC AND OLP Separates the PT | 2o%%%_o72_ ue _0°Jo I I Chec. the o ther I from Compressor measure the 115V/6OHz: 6.8 electric components. resistance between 240vJsoHz: 33 30% No. 5 and 6 (only RSIR Type) or No. 4 and 5 of PTC with a Tes ter or Wheatstone The Resistance value...
- Page 15 6-3 OTHER ELECTRIC COMPONENTS • No Cooling Compressor Ir_kl Check if current flows to __'_€ components. a. Starting Devices Shorted or Broken b. OLP • Poor contact or shorted. c. Compressor coil Coil Shorted. Rep,aceeach d. Circuit Parts ---_ Poor contact or shorted. Running state of Check starting Low Voltage...
- Page 16 6-4 SERVICE DIAGNOSIS CHART COMPLAINT POINTS TO BE CHECKED REMEDY Is the power cord unplugged? Plug it to the outlet. Check if the power switch is set to OFF. Set the switch to ON. Check if the fuse of power switch is No Cooling Replace a regular fuse.
- Page 17 6-5 REFRIGERATING CYCLE Troubleshooting Chart TEMPERATURE REFRIGERAT EVAPORATOR CAUSE REMARKS OF THE CONDITION CONDITION COMPRESSOR Freezer and A little higher than Low flowing sound of A little refrigerator ambient temperature, has leaked. Refrigerator don't refrigerator is heard PARTIAL and frost forms in inlet get cold normally.
- Page 18 7. MICOM Function & Circuit 7-1 FUNCTION 7-1-1 FUNCTION 1. When the appliance is plugged in, it is set to Medium. Each time the button is pushed, it cycles through Medium----_ Medium/High -->4--ligh .--->.Low ----_Medium/Low -_-_Medium. 2. When the power is initially applied or restored after a power failure it is automatically set to Medium.
- Page 19 7-1-2 DEFROSTING 1. The defrosting is performed each time when the total running time of the compressor reaches 10 hours. 2. After the power is turned on (or restored after a power failure), the defrosting starts when the total running time of the compressor reaches 4 hours.
- Page 20 7-1-4 ERROR DIAGNOSTIC MODE 1. The error diagnostic mode indicates when a fault may affect the performance the product occurs while operating the product. Even if a function control button is pushed when an error occurs, the function will not be performed. 3.
- Page 21 7-2 PCB FUNCTION 7-2-1 POWER CIRCUIT CONI ,°3 (VlCOM) _-ST The second part of the Transformer is composed of the power supply for the display and relay drive (12 Vdc) and for the MICOM and IC (5 Vdc). The voltage for each part is as follows: PART VA 1 VOLTAGE...
- Page 22 7-2-2 OSCILLATION CIRCUIT ×OUT (MICOM) ×IN This circuit is to generate the base clock for calculating time and the synchro clock for transmitting data to and from the inside logic elements of the IC1 (MICOM). sure to use the exact replacement parts since the calculating time by the IC1 may be changed...
- Page 23 7-2-4 LOAD DRIVE CIRCUIT 1. Load Drive Condition Check CON1__ PO_'R &- C_3MP _',_ C3198 - -- o2__-_21 _ __• (MICO_) G_z_I C{_129 AI06 COOLINC_M OTOR MELTING DEFROST C3198 FUSE HEATER _--_ Load Type Compressor, Freeze Fan Motor Defrosting Heater Measurement Location 1 V or below...
- Page 24 7-2-5 TEMPERATURE SENSOR CIRCUIT CON2 &l KF {A_ND) REFRIGERATOR*SENSOR (M[COM) _.v. (AINI) DEFROST*SENSOR The upper CIRCUIT reads REFRIGERATOR temperature and DEFROST- SENSOR temperature for defrosting into MICOM. OPENING or SHORT state of each TEMPERATURE SENSOR are as follows: SHORT- OPEN SENSOR CHECK POINT...
- Page 25 7-2-6 TEMPERATURE COMPENSATION & OVERCOOLING/UNDERCOOLING COMPENSATION CIRCUIT Refrigerator Temperature Compensation (MICOM) (A,._) ..RCR1 i Refrigerator Remark Temperature Resistance Compensation (RCR1) 180 K (+5.0) Compensation by raising the temperature 56 K 39.2 (+4.0) 33 K 37.4 (+3.0) 35.6 (+2.0) 33.8 (+1.0) Standard Temperature 8.2 K...
- Page 26 7.2.7 KEY BUTTON INPUT & DISPLAY LIGHT ON CIRCUIT CON2 I 06 IA10B _/CLZI', I q 5 IA106 (TCS!INT5 /rLzo) (MICOM) (scK) o1_8 L105 HAX_ r,_. D101 SWl01 =}The circuit shown above is to determine whether a function control key on the operation display is pushed and to turn on the corresponding function indication LED.
- Page 27 7-3. RESISTANCE SPECIFICATION OF SENSOR TEMPERATURE SENSOR RESISTANCE OF REFRIGERATOR (DEFROST) SENSOR 77 K 66 K 47.3 K 38.4 K 30 K 24.1 K 19.5 K 15.9 K 13 K 11 K 8.9 K 6.2 K 4.3 K The resistance of SENSOR HAS 5% common difference. Measure the resistance of SENSOR after leaving it over 3 minutes in measuring temperature.
- Page 28 7-4 MAIN PWB ASSEMBLY AND PARTS LIST. 7-4-1 MAIN PWB ASSEMBLY. • •...
- Page 29 7-4-2 REPLACEMENT PARTS LIST MAKER NO. DESCRIPTION SPEC' REMARK 6870JB2062 =WB,MAIN FR-1(DS-1107A) DO0 SAN t=1.6 6170JB2014 I: 127v,0:15v TAESUNG -FRANS TRANS PCB JAE EUN 6630JBSOO1W CON1 WAFER 6630JBSOO7J CON2 9177B8-1(10P) 7 DIZZJB2OO4E _ICO_ CHIP ICI(=OI_JB2OO4F TMP87C409N TOSHIBA 80IKE781200A KIA78S12P REOULATOR OIKE780500A KIA78SOSP 10 OIKE7042OOA...
- Page 30 7-4-2 REPLACEMENT PARTS LIST ORD39OOFBOg 390J 1/6W R7,8 0RD390_609 3gOJ 1/4W ORD2OOIF60D 1/6W ORD2001GBOD 1/'#W 2.7KJ 1/4w 0RD27016BOg R2,4 {ESISIOR,FIXED (2)K-OHM ORD4701F609CARBON F1LM 4.7KJ 1/6W (3)D_GHO 0RD4701 G809 4-_7K J 1/4-W (4}SUNGYO ORDIOO2F60D IOKJ I/6W lOKJ1/4w ORD10026509 ORD27026609 27KJ 1,/4W R3,5 ORD1803F609 180KJ...
- Page 31 7-4-3 PWB ASSEMBLY, DISPLAY AND PARTS LIST LI_IL,O2L_3 LI04 _nO Part No. Location Description Supplier part No. 6800JB8005 Switch KPT- 1105 a SW101 0DL300329AA SV50- L101--L105 R32BF569GG 1N4148 D101 0DD414B09AA Switching Diode 6500JB1001R Sensor JD1--JD2 43607015 Jump Wire 0.6*8 43607015 Jump Wire 0.6"10...
- Page 32 CLASSIFICATION STATE OF POINTS CHECKING CONTENT REMEDY TROUBLE CHECK METHOD "o ,-I FREEZER/REFRI POWER SOURCE is Certify Fuse. FREEZER/REFRIGE All the DISPLAY GERATOR. incorrect. Certify outlet voltage. LED OFF. RATOR door open. LAMP is dim. Is the voltage Use boosting DISPLAY LED Verify the correct bulb POWER SOURCE...
- Page 33 CLASSIFICATION STATE OF POINTS CHECKING CONTENT REMEDY TROUBLE CHECK METHOD See if FREEZER TEMPERATURE lis too Is FREEZER Be sure door cIoses. warm. REFRIGERATOR TEMPERATURE FAN MOTOR is poor. Replace FAN MOTOR. POOR COOLING TEMPERATURE is too normaI? AIR FLOW blocked. Remove Impurities.
- Page 34 7.5 PWB DIAGRAM CON1 REFRIGERATOR-LAMP FREEZER FAN/MOTOR AIOB COOLING FAN/MOTOR MELTING DEFROST- FUSE HEATER X_JT CIRCUIT DLa_GR#_M...
- Page 35 CON2 I AI08 /a_zo) 3g,D I_RB P€1 BlOl ,1KF REFRIGERATOR-SENSOR [_IN1) _-¢C7 DEFROST-SENSOR :lR14 (AIN_ r--_ 71g_11 rl _22"r 2512_'...
- Page 36 8 Exploded View The parts of refrigerator and the shape of each part may vary by market area. Capacitors and fuse are optional parts. Optional parts: <...
- Page 37 _205Ai i201A!_ 125A _ i212Ai...
- Page 38 9. Service parts list lift 3 GR-382R LRTPI231W LOC. Description Part Number Part Number 3650JJ2O03A 3650JJ2003A 103A "IAN DLE,BACK 3650JJ2O03E 3650JJ2003E 103B "IAN DLE,BACK 4981JA3O06A 4981JA3006A 104C .EG ASSEMBLY 5250JA2O09A 5250JA2009A 105A )RAIN,PIPE-Z 6871JB2036A 0871JB2036A 110A _WBIPCB) ASSY, DISPLAY 4974JJ1O03A 4974JJ1003A 1lOB CE TRAY GUIDE...
- Page 39 lift GR-382R LRTPI231W LOC. Description 4775JA3015C 4775JA3015C 281B JPPER HINGE ASSEMBLY 4775JA30098 4775JA3009B 282B CENTER HINGE ASSEMBLY 4775JA2020A 4775JA2020A 283B _OWER HINGE ASSEMBLY 5421JA2359S 5421JA2359B 301A EVAPORATOR ASSY 4826JJ2001A 4826JJ2001A 303A SPACER,INSULATION 4827JJ3001A 4827JJ3001A 303B SPACER ASSY 3551JJ2002A 3551JJ2002A 304A V1ECHANICAL AREA COVER 2521JA1006A 2521JA1006A...