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LG LRSPC2301BS User Manual
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LG LRSPC2301BS User Manual

LG LRSPC2301BS User Manual

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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.
g.
Do not fray, damage, machine, heavily bend, pull out,
or twist the power cord.
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.
-3-

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Summary of Contents for LG LRSPC2301BS

  • Page 1 WARNINGS AND PRECAUTIONS FOR SAFETY Please observe the following safety precautions in order to Do not fray, damage, machine, heavily bend, pull out, use safely and correctly the refrigerator and to prevent or twist the power cord. accident and danger during repair. Please check the evidence of moisture intrusion in the 1.
  • Page 2 PARTS IDENTIFICATION 3. Ref No. : GR-L247ER, GR-L207ER Cover Hinge Cover PWB Frame Display Dispenser Lamp Dispenser Button Freezer Refrigerator Compartment Compartment Milk product corner Door rack Shelf Door rack ice maker (optional) drawer Shelf (Steel, TIGlass) Shelf Drawer or Shelf (optional) rack drawer/Meat...
  • Page 3 HOW TO INSTALL REFRIGERATOR 1. How to Adjust Door Height of Refrigerator • Make the refrigerator levelfirst. (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 2.
  • Page 4 HOW TO INSTALL REFRIGERATOR 2-1. When connecting directly to the water tap. Pipe 2. How to Install Water • 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.
  • Page 5 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 1) Turn off main valve of water pipe. may occur, 2) Disconnect water tap from piping by loosening nuts, •...
  • Page 6 HOW TO INSTALL REFRIGERATOR 3. When customer uses bottled water. *If customer wants to use bottled water, extra pump should be installed as shown below. 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.
  • Page 7 HOW TO INSTALL REFRIGERATOR • Install Water Filter (Applicable to some models only) • Before Installing water filter Control box 1. Before installing the filter, take out the top shelf of the refrigerator after tilting it to the direction (Q) and lifting it to the direction (@) and move it to the lower part, 2.
  • Page 8 HOW TO INSTALL REFRIGERATOR 3. How to Control the Amount of Water Supplied to lcemaker. 3-1. Confirm the amount of water supplied to the icemaker. 1, Pull out the ice bank in the upper part of the freezer compartment. Caution : •...
  • Page 9 HOW TO INSTALL REFRIGERATOR 3-2. Control the amount of water supplied to the Caution : When adjusting the amount of water supplied, adjust step by step. Otherwise the water may icemaker. spill over. Caution : • Please unplug the power cord from the wall outlet and wait for more than three minutes before disconnecting PWB cover as 310V is...
  • Page 10 MICOM FUNCTION 1. Monitor Panel 1-1. GR-P247, GR-P207, GR-L247, GR-L207 1-2. GR-C247, GR-C207, GR-B247, GR-B207 Function Monitor 5 Max ®® ®.. Freezer compartment Refrigerator compartment Dispenser selection button temperature control Button temperature control Button 2. Description of Function 2-1. Funnction of Temperature Selection Division Power Initially On 1st Press...
  • Page 11 MICOM FUNCTION 2-2. Automatic ice maker • The automatic ice maker can automatically make 8 pieces of ice cube at a time, 80 pieces a day. But these quantities may be varied according to various conditions including how many times the refrigerator door opens and closes. •...
  • Page 12 MICOM FUNCTION 2-4. Control of variable type of freezing room fan 1. To increase cooling speed and load response speed, MICOM variably controls freezing room fan motor at the high speed of RPM and standard RPM. 2. MICOM only operates in the input of initial power or special freezing operation or load response operation for the high speed of RPM and operates in the standard RPM in other general operation, 3.
  • Page 13 MICOM FUNCTION 2-9. Frost removal function 1. Frost removal is performed whenever total operation time of compressor becomes 7 - 7.5 hour. 2. In providing initial power (or returning power failure), frost removal starts whenever total operation time of compressor becomes 4 - 4.5 hour.
  • Page 14 MICOM FUNCTION 2-15. Failure Diagnosis Function 1. Failure diagnosis function is function to facilitate service when nonconforming matters affecting performance of product during use of product. 2. In occurrence of failure, pressing the function adjustment button does not perform function and only alarm sound ("Ding-") rings. 3.
  • Page 15 MICOM FUNCTION Note1) The abnormality of RT-Sensor, R2-Sensor Icemaker Unit, and Icemaker-Sensor is not indicated in trouble code but it is indicated when checking LED (when pressing both freezer temperature control button and refrigerator temperature control button for more than 1 second at the same time). RT-Sensor Normal : (_ LED on,...
  • Page 16 EXPLATION FOR MICOM CIRCUIT 1. Explanation for PWB circuit %1. Power circuit 1, GR-L207ERA, GR-L247ERA, GR-B207ERA, GR-B247ERA Power circuit consists of SMPS (SWITCHING MODE POWER SUPPLY) power. The SMPS consist of the rectifying part (BD1, CE1) converting AC voltage to DC voltage, the switching part (IC2) switching the converted DC voltage, transformer transferring energy of the primary side of the switching terminal to the secondary side and the feedback part (IC3, IC4) transferring it to the primary side.
  • Page 17 EXPLATION FOR MICOM CIRCUIT 1-2. Oscillation circuit Oscillation circuit is a circuit with the purpose of generating basic time for clock occurrence for synchronization and time calculation in relation with information transmission/reception of inside elements of IC1 (MICOM). The OSC1 must always use rated parts since if SPEC is changed, time calculated at the IC1 may be changed or no operation is done.
  • Page 18 EXPLATION FOR MICOM CIRCUIT 1-4. Load/dispenser operation, buzzer driving, door opening circuit 1. LOAD DRIVING CIRCUIT InEven if opening the door of freezing room or cold storage room during operation of fan motor at the freezing room, this circuit does not stop and operates at the standard RPM. In addition, if doors of freezing room or cold storage room, the fan motor normally operates at the RPM previously operated.
  • Page 19 EXPLATION FOR MICOM CIRCUIT 2) GR-B207ERA, GR-B247ERA The fan motor at the freezing room does not stop but operates if opening doors of the freezing room or cold storage room or the home bar during operation of the fan motor at the freezing room. (A), (B), (C) and (D) of door switch for the freezing room or cold storage room are connected to the door open sensing circuit toward both ends of switch to determine door open at MICOM Since a door switch of the home bar is connected to door switch (C), (D) of the cold storage room, it senses door opening...
  • Page 20 EXPLATION FOR MICOM CIRCUIT 2. Dispenser operation circuit POWER JWl oF74N CON5 AUGER MOTOR RY'a ALD112 SOLENOID DISPENSER CUBE LEVER S/W CON4 ALD112 _D65003AP WA_R ALS112 "00 CONE RYIO (NICDN} ALDll2 SOlYNOID DISPENSER "02 RYII ALDI12 PILOT VALVE "03 "05 OlSP LAMP _41€8...
  • Page 21 EXPLATION FOR MICOM CIRCUIT 3. Door opening sensing circuit <GR-L207ERA, GR-L247ERA> <GR-B207ERA, GR-B247ERA> (NICOM) C]06M R4.* C] D6M 51 " _TK F CONDITIONS Bell sounds when button on Beep sounds when warning MEASURING_ dosplay is pressed, door opening. POINTS ,O.05s,, 0.2s .., 0.1s, 0.4s !., 0.5s ,.!., 0.5s...
  • Page 22 EXPLATION FOR MICOM CIRCUIT 1-5. Temperature sensing circuit 1) GR-L207ERA, GR-L247ERA CON7 F SENSOR 16.2KF (AIN6) C 4I (AIN5) C015_ SENSOR CON8 R1 SENSOR C022 o023i R2 SENSOR (41N3) CON9 (AIN4) NAKER SENSOR CC24 CC12_ (AIN7) The above circuits are circuits attached to freezing room sensor or cold storage room sensor for adjusting setting temperature at the freezing room and cold storage room, ice-making sensor for sensing water temperature in ice-making, or an evaporator for sensing temperature of a frost removal sensor necessary for frost removal.
  • Page 23 EXPLATION FOR MICOM CIRCUIT 2) GR-B207ERA, GR-B247ERA MICOM) CON5 SENSOR (AIN6) CC17_ <_f:. RD1 _ 26.1KF *v,v% D SENSOR CC19_ ,_RR1 CON 6 261KF R1 SENSOR CC20 _261KF R2 SENSOR CC21 10€n_ 7 _ IOKF CCl1_ RT SENSOR _/K'_ The above circuits are circuits attached to freezing room sensor or cold storage room sensor for adjusting setting temperature at the freezing room and cold storage room, ice-making sensor for sensing water temperature in ice-making, or an evaporator for sensing temperature of a frost removal sensor necessary for frost removal.
  • Page 24 EXPLATION FOR MICOM CIRCUIT 1-6. Switch entry circuit The following circuits are entry circuits for sensing signal form test S/VV,electronic single motor damper reed StW for examining refrigerator. 1) GR-L207ERA, GR-L247ERA 2) GR-B207ERA, GR-B247ERA MICOM (MICOM} _R2g o SW1 cc13L 1-7.
  • Page 25 EXPLATION FOR MICOM CIRCUIT 1-8. Stepping motor operation circuit IC10 CON9 TA777#P 9,16 HIOOH /5ov STEPPING MOTOR For motor driving method, rotation magnetism is formed at coils wound on each phase of motor and stator and so motor becomes to rotate if applying "High" signal to the IC8 (TA777AF) at the MICOM PIN 33 and outputting "High", "Low" signal by step numbers fixed through MICOM PIN 34 and 35,.
  • Page 26 EXPLATION FOR MICOM CIRCUIT 1-9. Fan motor driving circuit (freezing room, M/C room) 1. This circuit performs function to make standby power '0' by cutting off power supplied to ICs inside of the fan motor in the fan motor OFF. 2.
  • Page 27 EXPLATION FOR MICOM CIRCUIT 2) GR-B207ERA, GR-B247ERA CON5 (MICOM) 150uH: 4.7K C FAN PV/M 2_E7F * _CC16 /25v 4.7K LOCK CC15 1N¢735A 6.2V _r77 R:2B 1/2w 22CDEuSF+ L2C2C14 & FRI02 K7C31 g8 /2sv cc_3 F FAN LOCK - 42 -...
  • Page 28 EXPLATION FOR MICOM CIRCUIT 1-10. Temperature compensation and over-cool/weak-cool compensation circuit 1. Temperature compensation at freezing room, cold storage room 1) GR-L207ERA, GR-L247ERA IRR14 _R15 ]' IOK Temperature compens&tion &t moore CRTq Temperature compens_tlon room _laK J 2) GR-B207ERA, GR-B247ERA _-•...
  • Page 29 EXPLATION FOR MICOM CIRCUIT • Temperature compensation table at the cold storage room is as follows: Mod_icat 470£_ 3.3kD 5.6kD 8.2k£_ 10k£_ 12kD 18kD 33kD 56kD 180kD resistance 0.5 °C 1 °C 1.5 °C 2 °C 2.5 °C 3 °C 3.5 °C 4 °C 4.5 °C...
  • Page 30 EXPLATION FOR MICOM CIRCUIT 1-11. Key Button Input and Display Lighting Circuit 1. GR-P247, GR-P207, GR-L247, GR-L207 This circuit is to judge the work of function control button on the operation panel and to light each function indication led (LED module). It is driven by SCAN method. MICOM CON6 CON101...
  • Page 31 EXPLATION FOR MICOM CIRCUIT 2. Compensation circuit for weak-cold, over-cold at f?eezing room 1) GR-L207ERA, GR-L247ERA 2) GR-B207ERA, GR-B247ERA 1OK • RIB] 10K < Temperature compensation in CUT JCR1 +1 °C +2 °C JCR2 +1 °C JCR3 -1 °C -2 °C JCR4 -1 °C Compensation...
  • Page 32 EXPLATION FOR MICOM CIRCUIT 3. PWB parts diagram and list 3-1. PWB Ass'y, main part diagram 1. GR-L207ERA, GR-L247ERA il.r_ - 47 -...
  • Page 33 EXPLATION FOR MICOM CIRCUIT 3-2. Parts list 1. GR-L207ERA, GR-L247ERA DWG NO. 3ESCRIP]qO_ SpEU' MAKER REUARK MAKER REMARK 3ESCRIP_O_ SPEC, )CE2271FB31 iB70JBSfll_ PWB,MAIN FR I(DS 11Q7A', 300 £AN L=16 220uF/16V )_EIO71H&_ {UBYCON CE9 i170JB201_ 1,2:1 7_mE E¢_'("K 100uF/25V 3CE1061K63_ 1uF/50V ]RA_9_S_{£L) SAM[L TRANS...
  • Page 34 EXPLATION FOR MICOM CIRCUIT BWG NO DESCRIPq]ON SpEC' MAKER REMARK )_KE900041 KTA1705 Q2,4 IOC )TR31g_ogA: TRANSISTOR KTC_198 q_,5 Iml0G009AF (RC1 O6rv i210JBBO011 _FS3510AC &_(CIE),B[_S _600JBBO011 ;KHV1091E TACT TEST S/W _600JB80031 3 P, D I F OTAX 0 6X7 J29_J34 4360701_ JUMP WIRE 0 6X10mm...
  • Page 35 EXPLATION FOR MICOM CIRCUIT 4. PWB circuit diagram - PWB circuit diagram may vary a little bit depending on actual condition. 1. GR-L207ERA, GR-L247ERA c IN1E PWB ASS'Y,MAIN - 53 -...
  • Page 36 EXPLATION FOR MICOM CIRCUIT - 54 -...
  • Page 37 ICE MAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD 1. Working Principles 1-1. Ice Maker Working Principles • Level Ice Maker Cube Mould for "Initial Control" after power is input. • Wait until the water in the cube mould is frozen after ice maker starts operation.
  • Page 38 ICE MAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD 2. Function of Ice Maker 2-1. Initial Control Function 1. When power is initially applied or reapplied after power cut, it detects level of ice maker cube mould after completion of MICOM initialization.
  • Page 39 ICE MAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD Ice Ejection Control Function 1. This is to eject ice from ice maker cube mould after ice making is completed. 2. If Hall IC signal is on within 3.6 seconds after ice ejection motor rotates in normal direction, it does not proceed ice ejection but waits.
  • Page 40 ICE MAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD 2-5 Test Function 1. It is to force the operation during operation test, service, and cleaning. The test switch is mounted under the automatic ice maker. The test function starts when the test switch is pressed for more than 0.5 second. 2.
  • Page 41 ICE MAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD 3. Ice Maker Troubleshooting * Troubleshooting: it is possible to confirm by pressing freezer and refrigerator temperature control buttons for more than 1 second. (ice maker is normal if all leds are on): refer to trouble diagnposis function in MICOM function 2-8 (page 18) Failed DC Power Change main PWB...
  • Page 42 ICE MAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD 4. Ice maker circuit part CON9 RIM1 1B2KF ICE MAKER SENSOR MAKER STOP <<4_R5 5 _47K 0025 TEST ICE MAKER (For wo_rd) (RevePse) ICE MAKER ICll MOTOR BA5222 _223/100V The above ice maker circuit is applied to the R S65DQG/DSG, R-S65DRG and consists of the ice maker unit part installed at the freezing room and the ice maker driving part of the main PWB.
  • Page 43 CIRCUIT CIRCUIT DIAGRAM GR-P(L)207,247*RA(QA)(No,e2_ • HOMEBAR PART(H/BAR-HEATER, DOOR CAPACITORPART,1HE PLUGTYPE, PWB ASSEMBLY,MAIN COMPRESSOR EARTHPART, PILOTVALVEON CIRCUIT DIAGRAMARE FUSE PART SUBJECTTO CHANGE IN DIFFERENTLOCALITESAND IP,_IO;N_447Q GON7 ACCORDANCE WITH MODELTYPE. •N :NEUTRAL F-FAN C-FAN MOTOR(BLDC) CAPACITOR P ART PERCEPTION [RUNNING RD/WH(I_ _ DEFROST.SENSOR COMP' __ O.L.P...
  • Page 44 CIRCUIT DIAGRAMME DE CIRCUIT GR-P(L)207,247*RA(QA)(No,e2 • PARTIE BAR D'APPARTEMENT BAR D'APPARTEMENT:, PORTE S/W), P ARRE GROUPEPWB PRINCIPAL CONDENSEUR,TYPEDERCHE, MISEALA TERRE DUCOMPRESSEUR, VANNES PILOTES FUSIBLE P,_nE SURLESCHEMA ELECTRIQUE SONT SUSCEPTIBLES DEMODIFICATIONS DANS (P,_IO;N_!47Q CON7 L(GN) LES DIFFEREN_SREGIONS ETSELON LETYPE CONTACT PORTE-F ETLE MODELE.MO'i_URDE •...
  • Page 45 TROUBLE DIAGNOSIS 1. TROUBLE SHOOTING CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK 1) No power on outlet. * Measuring instrument : 1. Faulty start Multi tester 2) No power on cord. Bad connection between adapter and outlet. (faulty adapter) •...
  • Page 46 TROUBLE DIAGNOSIS CLAIMS, CAUSES AND CHECK POINTS. HOW TO CHECK 2. No cooling. 2) Refrigeration system is clogged. • Check the clogged evaporator by heating (as Moisture Residual m oisture Air Blowing. Notperformed. soon as the cracking sound dogged, inthe evaporator. Tonshort.
  • Page 47 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK 3. Refrigeration 1) Refrigerant Partly leaked. • Weldjointleek. is weak. Partsleak. 2) Poor defrosting capacity. • Check visually. Drainpath (pipe)clogged. InjectP/Uintodrainhose. Inject t hroughthe hole. Sealwithdrain. Foreignmaterials P/Ulumpinput. penetration. Screwinput. Otherforeignmaterials input.
  • Page 48 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK 3. Refrigeration Residual Weakhe_ from heate_ SheathHeater- rated. is weak. frost. Heaterplate- rated, Heatercord-L- rated. Badhe_er assembly. He_er plate F Nocontact t o drain. L Loosened stoppercord. He_er cord-L Notcontact t o the evaporatorpipe.
  • Page 49 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK 3. Refrigeration 4) No cooling air circulation. is weak. Faultyfan motor, Fanis F Fanshroudcontact.- Clearance. constrained, _ Dampingevaporator c ontact. L Accumul_edresidual f rost. Insufficient Fanoverload. - Fanmisuse. Small coolingair discharge.
  • Page 50 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS, HOW TO CHECK 4. Warm 1) Colgged cooling path. refrigerator • P/U liquidleak. compartment Foreign matepals.-- P/Udump liquid. temperature. 2) Food storate. Storehotfond. Storeton mucha'c once. Dooropen. Packagesblockairflow. 5. No automatic 1) Faulty temperature sensor in freezer or refrigerator compartment. •...
  • Page 51 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK 6. Dew and 4) Dew on door. ice formation. Dew on the duct door. - Duct door heater is cut. Dew on the dispense F Recess Heateris cut. recess. L Ductdooris open./ Foreign material d ogging. Dew on the door surface.
  • Page 52 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK 7. Sounds 1) Compressor compartment operating sounds. Transformer sound. _lts ow_fault.-- Coregap. Badconnection. - - Correctscrewconnect. Drip tray vibration sound Badassembly. Distortion. Foreignmaterials inside. Back cover machine sound. T Badconnection. Partlydamaged.
  • Page 53 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK 8. Faulty lamp 1) Lamp problem. ,Filament blows out. (freezer and Glass is broken. refrigerator 2) Bad lamp assembly. .Not inserted. compartment). Loosened by vibration. 3) Bad lamp socket. Disconnection._ Bad soldering.
  • Page 54 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK 10. Structure, 1) Door foam. appearance Sag. Weaktorqueof Bo_is loosened dunng and others. hingeconnection, transporfaien. Nottightlyfastened. Screwwornout. Weakgasket AdhesionsurPace. adhesion. Fixedtape. Netwelltixed. Noise during Hingeinterference. Biggerdoorfoam. operation. Hinge-Pin tilted-Poor f latness. Nowasher.
  • Page 55 2. Faults 2-1. Power Problems Causes Checks Measures Remarks No power on - Power cord cut. - Check the voltage with tester. -Replace the components. outlet. - Faulty connector insertion. - Check visually. -Reconnect the connecting parts. Faulty connection between plug - Check visually.
  • Page 56 2-3. Temperature Problems Causes Checks Measures Remarks Lock -- Check resistance with a High Poor cool air circulation due to faulty Replace fan motor. fan motor. tester. temperature in the freezer 0_): short. oo_):cut. Reconnect and reinsert. compartment. - Rotate rotor manually and check rotation.
  • Page 57 2-4. Cooling Problems Causes Checks Measures Remarks High Refrigerant leak. Check sequence Weld the leaking part, recharge the Drier must be replaced. temperature 1. Check the welded parts of the refrigerant. in the freezer drier inlet and outlet and drier compartment.
  • Page 58 Problems Causes Checks Measures Remarks High Cycle pipe is clogged. Check sequence. - Heat up compressor discharging Direr must be replaced. temperature 1. Check temperature of condenser weld joints with touch, disconnect the freezer manually. the pipes, and check the clogging. If it is warm, it is OK.
  • Page 59 2-5. Defrosting failure Problems Causes Checks Measures Remarks 1. Check the resistance of heater. Seal the lead wire with No defrosting. Heater does not generate heat as Heating wire is short and wire is cut. 0D: Short. o_): Cut. the heating wire is cut or the circuit •...
  • Page 60 Problems Causes Checks Measures Remarks No defrosting Melting fuse blows out. _ Check melting fuse with tester. - Faullty parts: parts replacement. 1) Lead wire is cut. If 0£_: OK. - Check wire color when maeasuring 2) Bad soldering. If _: wire is cut.
  • Page 61 2-6. Icing Problems Causes Checks Measures Remarks Check the defrost Icing in the 1) Bad circulation of cool air. Check the food is stored properly - Be acquainted with how to use. refrigerator - Clogged intake port in the (check discharge and intake port - Sealing on connecting parts.
  • Page 62 Problems Causes Checks Measures Remarks Ice in the freezer 1) Bad cooling air circulation. - Check food storage conditions - Be acquainted with how to use. - Check the parts related compartment. Intake port is colgged in the freezer visually.(Check clogging at intake - Check defrost (Check ice on the to defrosting if the...
  • Page 63 2-7. Sound Problems Causes Checks Measures Remarks "Whizz" sound 1.1 Check the level of the 1. Loud sound of compressor 1) Maintain horizontal level. operation. refrigerator. 2) Replace rubber and seat if they 1.2 Check the rubber seat are sagged and aged. conditions (sagging and aging).
  • Page 64 Problems Causes Checks Measures Remarks Vibration sound. 1. Vibration of shelves and foods in 1-1. Remove and replace the 1) Reassemble the vibrating parts and insert foam or cushion where ("Cluck") the refrigerator. shelves in the refrigerator vibration is severe. 2.
  • Page 65 Problems Causes Checks Measures Remarks - Check the restrainer attached on the Sound "Burping" It happens when refrigerant expands - Check the sound of refrigerant at the initial installation. (almostthe same at the end of capillary tube. evaporator and capillary tube weld as animals crying - Check the sound when the refrigerator joints and attach another restrainer.
  • Page 66 2-8. Odor Problems Causes Checks Measures Remarks Food Odor. Food (garlic, kimchi, etc) Check the food is not wrapped. Dry deodorizer in the shiny and Check the shelves or inner windy place. Store the food in the closed wall are stained with food juice. Check the food in the vinyl wraps.
  • Page 67 2-9. Micom Problems Symptom Causes Checks Measures Remarks Bad PCB All display Bad connection Bad connector Visual check on connector Reconnect electric power. LEDS are off. between Main PCB connection from main connection, connector. and display circuit. PCB to display PCB. Defective PCB trans.
  • Page 68 Problems Causes Checks Measures Remarks Symptom Freezer Reconnect Lead Bad cooling, Compressor does Compressor Lead Wire Check compressor Lead Wire not start. is cut. with a tester. Wire. temperature Refer to load high. Defective compressor Measure voltage at PCB CON5 Replace relay(RY1 driving relay.
  • Page 69 Problems Causes Measures Symptom Checks Remarks Reconnect lead Bad cooling Wrong Defective AC Damper. Check AC damper Check if AC damper motor and motor and reed switch reed switch lead wire are wire. Refrigerator cut with a tester. and lead wire are cut. temperature.
  • Page 70 Problems Symptom Causes Checks Measures Remarks Bad defrost. Defrost is not Defrost lead wire is cut. Check if defrost lead wire is cut with a Reconnect Lead working, tester. Wire. Defective defrost driving relay. Check the voltage of CON5 (1 and 7) Replace relay (RY 7 Refer to load with a tester after pressing main...
  • Page 71 Problems Causes Checks Measures Symptom Remarks Defective Trouble mode indication. Refer to mode Buzzer rings Check trouble diagnosis function. Repair troubles indication in display button. but key does not sense even function button is explanations. pressed. Door Buzzer Buzzer Check lead wire associated with door Check model Defective connecting lead wire from Repair lead wire.
  • Page 72 TROUBLE DIAGNOSIS 3. Cooling Cycle Heavy Repair 3-1. The Heavy Repair Standards for Refrigerator with R134a Refrigerant Items Unit Standards Purposes Remarks Pipe and piping Min. Pipe:within 1 hour. To protect The opening time should be reduced to a system opening time. Comp:within Moisture half of the standards during rain and...
  • Page 73 TROUBLE DIAGNOSIS 3-2. Summary Of Heavy Repair Process Contents Tools - Cut charging pipe ends and discharge refrigerant from Filter, side cutters drier and compressor. - Use R134a oil and refrigerant for compressor and drier Pipe Cutter, Gas welder, N2 gas - Confirm N2sealing and packing conditions before use.
  • Page 74 TROUBLE DIAGNOSIS 3-3. Precautions During Heavy Repair Items Precautions 1. Use of tools. 1) Use special parts and tools for R134a. 2. Removal of retained 1) Remove retained refrigerant more than 5 minutes after turning off a refrigerator. refrigerant. (If not, oil will leak inside.) 2) Remove retained refrigerant by cutting first high pressure side (drier part) with a nipper and then cut low pressure side.
  • Page 75 TROUBLE DIAGNOSIS 3-4. Practical Work For Heavy Repair Precautions Items 1. Removal of residual Evaporator refrigerant. KEYPOINTING Compressor pressure side Observe the sequence for removal of refrigerant. Drier (If not, compressor oil may leak.) t High pressure side R_enser _ ..Intake 1) Remove residual refrigerant more than 5 minutes later after turning off the refrigerator.
  • Page 76 TROUBLE DIAGNOSIS Items Precautions 4.Vacuum degassing. Evaporator Suction pipe Compressor Dner ® pressure High Blue pressure VaCCl KEYPOINTING - If power is applied during vacuum degassing, vacuum degassing shall be more effective. Pipe Connection - Operate compressor Connect a red hose to the high pressure side and a blue hose to the while charging refrigerant.
  • Page 77 TROUBLE DIAGNOSIS Items Precautions Evaporator Compressor Condenser Bombe 4) Refrigerant Charging Charge refrigerant while operating a compressor as shown above. 5) Pinch a charging pipe with a pinch*off plier after completion of charging. 6) Braze the end of a pinched charging pipe with copper brazer and take a gas leakage test on the welded parts.
  • Page 78 TROUBLE DIAGNOSIS 3-6. Brazing Reference Drawings PIPE ASSY, HOT LINE PIPE ASSY, HOT LINE (Freezer) (Refrigerator) Copper Brazer Copper CAPI - TUBE DRIER ASSY Copper Brazer PIPE ASSY, SUCTION Copper Brazer JOINT\CONDENSER ASSY,WIRE "- Silver Brazer Copper Brazer Copper Brazer Coppper Brazer - 98 -...
  • Page 79 TROUBLE DIAGNOSIS 4. HOW TO DEAL WITH CLAIMS 4-1. Sound Problems Checks and Measures "Whizz" sounds • Explain general principles of sounds. • All refrigerator when functioning properly have normal operating sound. The compressor and fan produce sounds. There is a fan in the freezer compartment which blows cool air to freezer and refrigerator compartments.
  • Page 80 TROUBLE DIAGNOSIS Problems Checks and Measures Sounds of water flowing • Explain the flow of refrigerant. • When the refrigerator stops, the water flowing sound happens. This sound happens when the liquid or vapor refrigerant flows from the evaporator to compressor. "Click"sounds •...
  • Page 81 TROUBLE DIAGNOSIS 4-2. Measures for Symptoms on Temperature Checks and Measures Problems Refrigeration is weak. • Check temperature set in the temperature control knob. • Refrigerator is generally delivered with the button set at "normal use" (MID). But customer can adjust the temperature set depending on their habit and taste.
  • Page 82 TROUBLE DIAGNOSIS 4-3. Odor and Frost Checks and Measures Problems Odor in the refrigerator compartment. • Explain the basic principles of food odor. • Each food has its own peculiar odor. Therefore it is impossible to prevent or avoid food odor completely when food is stored in the completely sealed refrigerator compartment.
  • Page 83 TROUBLE DIAGNOSIS 4-5. Others Problems Checks and Measures The refrigerator case is hot. • Explain the principles of radiator. • The radiator pipes are installed in the refrigerator case and partition plate between the refrigerator and the freezer compartment in order to prevent condensation formation.
  • Page 84 HOW TO DISASSEMBLE AND ASSEMBLE 1. DOOR (3) Disconnect upper hinge 0 from a hinge supporter @ by grasping the front part of upper hinge and lifting up (Hinge Assy, U) in arrow direction _) and pull forward 1) Remove lower cover and then disconnect water in arrow _) direction.
  • Page 85 HOW TO DISASSEMBLE AND ASSEMBLE 2. HANDLE 4) Disassembly of a grille fan (L) : Hold upper part of a grille fan(L) and pull forward carefully. 1) Put blade screwdriver into a groove on the side of a 5) Loosen two screws. Deco handle and lift up a little bit in arrow (!) direction 6) Disassembly of shroud.
  • Page 86 HOW TO DISASSEMBLE AND ASSEMBLE 5. DISPENSER 4) Loosen four screws with a phillips screwdriver and pull a funnel Assy to disconnect. 1) Disconnect button assembly by pulling down until it stops and then pulling forward. Funnel Assy Funne < Assy _:::__' Button...
  • Page 87 HOW TO DISASSEMBLE AND ASSEMBLE 7) Dispenser Related Parts FRAME ASSY, DISPLAY COVER, DISPENSER PWB(PCB) ASSY, DISPLAY FUNNELASSY SWITCH, MICRO FRAME, FUNNEL 10 LEVER(SWITCH) 11 FUNNEL 12 RUBBER, FUNNEL 13 SWITCH, ROCKER 14 SOLENOID ASSY 15 SPRING 16 HOLDER, LEVER 17 CAP, DUCT 19 LEVER, DISPENSER RUBBER, CAP...
  • Page 88 HOW TO DISASSEMBLE AND ASSEMBLE 6. WATER TANK AND WATER LINE parts disassembly and assembly %2. Home 1) Disconnect H/Bar Door Assy (D • The water tank at back and lower part of a refrigerator is fixed by one screw and has a capacity containing 7 2) Loosen two screws (_) attached on the refrigerator glasses (180cc per glass) of cold water.
  • Page 89 EXPLODED VIEW FREEZER DOOR PART: GR-P247, GR-P207, GR-L247, GR-L207 - 109 -...
  • Page 90 EXPLODED VIEW Ref No. : GR-L247, GR-L207, GR-B247, GR-B207 REFRIGERATOR DOOR PART * : Optional part - 112 -...
  • Page 91 EXPLODED VIEW FREEZER COMPARTMENT * : Optional part - 113 -...
  • Page 92 EXPLODED VIEW REFRIGERATOR COMPARTMENT : Optional part -114-...
  • Page 93 EXPLODED VIEW ICE & WATER PART : Optional part - 115-...
  • Page 94 EXPLODED VIEW MACHINE COMPARTMENT : Optional part - 116 -...
  • Page 95 EXPLODED VIEW DISPENSER PART L.._. - 117 -...

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