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LG GR-L247ER Parts List And Instructions Manual
LG GR-L247ER Parts List And Instructions Manual

LG GR-L247ER Parts List And Instructions 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.
1.13e 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 propedy 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.
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, electdc 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,
plesse disconnect the
door gasket first and scrap it where children are not
accessible.
-3-

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Summary of Contents for LG GR-L247ER

  • Page 1 WARNINGS AND PRECAUTIONS FOR SAFETY Please observe the following safety precautions in order to 8. 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 1.13e care of an electric shock.
  • Page 2 PARTS IDENTIFICATION 3. Ref No. : GR-L247ER, GR-L207ER Cover Hinge CoverPWB > Water Tube Dispenser Lain Dispenser Button II_l_ Freezer Refrigerator Compartment Compartment Shelf Automatic Door rack ice maker (optional) Lamp- Sheff. (Steel. T/Glass) Shelf or Shelf (optional) r rack Door drawer/Meat drawer Lower Cover...
  • 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 end 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 Pipe 2-1. When connecting directly to the water tap. 2. How to Install Water • Before Installation • Please confirm the following installation parts, 1. The icemaker requires the water pressure of 1.5 o 8.5kgf/cm 2. (It is acceptable if city water fills a cup of 180c_ 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.
  • 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 Fitter (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 (O) and lifting it to the direction (_)) and move it to the lower part.
  • Page 8 HOW TO INSTALL REFRIGERATOR 3. How to Control the Amount of'Water Supplied to Icemaker. 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 : • Do not put hands or tools into the chute to confirm the operation of geared motor.
  • 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 micutes before disconnecting PWB cover as 310V is applied in the control panel.
  • Page 10 MICOM FUNCTION I, Monitor Panel 1-1. GR-P247, GR-P207, GR-L247, GR-L207 1-2. GR-C247, GR-C207, GR-B247, GR-B207 Function Monitor (:30 Freezer corn ar_nent Refrigerator compartment Dispensersete_onbuttcn tempera[we Control Buttol_ temperature con#ol Button 2. Description of Function 2-1. Funnction of Temperature Selection Division 1st Press 2nd Press 3th 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 I. 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.
  • 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 stads 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 preasing both freezer temperature control button and refrigerator temperature control button for more than 1 second at the same time). Normal : (_) LED on, Abnormal : (_) LED Off.
  • Page 16 EXPLATION FOR MICOM CIRCUIT 1. Explanation for PWB circuit 1-1. 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 pdmary 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 transmissionlreception of inside elements of IC1 (MICOM) The OSC1 must always use rated parts since if SPEC is changed, time calculated at the ICl 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 faEven 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).
  • Page 20 EXPLATION FOR MICOM CIRCUIT 2. Dispenser operation circuit PO_R JW1OP_N :AIN14) AUGER MOTOR ALD!12 DISPENSE CUBE LEVER S_RW SOLENOID CON4 Ak_ll2 p, iN_7) WATER ALD112 CON[ (MICOM) SOLENOID DISPENSER R_¢11 ALD112 PILOT VALVE _K/ZW DISP-LAMP _721 t) Check load driving status WATER VALVE SOLENOID GEARED...
  • Page 21 EXPLATION FOR MICOM CIRCUIT 3, Door opening sensing circuit <GR.L207ERA, GR-L247ERA> <GR-B207ERA, GR-B247ERA> rA. I°_ ..RII3 ..R4 5 ..I("Ic0")I Bell sounds when button on _.._DITtON Beep sounds when warning dosplay is pressed• MEASURING_ POINTS door opening. ,£._, O.2s ,0.1_, O.4s...
  • Page 22 EXPLATION FOR MICOM CIRCUIT 1-5. Temperature sensing circuit 1) GR-L207ERA, GR-L247ERA CON7 (AIN6) D-SENSOR F-SENSOR (AIN5) CON8 (M[CIqM) (AtN2) R2-SENSOR R1-SENSOR CON9 RIM1 16.Z'_F o:=j_ ICE MAKER SENSOR 1OKF RT-SNR (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 ise-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 16,2_ (AINS] CC17] 26.1KF D-SENSOR (AIN5 CC19 F-SENSOR 104/._ CON6 R413 26.1KF (AJN2 CC20_- "_ 104 m_ _> RR2 26.1KF R2-SENSOR (AIN3) R!-SENSOR 104- IOKF (AJN7) cc))ilo4 _,> RT-SENSOR 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/W. electronic single motor damper reed S/W for examining refrigerator. 1) GR-L207ERA, GR-L247ERA 2) GR-B207ERA, GR-B247ERA 1-7. Option designation circuit (model separation function) 1) GR-L207ERA, GR-L247ERA 2) GR-B207ERA, GR-B247ERA (MICOM)
  • Page 25 EXPLATION FOR MICOM CIRCUIT 1-8. Stepping motor operation circuit I tclO C0 N 9 TA7774P 9,16 MIC[]_ <ICI) STEPPING £ L-'i 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"...
  • 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 This is a circuit to perform a temporary change of speed for the fan motor and applies DC voltage up to 7.5V - 16V to motor.
  • Page 27 EXPLATION FOR MICOM CIRCUIT 2) GR-B207ERA, GR-B247ERA CON5 33,0 (MICOM) KTA1705 _o.-\ 4.7K 3,9K P_/M C-FAN R3,5 °[ ° &_8 FRI02 /'25V T C-FAN LOCK 1N4735A ZC,2 6.2V _102 4,7K 3.9K F-FAN pX#M CE6 + LCC14 • _4v_ F-FAN LOCK CC13 - 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 ,coM Temperature cot_penso.tton e,l: R-root_ _INO) F RC-RT] Temper¢ture cor_pens(x±lon _ 1 R-room 57 IAIN ) L _O_K_J F RC-FT] I_14 0K_J (MICOM...
  • Page 29 EXPLATION FOR MICOM CIRCUIT I_ Temperature compensation table at the cold storage room is as follows: i_,_ 470Q 12kD 18k_ 33k_] 56k.Q 180k_ 2k!z 3.3k_z 5,6kQ 8,2k.(-) 10k_-2 _Lstar_e 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-L2O7 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 ddven by SCAN method.
  • Page 31 EXPLATION FOR MICOM CIRCUIT 2. Compensation circuit for weak-cold, over-cold at freezing room 1) GR-L207ERA, GR-L247ERA 2) GR*B207ERA, GR-B247ERA (MICOM)[ Temperaturecompensation in CUT +1 °C JCR1 +2 °C +1 °C JCR2 -1 °C JCR3 -2 °C -1 °C JCR4 Compensation Compensation Temperature compensation value for weak-cold...
  • Page 32 EXPLATION FOR MICOM CIRCUIT 3. PWB parts diagram and list 3-1. PWB Ass'y, main part diagram -47 -...
  • Page 33 EXPLATION FOR MICOM CIRCUIT 3-2. Parts list t. GR-L207ERA, GR-L247ERA e.o. _D, 3_tce =e_c, MAKEF ¢5 I_S_271P_ 22_uF,/1 sv _10TIK_ _'01U1_1_ _0Cur/25V C£g _170Je21_* 74_F Xt]0_<IL_ luF/5OV _B_F/25V 50 _oT_x ='o_m*q oou_/sov W1227_II_ !2G_$'pZSV CE_,7 X34#71_ 471/_3v £X1_10_ _,_lat_R_ IO2/5OV :Ct_,20 223/50V :CI7,19...
  • Page 34 EXPLATION FOR MICOM CIRCUIT Rl_l_W_ KTA 1705 }2,4 3mt_ <Re106_ _" _21;d_61_._A _ 3FS3510AI S_HIM s_*eaem_ Sk'HV1091_ ,*cy 3P,DIF )TAX 104 -- )IP $/_ 1_6X7._t J29_J34 0.5Xl0,._m"_ 10.= 106, _J_o01_ _C RLTEI tftl_f_E _ILKC _071 _' lx120 P, IC {_2_/IA) t 13 1_15_4,X CI._W{ COIL I 50...
  • Page 35 EXPLATION FOR MICOM CIRCUIT 4. PWB circuit diagram - PWB circuit diagram may va_' a little bit depending on actual condition. 1. GR-L207ERA, GR-L247ERA...
  • Page 36 EXPLATION FOR MICOM CIRCUIT ' _=.=" T" , p_ -" --I r :_1 _:! -54-...
  • Page 37 ICE MAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD 1. Working Principles t-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. Fnnction of Ice Maker 2-1. Initial Control Function 1. When power is initially applied or reapplled atter power cut, it detects level of Joe maker cube mould after completion of MICOM initialization.
  • Page 39 ICE MAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD 2-4. 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 fun_ion 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 possibleto confirmby pressingfreezer and refrigerator temperature controlbuttons for more than 1 second.(ice maker is normal if all lads are on): refer to troublediagnposis function in MICOM function 2-8 (page 18) Failed DC Power Change main PWB I...
  • Page 42 ICE MAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD 4. Ice maker circuit part CON 9 "_- mM1 (^iN4) cc2J- _" ICE MAKER SENSOR ,o4_ STBP S/V _*'_ I 5 _,_-- ClCo2 TEST S/V cc27T 17 "_IHfLL (MICOM) IOOUF 4_" 4,7 4,7K /25V (rorw&rd)
  • Page 43 TROUBLE DIAGNOSIS 1. TROUBLE SHOOTING CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK * Measuring instrument : 1) No power on outlet. 1. Faulty start Multi tester 2) No power on cord. • Check the voltage. Bad connection between adapter and outlet. (faulty adapter) If the voltage is within _+85% The Inner diameter of adapter, of the rated voltage, it isOK.
  • Page 44 TROUBLE DIAGNOSIS CLAIMS, CAUSES AND CHECK POINTS, HOW TO CHECK 2. No cooliog. 2) Refrigeration system is clogged, • Check the ebbed evaporator by heating (as -Moisture Residualmois_re -AkBk_ng, _Notl:_dem_d. sOOnas the cracking sound dogged, in theevaporator. _ Too_. begins, the evaporator start _-ImpOssible moisture #ee2_n9) L LOW air pressure.
  • Page 45 TROUBLE DIAGNOSIS CAUSES AND CHECK POINTS, CLAIMS. HOW TO CHECK 3. Refrigeration 1) Refdgerant ParUy leaked. E Weldjoint_,_ is weak, Parts _k. 2) Poor defrosting capacity. • Check visual;y, -Drain path (pipe) dogged. p,'lJ into6rain _. _ ir_._ _h L- S__._th 6rain. - Foreignmate_3_s[_ P/Uiampinp_ _- 01her_e_ r_te_s...
  • Page 46 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK 3 Refrigeration R_d_ We_kheatflora heater. [ Sheath Heater. rated. is weak. frost _ter #_-rated. • Heaterco_d-L - rated. L_x_=d stopp_corcl. [Heaterplate [ No contact to d_in. -[_dheatefasseml_y. Hea_ cord-Lr N_ contact to Ihe e_pipe.
  • Page 47 TROUBLE DIAGNOSIS CAUSES AND CHECK POINTS. CLAIMS. HOW TO CHECK 4) No coolingair circulation. 3. Refrigeration is weak. l FSUlly f anmotor. - - FSU is i- Fanshroud contact. - Clearance. oons_ned. _-Damping evaporator contac_ - Accumulated res_ual frost Small c coln9 air -- Insuff_t F-Fanovedo_.-Faanf_suse, dischage, motor R PM _-BadkJwtem_peratee...
  • Page 48 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK 4, Warm 1) Colgged cooling path, refrigerator E ptlJ liquidleak. compartment Fmeign mats,'ials.-- PM damp liquid. temperature. 2) Food storate. ]-- Storehotfood. Storetea much atonce, _,.No automatic 1) Faulty temperature sensor in freezer or refrigerator compartment, •...
  • Page 49 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK 6, Dew and 4) Dew on doo_ ice formation. --Dew on the ductdoor.- Ductdoorheateris cut. --Dew on the dispense _ RecessHeater_cut recess. L Ductdcor_open./Fore_rna_rialdogging. -- Dew on the door surface. F Not fully filled. T Surface._ In i,t,_-,w_ L Cormer._- _"::--'_- •...
  • Page 50 TROUBLE DIAGNOSIS CAUSES AND CHECK POINTS. HOW TO CHECK CLAIMS. 7. Sounds Compressor compartment operating sounds. Transformer sound. __ Itsown fault -- Coregap. Badconnec_on.--Com_ screw cannec_n. Drip tray vibration sound_ F_ei_ materialsinside. Back cover machine sound. _ Bad comec_on. L ParUy _ed. Condenser drain sound.
  • Page 51 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. Dtsconnection.
  • Page 52 TROUBLE DIAGNOSIS CAUSES AND CHECK POINTS. HOW TO CHECK CLAIMS. 10, Structure, I) Door foam. appearance and others. -- Sag. ___ Weak torque o f adhesion.Weakh_lge connection.gasket out.__ BdtisIooeaned duringl transportaJen.AdhesionNat Screwv,_rn _h_ fasteaad.surface. Fkad tape. -- Not w ell f ixad. Noise dudng-- H_nge i nter let e rie.
  • Page 53 2. Faults 2-1. Power 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 visuaUy.
  • Page 54 2-3. Temperature Problems Causes Remarks Checks Measures - Lock -- Check resistance with a High Poor cool air circulation due to faulty - Replace fan motor. fan motor, tester. temperature in the freezer 0Q: short. cut. - Reconnect and reinserf. compartment.
  • Page 55 2-4. Cooling Problems Causes Checks Measures Remarks High Refrigerant leak. Check seauence 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 56 roblems Checks Measures Remarks Causes Check sequence. High - Heat up compressor discharging Direr must be replaced, Cyble pipe is clogged. temperature in 1, Check temperature of condenser weld joints with touch, disconnect freezer manually, the pipes, and check the clogging. compartment.
  • Page 57 2-5. Defrosting failure Problems Causes Checks Measures Remarks Seal the lead wire with No defrosting. Heater does not generate heat as 1. Check the resistance of heater. Heating wire is short and wire is cut. 0_2: Short. ,_2: Cut. ihe heating wire is cut or the circuit •...
  • Page 58 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 OQ: OK. - Check wire color when maeasurlng 2) Bad soldering. If o,,_}:wire is cut. resistance with a tester.
  • Page 59 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 60 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 61 2-7. Sound Checks Measures Remarks Problems Causes "Whizz" sound 1.1 Check the level of the 1. Loud sound of compressor 1) Maintain horizontal level. opera,on. refrigerator. 2) Replace rubber and seat if they 1.2 Check the rubber seat are sagged and aged. conditions (sagging and aging).
  • Page 62 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 63 Problems Checks Measures Remarks Causes * Check the sound of refrigerant at the - Check the restrainer attached on the Sound "Burping" it happens when refrigerant expands almost the same initial instalration. evaporator and capillarytube weld at the end of capillary tube.
  • Page 64 2-8. Odor Causes Problems Checks Measures Remarks Food (garlic, kimchi, etc) - Check the food is not wrapped. - Dry deodorizer in the shiny and - Check the shelves or inner windy place. Food Odor. - Store the food in the closed wail are stained with food juice.
  • Page 65 2-9. Micom Problems Causes Remarks Measures Symptom Checks Bad PCB Bad connection Bad connector Reconnect All display Visual check on connector LEDS are off. connec_r. electric power. between Main PCB connection from mai£_ and display circuit. connection. I PCB to display PCB, Defective PCB trans.
  • Page 66 Problems Symptom Causes Checks Measures Remarks 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 Replace relay(RY1 M3easure voltage at PCB CON5 and RY14) or PCB.
  • Page 67 Problems Symptom Causes Checks Remarks Measures Bad cooling Wrong Detective AC Damper. Check AC damper Check if AC damper motor and Reconnect lead Refrigerator motor and reed switch reed switch lead wire are wire, temperature. and lead wire are cut. cut with a tester.
  • Page 68 Problems Symptom Causes Checks Measures Remarks _d 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 69 Problems Symptom Causes Checks Measures Remarks Defective Buzzer rings Trouble mode indication. Check trouble diagnosis function. Repair troubles Refer to mode display button, but key does indication not sense even funCtion button is explanaUons. pressed. Check lead wire associated with door Buzzer Defective connecting lead wire from...
  • Page 70 TROUBLE DIAGNOSIS 3. Cooling Cycle Heavy Repair 3-1. The Heavy Repair Standards for Refrigerator with R134a Refri erant Items Unit Remarks Standards Purposes Pipe and piping Min. Pipe:within 1 hour. To protect The opening time should be reduced to a system opening time, Camp:within Moisture...
  • Page 71 TROUBLE DIAGNOSIS 3-2. Summary Of Heavy Repair Process Contents Tools Filter, side cutters - Cut charging pipe ends and discharge refrigerant from drier and compressor. - Use R134a oil and refrigerant for compressor and drier Pipe Cutter, Gas welder, N2 gas - Confirm N2 sealing and packing conditions before use.
  • Page 72 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 73 TROUBLE DIAGNOSIS 3-4. Practical Work For Heavy Repair Precautions items 1. Removal of residual Evaporator Low pressure side refrigerant. KEYPOINTING Compressor Observe the sequence for removal of refrigerant. (If not, compressor oil may leak,) I High pressure side R_denser "-_ ..
  • Page 74 TROUBLE DIAGNOSIS items Precautions 4.Vacuum degessing. Evaporator Suction CompreSsor Drier prBssure High pr_'ssure Yellow KEYPOINTING - If power is applied during vacuum degaesing, 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 75 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 pads.
  • Page 76 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 PIPE ASSY, JOINT Copper Brazer PIPEASSY.JOINT\ CONDENSER ASSY.WIRE Copper Brazer Silver Brazer CopperBrazer Ceppper Brazer - 98 -...
  • Page 77 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 78 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"...
  • Page 79 TROUBLE DIAGNOSIS 4-2. Measures for Symptoms on Temperature Problems Checks and Measures 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. If you feel the refrigeration is weak.
  • Page 80 TROUBLE DIAGNOSIS 4-3, Odor and Frost Problems Checks and Measures 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 81 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 82 HOW TO DISASSEMBLE AND ASSEMBLE 1. DOOR (3) Disconnect upper hinge (_) 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 _...
  • Page 83 HOW TO DISASSEMBLE AND ASSEMBLE 2. HANDLE 4) Disassembly of a grille fan (L) : Hold upper part of a gdlle 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 O direction 6) Disassembly of shroud.
  • Page 84 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. Bu_on 5) Duct cap Assy is disconnected if hold lever connecting screw is loosened with a phillips screwdriver.
  • Page 85 HOW TO DISASSEMBLE AND ASSEMBLE 7) Dispenser Related Parts FRAME ASSY, DISPLAY COVER, DISPENSER PWB(PCB) ASS'(, DISPLAY FUNNEL ASSY -- SWITCH, MICRO FRAME, FUNNEL LEVER(SWITCH) FUNNEL RUBBER, FUNNEL 13 SWITCH, ROCKER SOLENOID ASSY 15 SPRING 16 HOLDER, LEVER CAP, DUCT 19 LEVER, DISPENSER 2-01 RUBBER, 21 BUTTON...
  • Page 86 HOW TO DISASSEMBLE AND ASSEMBLE 6. WATER TANK AND WATER LINE 7-2. Home Bar parts disassembly assembly 1) Disconnect H/Bar Door Assy O. • The water tank at back and lower part of a refrigerator fixed by one screw and has a capacity containing 2) Loosen two screws (_ attached on the refrigerator glasses (180cc per glass) of cold water.
  • Page 87 EXPLODED VIEW FREEZER DOOR PART: GR-P247. GR-P207, GR-L247, GR-L207 - 109 -...
  • Page 88 EXPLODED VIEW Ref No. : GR-L247, GR-L207, GR-B247, GR-B207 REFRIGERATOR DOOR PART * : Optional part -112-...
  • Page 89 EXPLODED VIEW FREEZER COMPARTMENT * : Optional part -113-...
  • Page 90 EXPLODED VIEW REFRIGERATOR COMPARTMENT : Optional part - 114 -...
  • Page 91 EXPLODED VIEW ICE & WATER PART * : Optional part -115-...
  • Page 92 EXPLODED VIEW MACHINE COMPARTMENT : Optional part -116-...
  • Page 93 EXPLODED VIEW DISPENSER PART - 117-...

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Gr-l207er