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LG LRSPC2041T User Manual
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LG LRSPC2041T User Manual

LG LRSPC2041T 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 refdgarator
and to prevent
accident and danger dudng repair.
1. Be care of an electdc shock. Disconnect
power cord
from wall ot_let and wait for more then 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 electdc shock.
4. If the wall outlet is over loaded, it may cause fire. Please
use its own individual electrioal 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.
9. 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 ioemaker 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 futl of water on the top of the
refrigerator.
14. Do not put glass bottles with full of water into the
freezer. The contents shell 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 LRSPC2041T

  • Page 1 WARNINGS AND PRECAUTIONS FOR SAFETY 8. Do not fray, damage, machine, heavily bend, pull out, Please observe the following safety precautions in order to or twist the power cord. use safely and correctly the refdgarator and to prevent accident and danger dudng repair. 9.
  • Page 2 PARTS IDENTIFICATION 3. Ref No. : GR-L247ER, GR-L207ER Cover Hinge Cover PWB _r-- > Water Tube DispenserBurton Freezer Refdgerator Compartment Compartment Shelf Automatic ice maker holder (optional) Lamp- Sheff< (Steel, T/Glass) Shelf Drawer_ or Sheff (optional) Door rack drawer/Meat drawer Lower Covet Conversion Switch Humidity Switch...
  • 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 fiat floor, the height offreezer and refdgerator door may not be the same.) 2. If the height of freezer door is higher than that of 1.
  • Page 4 HOW TO INSTALL REFRIGERATOR 2-1. When connecting directly to the water tap, Pipe 2. How to Install Water • Please confirm the following installation parts. • Before Installation 1. The icemaker requires the water pressure of 1.5 - 8.5kgf/cm 2. (It is acceptable if city water fills a cup of 180o:;...
  • Page 5 HOW TO INSTALL REFRIGERATOR Caution : • Feed pipe should be connected to cold water 1. Connection of Pipe Connector A and B. 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 waten *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 1. Before installing the filter, take out the top shelf of the refrigerator after tilting it to the direction (C)) 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 V_ater 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 : • Do not put hands or tools into the chute to confirm the operation of geared motor.
  • Page 9 HOW TO INSTALL REFRIGERATOR Caution : When adjusting the amount of water supplied, 3-2. Control the amount of water supplied to the 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 applied in the control panel.
  • Page 10 MICOM FUNCTION 1. Monitor Panel 1-2. GR-C247, GR-C207, GR-B247, GR-B207 1-1, GR-P247, GR-P207, GR-L247, GR-L207 Function Monitor t"t Freezer cornpertruant Re fdgerator cornparWenl Dispenser se_ectio_ b:Jtt0_ temperature contzc4Button lemperatore 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 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.
  • 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-'_ tings. 3, If nonconforming matters occurred are released during display of failure code, MICOM mturos to the odginal state (Reset).
  • 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). Normal : (_) LED on, Abnormal...
  • 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, GEl) converting AG voltage to DC voltage, the switching part (IC2) switching the converted DC voitage, 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 ICl (MICOM). The OSCl must always use rated parts since if SPEC is changed, time calculated at the ICt 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...
  • Page 20 EXPLATION FOR MICOM CIRCUIT 2, Dispenser oper_ion circuit POWlER (AIN14) AUGER MOTOR RY'5 (AINI_) OISPENSE LEVERs_Rw SOLENOID CUB[ CON4 ALD112 (AIN17) ALD112 CON.= R'r]O (MICOM) Q.lU,_+120 SOLENOID DIS_=ENSER ALDl12 PILOT VALVE ® DISP-LAMP ,_- _ t) Check load driving status WATER VALVE GEARED SOLENOID...
  • Page 21 EXPLATION FOR MICOM CIRCUIT 3. Door opening sensing circuit <GR-L207ERA, GR-L247ERA> <GR-B207ERA, GR.B247ERA> rA_oal I,,, _'" __=____ _.CONDITIONS Bell sounds when button on Beep sounds when warning door opening. vlEASURING_ dosplay is pressed. )OINTS ,0.05s, 0.2s ,0.1s, O.4s O.5s ,=!. O.5s '"...
  • Page 22 EXPLATION FOR MICOM CIRCUIT 1-5. Temperature sensing circuit 1) GR-L207ERA, GR-L247ERA CON7 16,2Kr (AINU; 104/7_ D-SENSOR £-SENSOR CCI5_- (A_HS: io_'7 (MICFIM) CON8 26.1KF (AIN2; 104'7 26.1KF ccz__ (AtN3] R2-SENSOR R1-SENSOR tO4-- CON9 RIM1 IB._K_ P6€ CAIN4; cczJ- SENSQR MAKER I(7_F RT-SNR .,21 'o',7...
  • Page 23 EXPLATION FOR MICOM CIRCUIT 2) GR-B207ERA, GR-B247ERA MICOM) CON5 I6,2KP (AJN6 CC17JL 26.1KF D-SENSOR cc_91 (AIN5 F-SENSOR 104f7 _ CON6 26.1K_ (AiN2) '°' ,% R2-SENSOR (AIN3) R1-SENSOR 104f_ 10KF (AIN7) RT-SENSOR CCllJ_lO4n_. 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, iee-makin 9 sensor for sensing water temperature in ice-making, or...
  • 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. 2) GR-B207ERA, GR-B247ERA t) GR-L207ERA, GR-L247ERA S/W1 'MICOM' '°1 l 4.7K 1-7.
  • Page 25 EXPLATION FOR MICOM CIRCUIT 1=8. Stepping motor operation circuit IC10 CON9 TA7774P 9,16 I - + MIC[]M <ICl) STEPPING luF V_ 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 %9. Fan motor driving circuit (freezing room, M/C room) 1. This circuit performs function to make standby power '0' by cutting off power suppfied to ICa inside of the fan motor in the fan motor OFF. 2.
  • Page 27 EXPLATION FOR MICOM CIRCUIT 2) GR-B207ERA, GR-B247ERA CON5 'MICOM) KTA1705 £mq 4.7K R,34 3.9K C-FAN - D13 220 ,uF _'FR102 R33_ __ CC16 /25V C-FAN LOCK IN4735A 6.2V F-FAN Pk#M "_"! "I :;c=1°= "'°_ _T _% F-FAN LOCK 1N4755A 6.2v - 42 -...
  • Page 28 EXPLATION FOR MICOM CIRCUIT 1-10. Temperature compensation and over-cool/weak-cool compens_ion circuit 1. Temperature compensation at freezing room, cold storage room 1) GR-L207ERA, GR-L247ERA l:c°M Temperature coPtpenso._lon R-r'ooM r RC'RT] Tempero.ture cor_pens_±lon at R-rooM IAtNI) 0_K j _'FT7 L_0_K_J 2) GR-B207ERA, GR-B247ERA (MICOM TempePP,_;ure...
  • Page 29 EXPLATION FOR MICOM CIRCUIT • Temperature compensation table at the cold storage room is as follows: r_sl_c:e 470_ 2k_z 3,3k_ 5.6kQ 8.2k_Z 10k_z 12k_ 18k_ 33k_ 56k_ 180k_ 0.5 °C 1 °C _..5"C-- 2 °C 2.5 °C 3 °C 3,5 °C 4 oC 4.5 °C 470_...
  • Page 30 EXPLATION FOR MICOM CIRCUIT %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 dnven by SCAN method. MIC[JM CON101 (ICI)
  • 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) Temperature compensation in CUT JCR1 +1 °C +2 °C JCR2 +1 °C JCR3 -1 °C -2 °C JCR4 -1 °C Compensation 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 ,_ ; Z_,,*-.-..j _ _. _ _ _ ........:7 *| -47 -...
  • Page 33 EXPLATION FOR MICOM CIRCUIT 3-2. Parts list 1. GR-L207ERA, GR-L247ERA _¢m1_ d_<ER n_U_K HTOJBDG14 _,MAIN rk_-1_r_1107A) 00 _ _U271_ _oo_r/2s__ 6_703B2013 1.2: t 74_t 113r41} _AMIL _ANS lUF/50V SSOuF'/25V _o_,_/_v _ h_ 51LIe, JBa_IA _lt-IHape-2} CO_4 --¥ 61_30JmNl0 JE202-1T-11 CCN2 663&_¢01¢...
  • Page 34 EXPLATION FOR MICOM CIRCUIT - 50 -...
  • Page 35 EXPLATION FOR MICOM CIRCUIT 4. P\VB circuit diagram - PWB circuit diagram may vary a little bit depending on actual condition. 1. GR-L207ERA, GR-L247ERA w_4_r _ P_B ASSaY,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. • Waif 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 2-4. ice Ejection Control Function 1. This is to eject ice from ice maker cube mould after ice making is completed. 2. IfHaB 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 possibleto confirmby pressing freezer and refrigerator temperature control buttons for more then 1 second. (ice maker is normalif all ]eds are on): referto troublediagnposis functionin 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 CON9 ICE MAKER SENSOR (^,N4) ICE MAKER STOP S/V TEST S/W ICE MAKER (MICOM) ICE MAKER HOTOR 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 pert of the main PWB.
  • Page 43 TROUBLE DIAGNOSIS 1. TROUBLE SHOOTING CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK • Measunng instrument 1) No power on outlet. 1. Faulty start Multi tester 2) No power on cord. • Check the voltage. Bad connection between adapter and o_let. (faulty adapter) If the voltage is within +_85% The Inner diameter of adapter, of the rated voltage,it is OK.
  • Page 44 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK • Check the clogged 2. NO cooling. 2) Refrigeration system is clogged. evaporator by heating (as Module Residual n:,oL_re AirBlowing. i No_ p eforrr_, soon as the cracking souncl dogged. in_e evaporator.
  • Page 45 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK 3. Refrigeration t) Refrigerant Partly leaked. E weldjeintleal_ is weak. Par_le_ 2) Poor defrosting capacity. • Check visually. -Drain path (pipe) dogged. -InjectP,,Uintodrainhose. I_ Injectlhtot_h_le |L--S_'v, tth drain. [-- pfu_mpinput - Fem.agn mate.ais L- Olber foreignmatedais _put...
  • Page 46 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK 3. Refrigeration Residual Weak heatfrom heater. [-Sheath Heater- rated. is weak, freaL _- H eart,m-rated. L Heater ce_i-L -rated. Badheaterassem_. Hea_plate [Noc_cttodrai_ Looseaedstcppe- c _,d. Heatercond-L_ Not ceatacttothe L Loca_ Ofass_y (top and n_dd_) DefrostSens_ •...
  • Page 47 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS, HOW TO CHECK 3. Refrigeration 4) No cooling air circulation. is weak. •p oarnp_g _pera_cor_ct L Accumulatedresidual f rost [ Faultyfan motor.-- _ F FanshroudcontacL. Cleaan_. Smallcoo_aJr -Insurgent -Fanovedoad.-Fanr'n_L_e. d_schanje, mot_ RPM _- BadlowtefmperatureRPM dnaract_-lics. L RatedI_wer misuse, I__.
  • Page 48 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK 4. Warm 1) Colgged cooling path. refrigerator P/U liquidleak. compartment Foreignmaterials.-- P/U dump liquid. temperature. 2) Food storate. _- Storeho_food. _- Stomtoo m uch atonce. Pad,,ag_ blockar tlow. 5. 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 door. ice formation. Dew on the duct door. - Duct door heater is cut. Dew on the dispense F R_ess Heateris cut. recess. • Ductdoor is open.I Fon_gnmaterial d oggklg. -- Dew on the door surface.
  • Page 50 TROUBLE DIAGNOSIS CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK 7. Sounds 1) Compressor compartment operating sounds. Transformer sou nd. _ _ ownfault -- Core gap. Badcor_ec_n. -- Colrect sorewconnec_n. Drip tray vibration sound,{-Bad assembly Distor_n. _ F_ rnai_Ns inst. Back cover machine 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. Disconnection._ Bad soldering.
  • Page 52 TROUBLE DIAGNOSIS CLAIMS, CAUSES AND CHECK POINTS. HOW TO CHECK 10. Structure, 1)Dog,am. appearance --Sag. Weaktorqueof-- -- Bottisloosened dudng and others, _conned_a. _-ansportabn. -- Net _ h_ fastened. -- Screwworn oct. Weak gasket-- A_'_esion surface. a_nesk_. -- F_edlape, --No_well_xed. Noise during -- Hingeinlefference.-- -- B_gerdoorfoam.
  • Page 53 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 54 2-3. Temperature Measures Problems Checks Remarks Causes - Lock -- Check resistance with a High Poor cool air circulation due to faulty Replace fan motor, tester, fan motor. temperature in the freezer 0_: short. Reconnect and reJnsert. cut. compartment. , - Rotate rotor manually and check rotation.
  • Page 55 2-4. Cooling Measures Problems Causes Checks Remarks Weld the leaking part, recharge the Check seouence Drier must be replaced. High Refrigerant leak. refrigerant. temperature 1. Check the welded parts of the in the freezer drier inlet and outlet and drier compartment.
  • Page 56 Remarks Problems Causes Checks Measures Direr must be replaced. Check sequence. - Heat up compressor discharging High Cycle pipe is clogged. weld joints with touch, disconnect temperature 1, Check temperature of condenser the freezer the pipes, and check the clogging. manually.
  • Page 57 2-5. Defrosting failure Causes Checks Measures Remarks Problems Seal the lead wire with Heater does not generate heat as 1. Check the resistance of heater. Heating wire is short and wire is cut. No defrosting. the heating wire is cut or the circuit 0_: Shod, o_: Cut.
  • Page 58 Problems Causes Checks Measures Remarks No defrosting Melting fuse blows out. - Check melting fuse with tester. - Faul]ty parts: parts replacement. 1) Lead wire is cut. If 0_,_:OK. - Check wire color when maeasuring 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 - Be acquainted with how to use, Icing in the 1) Bad circulation of cool air. - Check the food is stored properly - Sealing on connecting parts. related parts if problem refrigerator - Clogged intake port in the (check discharge and intake port...
  • Page 60 Problems Causes Checks Measures Remarks - Check the parts related ice in the freeze= - Be acquainted with how to use. - Check food storage conditions 1) Bad cooling air circulation. - Check defrost (Check ice on the to defrosting if the compartment.
  • Page 61 2-7. Sound Problems Causes Checks Measures Remarks "Whizz" sound 1.1 Check the level of the t. Loud sound of compressor 1) Maintain horizontal level operaUon, refrigerator. 2) Replace rubber and seat if they 1.2 Check the rubber seat r" 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 ("Cluck") the refrigerator. and insert foam or cushion where shelves in the refrigerator 2. Pipes interference and capillary vibration is severe, 1-2.
  • Page 63 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 ioitial installation. (almoat the same at the end of capillary tube. evaporator and capillarytube weld - Check the sound when the refdgerator joints and attach another restrainer, as animals crying...
  • Page 64 2-8. Odor Problems Causes Cheeks 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. wall are stained with food juice. Store the food in the closed i.
  • Page 65 2-9. Micom Problems Symptom Causes Checks Measures Remarks Bad PCB Aft 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 66 Problems Symptom Causes Checks Measures Remarks Bad cooling. Freezer Compressor does Compressor Lead Wire Reconnect Lead Check compressor Lead Wire not start. temperature is cut. with a tester. Wire. high. Defective compressor Measure voltage at PCB CON5 Replace reiay(RY1 Refer to load driving relay.
  • Page 67 Measures Problems Symptom Causes Checks Remarks Reconnect lead Check AC damper Bad cooling Wrong Defective AC Dampen Check if AC damper motor and motor and reed switch wire. reed switch lead wire are Refrigerator and lead wire are cut. cut with a tester. temperature, Check AC damper Replace AC damper...
  • Page 68 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 69 ,-.I 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 explanations. pressed. Buzzer Defective connecting lead wire from Check lead wire associated with door Door Buzzer...
  • Page 70 TROUBLE DIAGNOSIS 3. Cooling Cycle Heavy Repair 3-1. The Heavy Repair Standards for Refrigerator with R134a Refrk erant 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.
  • Page 71 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 o_land refrigerant tar 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.) R_enser i High pressure side Intake 1) Remove residual refrigerant more than 5 minutes later after turning off the refrigerator.
  • Page 74 TROUBLE DIAGNOSIS items Precautions 4.Vecuum degassing. Evaporalor Suction pi___ Compressor Comp[,__Dder )ressufe High Blue _rl_$ure Yellow 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, (It is low pressure side.
  • 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 ieakage test on the welded parts.
  • Page 76 TROUBLE DIAGNOSIS 3-6. Brazing Reference Drawings PIPEASSY,HOTLINE PIPE ASSY, HOT LINE (Freezer) (RefdgeratoO Copper Brazer Copper CAP] - TUBE DRIER ASSY Copper Brazer Silver Brazer PiPE ASSY PiPE ASSY, SUCTION Copper Brazer CopperBrazer Copper Brazer Coppper 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 pmgedy 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 • Check temperature set in the temperature control knob. Refdgeration is weak. • 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 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 81 TROUBLE DIAGNOSIS 4-5. Others Problems Checks and Measures • Explain the principles of radiator. The refrigerator case is hot. • 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 EXPLODED VIEW FREEZER DOOR PART: GR-P247, GR-P207, GR-L247, GR-L207 - 109 -...
  • Page 83 EXPLODED VIEW Ref No. : GR-L247, GR-L207, GR-B247, GR-B207 REFRIGERATOR DOOR PART * : Optional part -112-...
  • Page 84 EXPLODED VIEW REFRIGERATOR COMPARTMENT $¢ : Optional part - 114 -...
  • Page 85 EXPLODED VIEW ICE & WATER PART : Optional part - 115 -...
  • Page 86 EXPLODED VIEW MACHINE COMPARTMENT * : Optional part -116-...
  • Page 87 EXPLODED VIEW DISPENSER PART tm____._J - 117 -...

This manual is also suitable for:

Gr-l247erGr-l207er