GR-P247C
REFRIGERATOR
SERVICE MANUAL
GR-L247C
Страница 1: ...GR P247C REFRIGERATOR SERVICE MANUAL GR L247C ...
Страница 2: ...unction 13 Chapter 6 Explanation of Micom Circuit 20 1 Explanation of PWB Circuit 20 2 Sensor Resistance Characteristics Table 25 3 Door open Detection Circuit 36 4 PWB Circuit Diagram 39 Chapter 7 Operation Principle and Repair Method of Ice Maker Dispenser 41 1 Operation Principle 41 2 Function of Ice Maker 42 3 Diagnosis of Ice Maker Failure 45 4 Circuit Part of Ice Maker 46 Chapter 8 Compresso...
Страница 3: ...hen violating instructions Be cautious of electric shock Control board PWB Main and Sub uses power supply of about 310V Check that power plugs are not pressed by the rear side of refrigerator Damage of power plugs could result in fire or electric shock Use dedicate socket for power socket Inserting various products into a power socket at the same time for use could result in fire due to overheat o...
Страница 4: ...unexpected reaction Inputting products requiring strict temperature control may result When getting refrigerator away remove its door and do not leave refrigerator at a place where children play If children go in it and are entrapped in it it is dangerous Take power plugs from socket for cleaning or repair In addition plug out or plug in with the wet hands Electric shock or harm may occur Firstly ...
Страница 5: ...ere is danger of fire since it is inflammable material Leave fire appliances at a remote location There is danger of fire Do not touch a refrigerator or socket when gas leaks and open the door for ventilation There is danger of burning due to explosion and sparking Do not spray inside or outside of the refrigerator Bad insulation of electrical part may result in electric shock or fire Do not use a...
Страница 6: ...is firmly suspended Do not damage process or forcedly bend take out or twist power cords Damage of power cords may cause fire or electric shock Entirely remove dusts or foreign materials from housing part wiring part and checking part etc for failure repair Danger of fire can be prevented from tracking short etc Check assembling status of parts after failure repair Parts should show same status be...
Страница 7: ...o not install product at a place with much moisture and where water spatters Deterioration of insulation may cause electrical leakage Transport product catching with handles on the bottom side and the top side when transporting damaged since the hands are slipped Danger of fire can be prevented from tracking short etc If not catching with handles you can be Do not touch foods or vessels made of me...
Страница 8: ... maker door ice maker 35 special R Room Fixed drawer Shelf Egg container Vacuum shielding vegetable room Vegetable room Outer dimension W x D x H Rated voltage and frequency Product weight kg Rated consumption power of motor Cooling method Total inner capacity L F Room R Room GR P247C Model Name Divison Freezing cycle Electrical parts standard Ice and water dispenser Compressor driving method Evap...
Страница 9: ... ice maker 35 special R Room Fixed drawer Shelf Egg container Vacuum shielding vegetable room Vegetable room Outer dimension W x D x H Rated voltage and frequency Product weight kg Rated consumption power of motor Cooling method Total inner capacity L F Room R Room GR L247C Model Name Divison Freezing cycle Electrical parts standard Ice and water dispenser Compressor driving method Evaporator Cond...
Страница 10: ...10 Circuit Diagram MODEL GR P247C GR L247C Chapter 3 Circuit Diagram ...
Страница 11: ...n space Model Model Width A When opening door by 90 including handle B Case including back handle C After disassembling door including hinge L D Including door not including handle E Including handle F When opening door by 90 G Cabinet H Including cover PWB J Including door K Top part Side Rear part GR P247C GR L247C 910 1126 615 638 715 788 1156 5 1750 1784 1785 300 20 50 Unit mm Front View Plane...
Страница 12: ...over Hinge Cover PWB Door Ice maker Oil Product Corner R Room Shelf Mobile Egg Vessel R Room Basket R Room Home Bar Fresh Vegetable Room Cover Fresh Vegetable Room Vacuum Shielding Type of Vegetable Room Fresh Vegetable Room Cover R Room Basket Fresh Vegetable Room Nano Hardwood Charcoal Deodorization F Room Shelf F Room Drawer F Room Basket ...
Страница 13: ...B Door Ice maker Oil Product Corner R Room Shelf Mobile Egg Vessel R Room Basket Fresh Vegetable Room Cover Fresh Vegetable Room Vacuum Shielding Type of Vegetable Room Fresh Vegetable Room Cover R Room Basket Fresh Vegetable Room Nano Hardwood Charcoal Deodorization F Room Shelf F Room Drawer F Room Basket ...
Страница 14: ...tivate and again to deactivate the function 2 Display Power saving Mode If there is no entry 20 60 seconds after the power of the display is turned on 60 seconds if no button is pressed after the power is turned on and 20 seconds when a button is pressed it automatically switches to the power saving mode to display only the current selection of dispenser and lock status All icons on the display wi...
Страница 15: ...ivision Change of Indication Lamp Type 1 88 LCD Power Initially On 4th Press 5th Press 6th Press 7th Press 1st Press 2nd Press 3rd Press Refrigeration Control 3 6 5 4 3 2 1 0 3 6 5 4 3 2 1 0 1 The actual inner temperature varies varies depending on the food status as the indicated setting temperature is a target temperature not actual temperature within refrigerator 2 Refrigeration function is wea...
Страница 16: ... compartment 2 4 Express freezing 1 Express freezing is function to improve cooling speed of the freezing room by consecutively operating compressors and freezing room fan 2 Express freezing is released if power failure occurs and then returns to the original status 3 Temperature setting is not changed even if selecting the express freezing 4 The change of temperature setting at the freezing room ...
Страница 17: ...t 2 6 Control of M C room fan motor 1 The M C room fan motor performs ON OFF control by linking with the COMP 2 It controls at the single RPM without varying RPM 3 Failure sensing method is same as in fan motor of freezing fan motor refer to failure diagnosis function table for failure display 2 7 Door opening alarm 1 Buzzer generates alarm sound if doors are not closed even when more than a minut...
Страница 18: ...AL ICE MAKER SENSOR 14 ABNORMAL ICE MAKER UNIT 15 ABNORMAL WATER TANK SENSOR NO DETROST NO DETROST OFF RE INSPECTS AFTER 30 MINUTES OFF RE INSPECTS AFTER 30 MINUTES OFF RE INSPECTS AFTER 30 MINUTES DEFROST HEATER TEMPERATURE FUSE SHORT CIRCUIT UNPLUGGED CONNECTOR INDICATED 4 HOUR LATER AFTER TROUBLE MORTOR DEFECT HOKED OF LEAD WIRE TO FAN CONTACT OF STRUCTURE WITH FAN SHORT OR OPEN OF LEAD WIRE TH...
Страница 19: ... COMPRESSOR AND CONDENSER FAN MOTOR 2 ALL DEFROST HEATERS TURNS OFF 3 10 MINUTES IN EARLY STAGE REFRIGERATOR FAN MOTOR ON 4 AFTER 10 MINUTES ALL FAN MOTORS ON WHEN THE FREEZER SENSOR IS ABOVE 5 C AND REFRIGERATOR SENSOR IS ABOVE 15 C 5 JUST REFRIGERATOR FAN MOTOR ON WHEN THE FREEZER SENSOR IS BELOW 14 C AND REFRIGERATOR SENSOR IS ABOVE 1 5 C 6 REMAINING CONDITION FREEZER FAN MOTOR ON FREEZER FAN M...
Страница 20: ... motor and solenoid cube water However the solenoid duct door stops when 5 seconds pass after turning off This is for preventing coil short due to heating of solenoid 5 Dispenser Lamp On Off Function If pressing the Dispenser Pressing Switch after selecting ice cube ice crushed ice or water the lamp on the dispenser part turns on and if releasing it turns off 6 Water Crushed Ice Cube Select Functi...
Страница 21: ...water supply operation is completed and performs Ice making Complete Operation by detecting temperature of the ice maker container with an ice making sensor Ice making sensor is mounted on the bottom of the ice maker container 2 ce making control starts after completing water supply control or initial control 3 It is determined ice making is done if temperature of ice making sensor reaches to 8 af...
Страница 22: ...second if Hall IC signal changes from OFF low to ON high after 3 6 seconds when ice ejection motor rotates in normal direction If there is no change in Hall IC signals within 1 minute after ice ejection motor operates ice ejection motor stops as ice ejection motor or hall IC is out of order 5 If ice ejection motor or Hall IC is abnormal ice ejection motor rotates in normal direction to exercise in...
Страница 23: ...ration and water supply using a test switch Buzzer sound Ding occurs to perform water supply control function if test function is normally performed So if buzzer sound Ding does not occur it means failure to require repair 4 If water supply function is completed normal cycle of Ice making ice separation return to horizontal status and water supply is operated 5 Lift ice up and press the test switc...
Страница 24: ...horizontal status by an ice separation motor Defect of power terminal Replace Main PWB Replace ice making sensor Replace Ice Maker Unit Replace Ice Maker Unit Replace water supply valve Replace Main PWB No Yes Yes Yes No No No Yes Yes No Check DC power 5V 12V Defect of ice making sensor Check resistance value at the both ends 1 2 of the ice making sensor of CON13 Defect between ice making sensor a...
Страница 25: ... all both sides of 3way valve Leave doors of a refrigerator so that they are not closed Connect pinch pliers with a refrigerant discharging hose Place the outlet of a refrigerant discharging hose outside Remove fire appliances or heating sources near a refrigerant discharging hose Always use a refrigerant returnbag for working at the contained space Bore the charging pipe of a compressor with pinc...
Страница 26: ... returnrefrigerant remained in the pipe Vacuum working time should be for more than 10 minutes Suction Pipe Vacuum Pump Discharge refrigerant outside using window or door Pinch Plier Process Pipe Discharge Pipe 2 3 Welding Repair Step Required equipment Simple welding machine Remove pinch pliers if remaining refrigerant returnis completed Cut the front part of a process pipe with a cutter Check th...
Страница 27: ...e R600a refrigerant after completing work and then connect a charging tube with welding Charging Tube Suction Pipe Discharge Pipe 2 5 Vacuum Air Removal Required equipment Vacuum pump Connect a vacuum pump to a charging tube to perform vacuum cycle Vacuum work should be performed for an hour If vacuum time is short normal cooling performance may not be exerted due to failure of cooling cycle ...
Страница 28: ...tor to operate a compressor Measure Bombe weight after 5 through 10 minutes to check remained refrigerant quantity to complete charging of refrigerant After charging refrigerant never perform welding work or work using fire appliances Charging Tube Suction Pipe Discharge Pipe 2 7 Leak Inspection and Cycle Check Required equipment Leakage checking machine foam and leakage inspection machine Check f...
Страница 29: ...akage of 3way valve Clogged capillary tube Leakage of 3way valve Non insertion of valve housing Short circuit of valve L wire Defect or shortage of valve Defect or shortage of PCB Leakage of welding part Check of leakage part Leakage of radiator Poor operation of 3way valve Leakage of refrigerant Normal Clogged cycle Somewhat cold Moisture clogged Check of cooler at F Room R Room ...
Страница 30: ...ng heat is delivered to a pipe during welding for repair and replacement of the valve welding part So perform service in following service method 1 Replace 3wasy valve ASSY where refrigerant leakage occurs at the joint pipe ⓐ ⓑ ⓒ part connected with the service valve of valve welding part For unavoidable welding wrap the body part of valve with a water towel so that delivery of welding heat is min...
Страница 31: ...Off Tip To protection of MICOM Reconnect Reconnect CON7 and Power ON If the same situation appears Replace the main PCB Otherwise explain to the customer Disconnect CON7 and measure the value Is resistance value between pins 1 2 of CON7 as below GY to GY Replace F sensor No Yes No Yes Yes Test Point Pin1 to Pin2 Result 1 4 120 Pin2 Pin1 ...
Страница 32: ...n of MICOM Reconnect Reconnect CON8 and Power ON If the same situation appears Replace the main PCB Otherwise explain to the customer Disconnect CON8 and measure the value Is resistance value between pins 3 4 of CON8 as below WH to WH Replace R sensor No Yes No Yes Yes Pin4 Pin3 Test Point Pin3 to Pin 4 Result 6 300 ...
Страница 33: ...n of MICOM Reconnect Reconnect CON8 and Power ON If the same situation appears Replace the main PCB Otherwise explain to the customer Disconnect CON8 and measure the value Is resistance value between pins 5 6 of CON8 as below GY to GY Replace R sensor No Yes No Yes Yes Pin5 Pin6 Test Point Pin3 to Pin 4 Result 6 300 ...
Страница 34: ...Power ON Pin3 to Pin 4 Test Point 6 400 Result If the same situation appears Replace the main PCB Otherwise explain to the customer Disconnect CON6 and measure the value Is resistance value between pins 7 8of CON6 as below WH to WH Replace R sensor No Yes Power Off Tip To protection of MICOM No Yes Yes Pin8 Pin7 ...
Страница 35: ...measure resistance value between pins 1 2 of Housing A as below GY to GY Replace I Maker No Replace I Maker No Yes Yes Is the connection loose CON13 Power Off Tip To protection of MICOM Reconnect CON13 and Power ON Yes Yes Pin1 to Pin 2 Test Point 6 150 Result If the same situation appears Replace the main PCB Otherwise explain to the customer No Ice maker Sensor Error Pin2 1 2 Pin1 ...
Страница 36: ...herwise explain to the customer Replace a D Sensor No Yes Yes Is the connection loose CON7 Yes Replace D_Sensor Power Off Tip To protection of MICOM Disconnect CON7 and measure the value Is resistance value between pins 3 4 of CON7 as below BO to BO NO Pin3 to Pin 4 Test Point 6 300 Result Pin1 to Pin2 Test Point 1 156 141 5 Result No Yes Freezer Defrost Sensor Error Pin4 Pin3 Pin2 Pin1 ...
Страница 37: ...wise explain to the customer Replace a D Sensor No Yes Yes Is the connection loose CON8 Yes Replace D_Sensor Power Off Tip To protection of MICOM Disconnect CON8 and measure the value Is resistance value between pins 7 8 of CON8 as below BO to BO NO Pin7 to Pin 8 Test Point 6 300 Result Pin1 to Pin2 Test Point 1 156 141 5 Result No Yes Refrigerator Defrost Sensor Error Pin4 Pin3 Pin2 Pin1 ...
Страница 38: ...Is the voltage value between pins 6 BL WH and 5 BN of CON3 230 V AC Enter the TEST 1 MODE Is the voltage value between pins 6 BL WH and 5 BN of CON3 0 V AC Relay operation Replace MAIN PCB No Replace MAIN PCB No Yes Yes Is the connection loose CON3 Yes Yes Pin1 To Pin5 Test Point 0 2V Result Relay Open No CON7 Pin5 Pin6 Pin5 Pin6 ...
Страница 39: ...re Explain to the customer It can be occurred when the gasket is not stuck to product or when you put the high temperature loads hot foods a lot in the product Resistance Replace Heaters No Replace DEF sensor No Yes No Replace Fuse M No Yes 1 To 2 Test Point 230 260 Ω Result Heater Resistance 30 20 10 0 Test Point 129 3 76 96 47 34 30 Result 10 20 30 40 Test Point 19 53 13 03 8 896 6 201 Result De...
Страница 40: ... MODE Is the voltage value between pins 5 BL and 3 BN of CON4 230 V AC Enter the TEST 1 MODE Is the voltage value between pins 5 B and 3 BN of CON4 0 V AC Relay operation Replace MAIN PCB No Replace MAIN PCB No Yes Yes Is the connection loose CON4 Yes Yes Pin3 To Pin5 Test Point 0 2V Result Relay Open No CON6 Pin3 Pin5 Pin3 Pin5 ...
Страница 41: ...e Explain to the customer It can be occurred when the gasket is not stuck to product or when you put the high temperature loads hot foods a lot in the product Resistance Replace Heater No Replace DEF sensor No Yes No Replace Fuse M No Yes 1 To 2 Test Point 250 330 Ω Result Heater Resistance 30 20 10 0 Test Point 129 3 76 96 47 34 30 Result 10 20 30 40 Test Point 19 53 13 03 8 896 6 201 Result Defr...
Страница 42: ... motor Connector Frozen Locked No Replace Main PCB No Yes Yes Is the connection loose Yes Replace MAIN PCB Reset and Enter the TEST 1 MODE Is the output voltage between pin11 and pin12of CON7 like as below NO Yes Explain to the customer Pin11 To Pin12 Test Point 12 16 V Result Freezer Fan Voltages Pin10 To Pin11 Test Point 1 4 V Result Feedback Voltages No Yes Freezer Fan Error Pin10 Pin11 Pin12 P...
Страница 43: ... motor Connector Frozen Locked No Replace Main PCB No Yes Yes Is the connection loose Yes Replace MAIN PCB Reset and Enter the TEST 1 MODE Is the output voltage betwee n pin2 and pin3 of CON12 like as below NO Yes Explain to the customer Pin2 To Pin3 Test Point 12 16 V Result Freezer Fan Voltages Pin10 To Pin11 Test Point 1 4 V Result Feedback Voltages No Yes Refrigerator Fan Error Pin1 Pin2 Pin3 ...
Страница 44: ...ctor Locked mouse No Replace MAIN PCB No Yes Yes Is the connection loose Yes Replace MAIN PCB Reset and Enter the TEST 1 MODE Is the output voltage between pin7 and pin8 of CON7 like as below NO Yes Explain to the customer Pin7 To Pin8 Test Point 12 16 V Result Condenser Fan Voltages Pin8 To Pin9 Test Point 1 4 V Result Feedback Voltages No Yes Condenser Fan Error Pin8 Pin9 Pin8 Pin7 ...
Страница 45: ...s Reconnect No No Yes Is the connection loose Yes Replace Display PCB Is the output voltage between pin4 and pin5 of CON101 like as below YES Yes Pin4 To Pin5 Test Point 0 5V Result Display PCB Voltages pin3 To pin5 Test Point 0 5 V Result Display PCB Voltages No CON6 No Communication Error Is the connection loose Hinge Reconnect No Yes Pin3 Pin5 Pin5 Pin4 ...
Страница 46: ...in5 of CON6 like as below Receiver Voltages Replace Main PCB No Test Point Pin4 To Pin5 Result 0 5 V Pin5 Pin4 Pin5 Pin4 Is the output voltage between Pin4 and pin5 of CON6 like as below Explain to the customer Trans mi tt er Voltages Replace Main PCB Yes Test Point Pin4 To Pin5 Result 0 5 V No ...
Страница 47: ...he value Is resistance value between pins 9 10of CON6 as below GY to GY Replace a WT Sensor No Yes Yes Is the connection loose CON6 Power Off Tip To protection of MICOM Reconnect CON6 and Power ON It can be occurred Replace the main PCB Otherwise explain to the customer Yes No Water Tank Sensor Error Pin10 Pin9 ...
Страница 48: ...zer room Replace ICE Maker Unit Yes No Yes Is the connection loose CON13 Yes Replace the Main PCB Is the voltage between pins 9 and pin 10 of CON13 5V 12V NO Ex plain to the customer Pin9 To Pin10 Test Point 5 12 V Result Motor Receiver Vol tages No Yes Ice Maker KIT Error Pin10 Pin9 ...
Страница 49: ...k Is the connection loose CON10 Is the connection loose CON3 Reconnect Is the condition of the micro switch like as below Replace Micro Switch No No No Yes Reconnect Yes Yes 1 2 Status Normal Push the Lever Teste Infinity 0 Ω ...
Страница 50: ... Main PCB Pushing Normal Level switch Pin2 To Pin7 Pin2 To Pin7 230 V 0 2V Test Point Result Is the resistance value between 1 and 2 of the Auger motor like as below After plug in explain to the customer Output voltage of auger motor Replace Auger Motor No Yes No Reconnect Yes 1 To 2 Test Point 12 3 15 1 Ω Result Yes No Is the connection loose Reconnect Yes No 1 2 ...
Страница 51: ...k Is the connection loose CON10 Is the connection loose CON3 Reconnect Is the condition of the micro switch like as below Replace Micro Switch No Yes No Yes Reconnect Yes Yes 1 2 Status Normal Push the Lever Teste Infinity 0 Ω ...
Страница 52: ...ormal Level switch Pin2 To Pin7 Pin2 To Pin7 230 V 0 2V Test Point Result Is the connection loose Hinge Is the connection loose Is the resistance value between 1 and 2 of the Auger motor like as below Output voltage of auger motor Reconnect Yes Reconnect Yes Replace Auger Motor No No No RePlace Main PCB No Pushing Normal Level switch Pin2 To Pin8 Pin2 To Pin8 230 V 0 2V Test Point Result Output vo...
Страница 53: ...he resist ance value between 1 and 2 of the Cube solenoi d li ke as below After plug in explain to the customer Replace Cube Solenoid 1 To 2 Level switch 156 8 173 3 Ω Test Point Resistance of Cube solenoid No Yes ...
Страница 54: ... like as below Replace Micro Switch No Yes Is the connection loose CON10 Yes Water Mode Doesn t work Reconnect Is the connection loose CON10 Yes No No Reconnect Is the connection loose CON3 Yes 1 PK 2 YL Normal Push the Lever Status Infinity 0Ω Tester ...
Страница 55: ...0 TestPoint Yes Water Valve Is the resistance value of Water Valve like as below After plug in explain to the customer Replace Water valve No 1 2 Yes In Crush Mode s the voltage between pin2 and pin11 of CON3 ike as below while pushing the lever switch Output voltage of Pilot valve Replace Main PCB No Pin2 Pin11 CON4 Pushing Normal Level switch 230 V 0 2 V Result Pin2 To Pin11 Pin2 To Pin11 TestPo...
Страница 56: ...ise of COMP and discharge outlet 2 Check whether the C FAN is operating Measuring POINT PS Check the voltage during C Fan operation About AC 10V AC 230V BLACK RED OR BLACK BLUE 3 Check the COMP connector voltage Measure without pulling the HOUSING When the COMP FAN are not operating simultaneously force operate from the MAIN PCB in TEST MODE to check whether it is operating and then check the powe...
Страница 57: ...he same symptom occurs again after taking action for 2 replace the COMP component 7 LED blinking 7 time repeatedly Blink Blink Blink Blink Blink Blink Off Blink Blink Blink Blink Blink Blink Off Repeat PCB part defect IPM 1 After resetting the power check normal operation 2 When the same symptom occurs again after taking action for 1 replace the PCB 8 LED blinking 8 time repeatedly Blink Blink Bli...
Страница 58: ...u should put in the TPA again AC TPA DC TPA 3 How To Start Test Mode Push the TEST button on the Main PWB You can start the TEST MODE 2 Wire Color BL Blue WH White BO Bright Orange BK Black BN Brown PR Purple RD Red GN Green SB Sky Blue GY Gray PK Pink 1 time TEST BUTTON 2 times ...
Страница 59: ...59 EXPLODED VIEW FREEZER DOOR PART GR P247C GR L247C 200A 202A B06 244A 203A 210B 210C 606A 614A 600A 610A 611B 612A B06 Optional part ...
Страница 60: ...60 EXPLODED VIEW DISPENSER PART GR P247C GR L247C 275A 405A 276A 276B 279A 402C 279J 279H 278B 279I 402C 501D 279B 278D 281B 279C 501A 281A 402C Optional part ...
Страница 61: ...62 EXPLODED VIEW REFRIGERATOR DOOR PART GR L247C 241A 230A 212G B06 233A 244A B06 242B 240A 240A 240A 242A 241B 241C 232A Optional part 147A ...
Страница 62: ... L247C 625A 616F 616G 627A 270E 271A 402A 135E 135F 128D 128F 105D 105C 105B 103A 623B 400B 128E 302B 128C 620A 619A 621A 408B 312A 126A 126B 504B 125B 120C 120D 135A 135J 120B 120B 120B 130A 135B 135D 404A 607B 607A 272A 101A 270A Optional part 271B ...
Страница 63: ...GR L247C 624D 624B 624E 624C 624A 270D 270B 101B 271C 135E 135F 302C 316B 400A 272B 408A 504A 164D 163F 167A 165B 165C 163G 163A 163I 165A 164D 163H 166A 140A 150A 140A 135K 154E 154D 140A 154C 168A 312B 103A 402A 152A 271B 135H 135C 135G Optional part ...
Страница 64: ...LODED VIEW MACHINE COMPARTMENT GR P247C GR L247C 406A 502A 303C 303E 304A 300A 307A 317A 317B 316A 307A 619B 306A 305A 305C 305B 305C 305B 308A 308B 403B 104A 301A 140B 313A 410L 500A 502B Optional part 303A ...
Страница 65: ...66 P No MFL57671903 APRIL 2009 Printed in Korea ...
