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Manual LG Electronics GR-S592

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  • LG Electronics GR-S592 - page 1

    CAUTION BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL. MODEL: GR-S552 / GR-S592 REFRIGERATOR SERVICE MANUAL http://biz.lgservice.com ...

  • LG Electronics GR-S592 - page 2

    CONTENTS ............................................................................................................................................................................. 2 SERVICING PRECAUTIONS................................................................................................................................................ ...

  • LG Electronics GR-S592 - page 3

    - 3 - Air Recharging in Compressor T est the refrigeration by connecting it electrically before refilling operation. It is necessary to ascertain the function of the motor-compressor and identify the defects immediately . If the defects have been found, empty the old system of eventual R-134a residue by breaking off the end of the extension piece a ...

  • LG Electronics GR-S592 - page 4

    - 4 - ITEMS SPECIFICA TIONS FREEZER 1 14 NET CAP ACITY REFRIGERA TOR 306 TOT AL 420 DIMENSIONS (mm) 755(W) X 689(D) X 1777(H) NET WEIGHT (kg) 79 COOLING SYSTEM Fan Cooling TEMPERA TURE CONTROL Micom Control Full Automatic DEFROSTING SYSTEM Heater Defrost OUT CASE Pre Coated Metal INNER CASE A B S INSULA TION Polyurethane Foam ( l ) ITEMS SPECIFICA ...

  • LG Electronics GR-S592 - page 5

    - 5 - 2-1 FEA TURE CHART NOTE : This is a basic model. The shape of refrigerator is subject to change. 2. P ARTS IDENTIFICA TION Egg Storage Rack Freezer Door Rack Freezer Temperature Control Dial Leveling Screw Vegetable Drawer Used to keep fruits and vegetables, etc. fresh and crisp. Shelves Lamp Fresh Meat Base Cover FREEZER COMPARTMENT Lamp She ...

  • LG Electronics GR-S592 - page 6

    - 6 - 3-1 DOOR ● Freezer Door 1. Remove the hinge cover by pulling it upwards. 2. Loosen hexagonal bolts fixing the upper hinge to the body and lift the freezer door . 3. Pull out the door gasket to remove from the door foam Ass'y . ● Refrigerator Door 1. Loosen hexagonal bolts fixing the lower hinge to the body to remove the refrigerator ...

  • LG Electronics GR-S592 - page 7

    - 7 - 3-4 DEF' CONTROL ASSY Def control ASM consists of Defrost Sensor and FUSE–M. Defrost Sensor functions to defrost automatically and it is attached to the Evaporator and the metal side of the case senses T emp. Fuse-M is a kind of safety device for preventing over- heating of the Heater when defrosting. At the temperature of 77°C, it st ...

  • LG Electronics GR-S592 - page 8

    - 8 - 4-1 COMPRESSOR 4-1-1 Role The compressor inhales low temperature and low pressure gas evaporated from Evaporator of the Refrigerator , and condenses this gas to high temperature and high pressure gas, and then plays delivering role to Condenser . 4-1-2 Composition The Compressor is Composed of Compressor Apparatus compressing gas, Compressor ...

  • LG Electronics GR-S592 - page 9

    - 9 - 4-3 OLP (OVER LOAD PROTECTOR) 4-3-1 Definition of OLP (1) OLP (OVER LOAD PROTECTOR) is attached to Hermetic Compressor and protects Motor by cutting off current in Compressor Motor by Bimetal in the OLP in case of over-rising temperature. (2) When over-voltage flows to Compressor motor , Bimetal works by heating the heater inside OLP , and OL ...

  • LG Electronics GR-S592 - page 10

    - 10 - 6-1 COMPRESSOR AND ELECTRIC COMPONENTS 6. TROUBLESHOOTING 1 2 3 4 5 2 5 5 3 5 4 5 5 1 4 3 YES YES YES YES NO NO YES YES YES NO NO NO Power Source. Remove the PTC-Starter from the Compressor and measure the voltage between T erminal C of Compressor and T erminals 5 or 6 of PTC. No V oltage. (Rating V oltage ± 10%)? Replace OLP . Reconnect. R ...

  • LG Electronics GR-S592 - page 11

    - 11 - 6-2 PTC AND OLP 6 5 3 4 YES NO Normal operation of Compressor is impossible or poor . Separate the PTC from Compressor and measure the resistance between No. 5 and 6 (only RSIR T ype) or No. 4 and 5 of PTC with a T ester or Whistone Bridge. (Figure 22) Separate the OLP from Compressor and check resistance value between two terminals of OLP w ...

  • LG Electronics GR-S592 - page 12

    - 12 - 6-3 ANOTHER ELECTRIC COMPONENTS ▼ Cooling is impossible Compressor doesn't run. Running state of Compressor is poor . Check a starting voltage. Check if current flows to the following components. a. Thermistor b. Starting devices c. OLP d. Compressor coil e. Circuit Parts Low voltage. Poor contacting. Shorted or broken. Poor contactin ...

  • LG Electronics GR-S592 - page 13

    - 13 - COMPLAINT POINTS TO BE CHECKED REMEDY Cooling is • Is the power cord unplugged from the outlet? • Plug to the outlet. impossible. • Check if the power S/W is set to OFF . • Set the switch to ON. • Check if the fuse of power S/W is shorted. • Replace a regular fuse. • Measure the voltage of power outlet. • If voltage is low , ...

  • LG Electronics GR-S592 - page 14

    - 14 - 6-5 REFRIGERA TING CYCLE ▼ T roubleshooting Chart ▼ Leakage Detection Observe discharging point of refrigerant which may be in oil discharging part in compressor and hole of evaporator . YES YES Whether Compressor runs or not. Whether frost forms or not in Evaporator . Observe the discharging amount of Refrigerant. Inject Refrigerant to ...

  • LG Electronics GR-S592 - page 15

    - 15 - NO. ITEMS CONTENTS AND SPECIFICA TIONS REMARKS WELDING (1) H 30 ROD (1) • Chemical Ingredients • Recommend H34 containing 34% Ag in the (1) • Ag: 30%, Cu: 27%, Zn: 23%, Cd: 20% • Service Center . (1) • Brazing T emperature: 710~840°C (2) Bcup-2 (1) • Chemical Ingredients (1) • Cu: About 93% (1) • P: 6.8~7.5% (1) • The rest ...

  • LG Electronics GR-S592 - page 16

    The following description is basically for GR-S552/GR-S592. For the other models, refer to the diagram of the entire PCB 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 is set to ‘Medium’ → ‘Medium/High’ → ‘High’ → ‘Low’ → ‘Medium/Low? ...

  • LG Electronics GR-S592 - page 17

    7-1-4 DEFROSTING 1. The defrosting is performed each time when the total running time of the compressor reaches 7 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. 3. When the temperature of the defrosting sensor reaches 10 °C or above, t ...

  • LG Electronics GR-S592 - page 18

    7-1-6 ERROR DIAGNOSTIC MODE 1. The error diagnostic mode allows the SVC when a fault that may affect the performance of the product occurs while operating the product. 2. Even if the function control button is pushed when an error occurs, the function will not be performed. 3. When the error is cleared while the error code is displayed due to a fau ...

  • LG Electronics GR-S592 - page 19

    7-2 PCB FUNCTION 7-2-1 POWER CIRCUIT The secondary part of the TRANS is composed of the power supply for the display and relay drive (12Vdc) and that for the MICOM and IC (5Vdc). The voltage for each part is as follows. V A1 is a part for preventing the over voltage and noise. When 385V or higher power is applied, the inside elements are short-circ ...

  • LG Electronics GR-S592 - page 20

    7-2-2 OSCILLA TION CIRCUIT This circuit is to generate the base clock for calculating time and the synchro clock for transmitting data from and to the inside logic elements of the IC1(MICOM). Be sure to use the authentic parts since the calculating time by the IC1 may be changed or it will not work if the OSC1 SPEC is changed. 7-2-3 RESET CIRCUIT T ...

  • LG Electronics GR-S592 - page 21

    7-2-4 LOAD DRIVE CIRCUIT 1. Load Drive Condition Check - 21 - Load T ype Measurement Location (IC5) No. 16 No. 13 No. 15 No. 14 No. 12 ON 1V or below Condition OFF 12V Comp Defrosting Heater Freezer Fan Motor High RPM Fan Motor (R-Fan) Standard RPM Double Cooling ...

  • LG Electronics GR-S592 - page 22

    7-2-5 TEMPERA TURE SENSOR CIRCUIT The upper CIRCUIT reads REFRIGERA TOR temperature and DEF-SENSOR temperature for defrosting into MICOM. OPENING or SHORT state of each TEMPERA TURE SENSOR are as follows. 7-2-6 DOOR OPEN DETECTION CIRCUIT - 22 - SENSOR CHECK POINT NORMAL(-30 °C ~ 50 °C) SHORT -CIRCUITED OPEN Refrigerator Sensor POINT V oltage 0.5 ...

  • LG Electronics GR-S592 - page 23

    - 23 - 7-2-7 TEMPERA TURE COMPENSA TION & OVERCOOLING/UNDERCOOLING COMPENSA TION CIRCUIT 1. Refrigerator T emperature Compensation ➧ T able of T emperature Compensation by adjusting the resistance (Difference with the current temperature) E.g.) If the refrigerator compensation resistance (RCR1) is changed from 10K (the current resistance) to ...

  • LG Electronics GR-S592 - page 24

    7-2-8 KEY BUTTON INPUT & DISPLA Y LIGHT ON CIRCUIT ➧ 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. The drive type is the scan type. - 24 - ...

  • LG Electronics GR-S592 - page 25

    - 25 - 7-3 RESIST ANCE SPECIFICA TION OF SENSOR • The resistance of SENSOR has ± 5% common difference. • Measure the resistance of SENSOR after leaving it over 3 minutes in measuring temperature. This postponing is necessary because of perceiving speed. • Measure the F-SENSOR, SUPER FROST SENSOR, R1, R2-SENSOR after disconnect CON5 of PWB AS ...

  • LG Electronics GR-S592 - page 26

    - 26 - 7-4 TROUBLE SHOOTING • Replace PCB when no trouble after checking the contents of trouble. CLASSIFICATION STATE OF TROUBLE POINT BE CHECKED CHECKING METHOD CONTENT REMEDY POWER SOURCE 1. All the DISPLAY 1. FREEZER/ FREEZER/REFRIGERATOR POWER SOURCE is poor Certify Fuse. is poor LED OFF REFRIGERATOR DOOR OPEN Certify outlet Voltage. 2. DISP ...

  • LG Electronics GR-S592 - page 27

    - 27 - CLASSIFICATION STATE OF TROUBLE POINT BE CHECKED CHECKING METHOD CONTENT REMEDY COOLING is poor. REFRIGERATOR 1. FREEZER TEMPERATURE See "FREEZER Certify the attaching state TEMPERATURE is is normal? TEMPERATURE is poor". of DOOR. poor. 2. Cool air of FAN MOTOR is Certify the amount of cool air FAN MOTOR is poor. Replace FAN MOTOR. ...

  • LG Electronics GR-S592 - page 28

    7-5 MAIN PWB ASS'Y AND P ARTS LIST 7-5-1 MAIN PWB ASS'Y - 28 - 1. R-B52DZ/R-B55DZ ...

  • LG Electronics GR-S592 - page 29

    7-5-2 REPLACEMENT P ARTS LIST - 29 - ...

  • LG Electronics GR-S592 - page 30

    7-5-3 PWB ASS'Y , DISPLA Y AND P ARTS LIST - 30 - ...

  • LG Electronics GR-S592 - page 31

    7-6 PWB DIAGRAM - 31 - ...

  • LG Electronics GR-S592 - page 32

    - 32 - ...

  • LG Electronics GR-S592 - page 33

    - 33 - 8. EXPLODED VIEW 104A 106A 310A 308A 314A 307A 309A 312A 328B 315A 281C 281B 281A 282A 282B 103C 318A 317A 304A 323B 328A 329C 420A 319A 105A 315B 327A 315C 319C 106A 283B 120A 158F 329D 409B 158C 410J 158A 158B 409A 401A 301A 418A 406B 103B 103A 410G * 410H * 501A 501F 411A 501K 324A 129A ▼ The parts of refrigerator and the shape of each ...

  • LG Electronics GR-S592 - page 34

    * : optional parts - 34 - 151A 151A 155K 154A 233B * 149C * 149C * 140A * 149A 241A 205A or 205A or 241D 241C 235A 205A 205A * 131A 405C 404A 405C 405A * 131C 233A 230A 203A 200A 201A * 136A * 136B * 136N * 136P * 136Q * 136R 241A 210A 210B 243A 243B 231A * 149B * 125A * 125A * 131A * 125A * 125H * 149A 234B * 149B * 212G 329A 212C 212A 244A 244C 3 ...

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