REFRIGERATOR SERVICE MANUAL
Contents
1. Idee tte atttem datu e 9 O P OVEREOAD PROTEGTOR tte t te tite abet ie te f d ei bte o ous 10 COVER PIG ete ted cet eedem tete ded 10 5 CIRCUIT DIAGRAM iiec rimi Ca iuc a Tl xac a do BAD DEA c B v RR dd wadarin EN D PR d 11 6 TROUBLESHOOTING nct riens id cram du Lan Va DN RC LS Ru BK D A ERE d Ru 12 17 COMPRESSOR AND ELECTRIC 5 12 PTC AND OLP geht estet eei e E e dei bata dE 13 OTHER ELECTRICAL COMPONENTS eret neg ee 14 SERVICE DIAGNOSIS GHABRT p ertt mee etim peed a 15 REFRIGERATION GYGOLE 2 e n ptt ki e dedi ee tog m eee MR etm eee 16 17 OPERATION PRINCIPLE amp REPAIR METHOD OF ICEMAKER 2 enenatis 18 21 8 DESCRIPTION OF FUNCTION amp CIRCUIT OF 1 1 22 33 9 EXPLODED VIEW REPLACEMENT PARTS LIST 34 SAFETY PRECAUTIONS Please read the following instructions before servicing your refrigerator 1 Check the refrigerator for current leakage 7 Close the top door before opening the bottom door 2 To prevent electric shock unplug before servicing Otherwise you might hit your head when you stand up2. CAUTION Use the part number to order part not the position number DOOR PARTS on some models A only for the service 37 EV CAUTION Use the part number to order part not the position number DISPENSER PARTS 38 EV EN PAN M X iy 2 S C CAUTION Use the part number to order part not the position number ICE amp MAKER PARTS 39 LG Electronics Inc P No 3828JL8066B FEB 2005 Printed in Korea
3. Advise customer that power supply needs to be checked by an electrician Check Check resistance gt resistance of between M C S C and Motor M S in Motor Open or short Replace Compressor Compressor Check Check resistance of resistance of two terminals in Reference 12 PTC Starter PTC Starter Check resistance of two terminals in OLP Check OLP Reference Page12 The range of resistance is between 1 50Q ok Check the power supply under load Compressor attempting to re start after being off for 5 minutes Check starting state YES YES Did compressor start Supply voltage rating with 10 12 Compressor is OK Replace the compressor it 6 2 PTC AND OLP Observation value is 115V 60Hz 6 803096 Normal operation of Compressor is impossible or poor Separate PTC Starter from Compressor and measure resistance between No 5 and 6 of PTC Starter with a Tester Figure 20 Replace PTC Starter The resistance value is OQ short or open Shows continuity Separate OLP from Compressor and check resistance value between two terminals of OLP with a Tester Figure 21 Check another electric component Replace OLP Figure 21 13 6 3 OTHER ELECTRICA
4. e VMAER W VALVE IN THE MACHINE ROOM DISPENSER DOOR S W F Tt cm DOOR S W R FUSE M 72 C R DOOR HEATER m FRONT HEATER L DOOR HEATER HEATER SHEATH DISPENSER W VALVE IN THE MACHINE ROOM ICE SENSOR ICE MAKER MOTOR g I COMP EARTH LLL PTC STARTER ES E3 88 bE PWB PCB ASSEMBLY ICE MAKER ICE MAKER PART P T C START OPTION LG COMP MATSUSHITA COMP EMBRACO COMP Es PLUG TYPE ICE MAKER PART CAPACITOR PART DISPENSER PART AND COMP EARTH PART ON CIRCUIT DIAGRAM ARE SUBJECT TO CHANGE IN DIFFERENT LOCALITIES AND MODEL TYPE CON1 BK BLACK BN BROWN RD RED BO BRIGHT ORANGE YL YELLOW GN GREEN WH WHITE PK PINK GY GRAY PR PURPLE SB SKY BLUE BL BLUE 3854JD1097B 11 6 TROUBLESHOOTING 6 1 COMPRESSOR AND ELECTRIC COMPONENTS ID Power Source Remove PTC Starter Rated Voltage YES from Compressor and 10 measure voltage between Terminal C of Compressor and Terminal 5 or 6 of PTC YES No Voltage OLP disconnected Replace OLP NO Check connection condition Reconnect Applied voltage isn t in acceptable range 115V 10
5. To measure outputs of the control board check voltages between the pins for the following components Circuit Pin Number Pin Number Output Voltage Compressor Con2 pin11 Cont pin1 115 VAC Condenser fan Con2 pin11 1 pin1 115 VAC Defrost heater Con2 pin9 1 pint 115 VAC F R lamp Con2 pin 3 5 Cont pint 115 VAC Water valve Con2 pin7 Cont 115 VAC Dew heater Con2 pin3 Cont pint 115 VAC Water valve Con2 Cont pint 115 VAC NOTE When the door of the freezer refrigerator is left open for 7 minutes or longer the lamp of the freezer refrigerator turns 2 Fan motor driving circuit freezing compartment fan 1 amp 2 of con4 MOTOR OFF 2V or less MOTOR ON 13V 15V 28 3 Open Door Detection Circuit Check CON4 4 REFRIGERATOR DOOR 5 SWITCH 5 6 B FREEZER DOOR 5 6 SWITCH 8 2 3 Temperature Sensor Circuit Pin 4 amp 5 of con4 Ref Door Freezer ocation Pin 5 amp 6 of con5 Fre Door Refrigerator Door Closed OV Open 5V CON5 12 T FREEZER SENSOR 10L eze 9 REFRIGERATOR SENSOR 8 DEFROST SENSOR UI CON6 ROOM TEMPERATURE SENSOR m 8 RESISTANCE OF FREEZER RESISTANCE OF REFRIGERATOR amp SENSOR DEFROST SENSOR amp ROOM SEN
6. Dairy Bin Refrigerator Light Egg Box Shelves Modular Door Bins Modular Door Bin Wine Holder Optibin Crisper Keeps fruits and vegetable fresh and crisp Modular Door Bin Cover Front Glide N Serve Customcube Icemaker Pull out Drawer Ice Bin Durabase Freezer Door Rack Divider LRFD25850 Only 3 DISASSEMBLY 3 1 REMOVING AND REPLACING REFRIGERATOR DOORS e Removing Refrigerator Door A CAUTION Before you begin unplug the refrigerator Remove food and bins from doors gt Left Door Disconnect water supply tube by pushing back on the disconnect ring 4 2 Open door Loosen top hinge cover screw 1 Use flat tip screwdriver to pry back hooks on front underside of cover 3 Lift up cover Disconnect door switch wire harness 2 Remove cover Attach the tube on the door with door Pull out the tube Disconnect the three wire harnesses 5 Remove the grounding screw 6 Rotate hinge lever 7 counterclockwise and remove Lift top hinge 8 free of hinge lever latch 9 A CAUTION When lifting hinge free of latch be careful that door does not fall forward 8 Lift door up from middle hinge pin 10 and remove door 9 Place door inside facing up down onto a non scratching surface gt Right Door 1 Open door
7. Key and LOCK KEY at the same time for 3 seconds in TEST MODE 3 OR Push TEST S W once in TEST MODE 3 Before TEST MODE MODE MANIPULATION CONTENTS REMARKS TEST1 Push Express Freezing 1 Continuous operation of the Key and LOCK KEY at the COMPRESSOR and the Freezer fan same time for 3 seconds 2 Stepping DAMPER OPEN OR Push TEST S W on 3 Defrosting HEATER OFF the main Board once 4 DISPLAY LED all ON TEST2 Push Express Freezing 1 Continuous operation of the Key and LOCK KEY at the COMPRESSOR and the Freezer fan same time for 3 seconds 2 Stepping DAMPER CLOSE in TEST MODE 1 OR 3 Defrosting HEATER OFF Push TEST S W once in 4 DISPLAY LED shows no 2 TEST MODE 1 TESTS Push Express Freezing 1 COMPRESSOR and the Freezer fan Reset if the Key and LOCK KEY at the OFF Temperature of the same time for 3 seconds 2 Stepping DAMPER CLOSE Defrosting Sensor is in TEST MODE 2 OR 3 Defrosting HEATER ON 46 F 8 C or more Push TEST S W once in 4 DISPLAY LED shows no 3 TEST MODE 2 Reset Push Express Freezing Reset to the previously setting The compressor will Start after a 7 minute Delay Freezer Fan RPM Variable Check In case the freezer fan is in operation when the express freezer button and freezing temp button Control are pressed for more than one second at the same time freezer fan RPM changes for example if high speed to normal speed or if normal speed to high speed for 30 seconds After 30 seconds it turns to
8. 2 Turn upper gasket bracket spring so that the spring ends are in the door channel 3 Push in clip until you hear it snap securely into place Gasket 1 Bracket Clip Spring Door Frame Correct Incorrect Figure 4 4 Push in remaining two clips until you hear each snap securely into place Note Make sure that no part of gasket bracket edge protrudes from beneath door frame edge 2 Insert gasket into channel 1 Snap gasket assembly into the door bracket Inserting the Gasket Assembly into the Bracket Door gt P Correct Incorrect Figure 5 2 Press gasket into channels on the three remaining sides of door Figure 6 3 Replace door frame cover Starting at top of cover and working down snap cover back into door Figure 7 3 3 TO REMOVE THE DISPENSER 1 Use fiat tip screwdriver to pry back hooks on botton underside of cover dispenser Figure 8 2 Pry off cover dispenser Figure 9 Disconnect wire harness 3 Replace cover dispenser in opposite manner and order of removal 3 4 DOOR ALIGNMENT If the space between your doors is uneven follow the instructions below to align the doors 1 With one hand lift up the door you want to raise at middle hinge 2 With other hand use pliers to insert snap ring as shown 3 Insert additional snap r
9. L CONS J0 pe R31 Connector1 Connector6 Connector5 S W ais DISPLAY RT SNR STEP MOTOR F DOOR D SNR R SNR F SNR 8 1 CONG Df p I8 gt RRI eeo OO J10 R21 7 CONS O 0 J07 109 0 eo RTI R30 RIG m R37 R39 OO R21 R20 07870 ces gt 05 o o ojo cc o o ces 1 cce 1 2 o o oo RCRI ONO OANA O 4 90 osci cc 1 I7 07 RYS 4 AT CONS FD HTR VALVE II COMP DEF HTR WATER VALVE Connector3 Connector2 33 EV 9 EXPLODED VIEW amp REPLACEMENT PARTS LIST CAUTION Use the part number to order part not the position number CASE PARTS ition number FREEZER PARTS CAUTION Use the part number to order part not the posit EV
10. ES HALL IC I You can confirm Hall Ic detection of position 3 detection of position Two seconds after detection of initial 4 VALVE position you can confirm that valve is on Tes HALL IC II You can check whether hall is sensing Full 5 detection of full ice condition If there is a full filled error the filled Ice fifth LED is not on 6 Reset Return to Status prior to Five seconds after fifth stage is completed TEST MODE the icemaker resets to initial status 7 3 DEFECT DIAGNOSIS FUNCTION 7 3 1 ERROR CODES shown on Ice Maker water supply control panel NO DIVISION INDICATOR CONTENTS REMARKS Mark time to Display switch 1 Normal supply operates properly Ice Making Make sure that the wire 2 Sensor Open or short circuited wire on each sensor is malfunction connected Ice Maker Kit When ejector blades don t reach Check 3 malfunction park position over 18 minutes after HALL IC MOTOR Harvest Mode starts HEATER RELAY ERROR indicators in table can be checked only in TEST mode 21 8 DESCRIPTION OF FUNCTION amp CIRCUIT OF MICOM 8 1 FUNCTION 8 1 1 Function 1 When the appliance is plugged in it is set to 37 F for Refrigerator and 0 F for freezer You can adjust the Refrigerator and the Freezer control temperature by pressing the ADJUST button 2 When the power is initially applied or restored after a power failure it is automatically
11. characteristics part number part number plated steel Heater support plated steel 4 Heater resistance alloy N Disc thermostatic alloy 2 Movable arm spring temper o 1 copper alloy o Contact movable silver on copper 8 Contact stationary silver on copper Slug plated steel Cover polyester UL 94 V Orated 2 Pin connector plated copper alloy To engage 2 33 2 66 mm dia pin Figure 19 4 4 TO REMOVE THE COVER PTC 1 Remove the Cover Back M C 2 Disconnect two housing upper side of comp connected in 3 Loosen two screws on comp base of lt 4 Use a L shaped flap tool to pry off the cover 5 Assembly in reverse order of disassembly 10 5 CIRCUIT DIAGRAM LG Electronics CIRCUIT DIAGRAM PWB PCB ASSEMBLY DISPLAY STEPPING MOTOR DEF SENSOR R SENSOR PUMP S W um F SENSOR B PERCEPTION SW B PERCEPTION S W pua SENSOR PWB PCB ASSEMBLY MAIN POWER SUPPLY CORD
12. is heard and frost forms than ambient refrigerant m Refrigerator don t in inlet only temperature The capillary tube is faulty m cool normally lt WHOLE Freezer Flowing sound of refrigerant Equal to ambient Normal discharging of the Z CLOG compartment and is not heard and frost isn t temperature Refrigerant e Refrigerator don t cool formed MOISTURE Cooling operation Flowing sound of refrigerant Lower than Cooling operation restarts CLOG stops periodically is not heard and frost melts ambient when heating the inlet of the temperature capillary tube COMP Freezer and Low flowing sound of A little higher Low pressure at high side CO RESSION Refrigerator refrigerant is heard and than ambient of compressor due to low Sm don t cool frost forms in inlet only temperature refrigerant level D O NO COMP No compressing Flowing sound of refrigerant Equal to ambient No pressure in the high Om RESSION operation is not heard and there is temperature pressure part of the z no frost compressor 16 6 5 1 SEALED SYSTEM DIAGNOSIS Not Cooling Complaint All components operating No airflow problems Not frosted up as a defrost problem problem has been isolated to sealed system area Frost Pattern None Partial Equalization Test Equalization Test Very Fast Very Slow Very Slow Fast Very Fast Inefficient Compressor Complete R
13. 3 Always check line voltage and amperage 8 When tilting the refrigerator remove any materials on the refrigerator especially the thin plates ex glass 4 Use standard electrical components shelf or books 9 Pai reezerwith wet 9 When servicing the evaporator wear cotton gloves j This is to prevent injuries from the sharp evaporator 6 Prevent water from spiling onto electric elements or the fins machine parts 10 Service on the refrigerator should be performed by a qualified technician Sealed system repair must be performed by a CFC certified technician 1 SPECIFICATIONS 21 cu ft 25 cu ft ITEMS SPECIFICATIONS ITEMS SPECIFICATIONS DOOR DESIGN Side Rounded VEGETABLE TRAY Opaque Drawer Type DIMENSIONS inches 35 3 4 X 30 x 69 3 4 WXDXH 21cu ft COMPRESSOR PTC Starting Type 35 3 4 X 34 1 4 X 69 3 4 WXDXH 25cu ft EVAPORATOR Fin Tube Type 298 21cu ft CONDENSER Wire Condenser NET WEIGHT pounds 320 25cu ft REFRIGERANT R 134a 115 g COOLING SYSTEM Fan Cooling LUBRICATING OIL 15010 280 ml TEMPERATURE CONTROL Micom Control DEFROSTING DEVICE SHEATH HEATER DEFROSTING SYSTEM Full Automatic Heater Defrost REFRIGERATOR LAMP 60 W 2EA FREEZER 60 W 1EA DOOR FINISH Embossed Metal VOM Stainless HANDLE TYPE Bar INNER CASE ABS Resin INSULATION Polyurethane Foam 2 PARTS IDENTIFICATION Filter
14. its original RPM Demonstration MODE 1 When the express freeze button and the refrigerator temperature control button are pushed at the same time and hold for 5 seconds or longer it converts to demonstration mode 2 The Display shows the Demo graphic 3 In this status all Loads are off Compressor Fan Damper Heater Even is Demonstration Mode the refrigerator Lamp automatic off function warks normally and can be demonstrated 4 Exit the Demo mode and reset the Display by pressing the Freezer Temp Control button and the Refrigerator Temp Control button for 3 seconds or longer 26 8 2 PCB FUNCTION 8 2 1 Power Circuit 1 Power is supplied to the control board at pin7 and 9 od connector 1 CON POWER 27 8 2 2 Load Buzzer Drive amp Open Door Detection Circuit 1 Load Drive Condition Check CON1 rower 2 ICE MAKER 5 1 sre 1 E cow CON2 I ar ALETSBI2 EE TL 8 COOLING FAN RY2 G5NB 1A esp 08 DEF HEATER FUSE M Bi LAMP F 404 5 Sa DOOR S W F EB S ed t mi Siu DOOR S W R18R2 A 9 7 26 MATER VALVE 1 E RC FILTER CONS 5 DEW HEATER FRENCH DOOR HEATER 0 VALVE II I RC FILTER
15. lowest temperature 8 1 8 REFRIGERATOR LAMP AUTO OFF 1 To avoid heat damage caused by the lamp it is turned off automatically when the refrigerator door is open for more than 7 minutes 8 1 9 Alarm for Open Door 1 This feature sounds a buzzer when the freezer or refrigerator door is not closed within 1 minute after it is opened 2 One minute after the door is opened the buzzer sounds three times each for 1 2 seconds These tones repeat every 30 seconds 3 The alarm is cancelled when the freezer or the refrigerator is closed while the buzzer sounds Freezer Door or Refrigerator Door Closed Closed 3 Times 3 Times 3 Times 3 Times Buzzer gt gt gt lt 30 sec 30 sec 30sec Within 1 min 1 min 23 8 1 10 Buzzer Sound When the button on the front Display is pushed a Ding Dong sound is produced Refer to the Buzzer Circuit 8 2 4 No 3 8 1 11 Defrosting removing frost 1 Defrosting starts each time the COMPRESSOR running time reaches 7 hours 2 For initial power on or for restoring power defrosting starts when the compressor running time reaches 4 hours 3 Defrosting stops if the sensor temperature reaches 46 4 F 8 C or more If the sensor doesn t reach 46 4 F 8 C in 2 hours the defrost mode is malfunctioning Refer to the defect diagnosis function 8 1 14 4 Defrosting won t function if its sensor is defective wires are cut or short circui
16. then complete Then the Ice Maker cycles to the Fill Mode The water supply fails to start it is not functioning Put the Heater and Motor in the off position Restart every 2 hours Refer to fig 1 NOTE If the motor malfunctions and starts before the detect lever rises MICOM regards the Ice Removing phase as completed Water then starts flowing To prevent this MICOM doesn t switch to water supply mode but restarts the ice removing mode If this happens 3 times the motor is malfunctioning and you should stop the loads Heater Motor Then restart the Ice Removing mode every 2 hours See Step 2 above Heater OFF condition Ice making sensor temperature is 50 F 10 C or more Max 18 minutes After detect LEVER rises on Heater off 1 1 1 1 2 ms 130 1 Motor on Ice removing i point off i 110 sec i 1 1 Hall IC i Mi ov lt fig1 Harvest mode Process gt 19 7 2 4 Fill Park Position 1 Once a normal harvest mode has been completed the water solenoid will be activated 2 The amount of water is adjusted by pressing the Fill Key repeatedly This changes the time allowed for fill as illustrated in the table below Water supply amount TABLE gt STAGE TIME TO SUPPLY INDICATIONS REMARKS 1 6 C4 2 6 5 sec Co The water amount will vary depend
17. L COMPONENTS Not cooling at all Compressor Check for open short or doesn t run o gt incorrect resistance readings in the following components a Starting devices Short open or broken Poor contact or shorted b OLP c Compressor coil Coil open or shorted d Wiring harness Poor contact or shorted Poor cooling performance E Replace indicated component Compressor runs Check starting Low voltage poorly voltage Advise customer that the Power supply needs to be checked by an electrician Check voltage at Poor or broken or starting devices open contact Check current flowing Shorted in sub coil of Compressor Check rating of OLP Lack of capacity Fan motor RET Wire is open or heck gt doesn t run Heek wing erau shorted Check Fan Motor Coil is shorted or open Heavy frost buildup on Check current flow in EVAPORATOR the following components Sensor Fuse M Check current flow in the Defrost Heater 14 Replace indicated component Replace gt indicated component Replace Open indicated component Replace Defrost Heater 6 4 SERVICE DIAGNOSIS CHART COMPLAINT POINTS TO BE CHECKED REMEDY No Cooling Is the power cord unplugged from the outlet Plug into th
18. LG Appliance 911 Seabreeze REFRIGERATOR CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL LRFD25850SB COLOR WESTERN BLACK CONTENTS SAFETY PRECAUTIONS E 2 1 SPECIFICATIONS sscsssstsssssntsencsssssncussssnsusasancunaeansunnesssunasaususasansenasensuanassasanesnausaasuasanauanessaunasauaesseassesansnsenasusananssanasaataae 3 2 PARTS IDENTIFICATION m 4 3 DISASSEMBLY snseacnsuuacauccdelacdcuasasuabessiiues scusuasdoasvasudaddoadasdupusunsucesautesdeatusnanacteadase 5 8 REMOVING AND REPLACING REFRIGERATOR 0 5 DOOR ED Ea Bae Een 6 7 TO REMOVE THE DISPENSER 5 beaten HARE 7 DOOR ALIGNMENT OD Deleietuie ie OUR eee 7 FAN AND FAN MOTOR oet aleae me 8 DEFROST GONTROL ASSEMBLY aient te eH te MA OD HO a e RR ERR 8 LAMB suns sinite 8 CONTROL BOX REFRIGERATOR ite ae ee ted ta tte tae e ts 8 MULTI DUG Tirem neinean teet tte tree ett tede ates 8 4 ADJUSTMENT cec cisterna cunda res aie Gud dante da qa Dec nea dr cuan nd 4 cR FC ER aaa aaan 9 10 COMPRESSOR nenas nete dt eed ta Pat dat hec 9 PIG STARTER
19. Loosen top hinge cover screw 1 Lift up cover 3 2 Disconnect door switch wire harness 2 Remove cover 3 Disconnect wire harness 5 Remove the grounding screw 6 4 Rotate hinge lever 7 clockwise and remove Lift top hinge 8 free of hinge lever latch 9 A CAUTION When lifting hinge free of latch be careful that door does not fall forward 5 Lift door up from middle hinge pin 10 and remove door 6 Place door inside facing up down onto a non scratching surface 3 2 DOOR e Door Gasket Removal 1 Remove door frame cover Starting at top of cover and working down snap cover out and away from door Frame Cover Handle Figure 1 2 Remove gasket bracket clips There are two clips on each door Start bracket removal near one of the middle clips 1 Pull gasket back to expose gasket bracket clip and door frame 2 Insert a flat tip screwdriver into seam between gasket bracket and door frame and pry back until clips snaps out 3 Continue prying back along seam until all clips snap out Gasket Door Bracket Clip Frame Flat Tip Screwdriver Gasket Bracket Figure 2 3 Remove gasket Pull gasket free from gasket channel on the three remaining sides of door Figure 3 e Door Gasket Replacement 1 Insert gasket bracket clips 1 Insert gasket bracket edge beneath door frame edge
20. NECTOR connection is poor operates CONNECTOR abnormally TRANS FUSE is open Replace COMPRESSOR COOLINGis NOCOOLING 1 Ifthe COMPRESSOR USE TEST MODE1 COMPRESSOR locked Replace OLP PTC poor operate forced COOLING or blocked If less than 7 minutes pass after compressor OLP PTC is poor Replace MAIN PWB shuts off don t press COMPRESSOR RELAY KEY and wait is poor THE CONNECTING Check the connection of WIRE is poor the black wire of the MAIN PWB CONNECTOR 2 If refrigerant is leaking Measure the amount of Refrigerant leakage Replace the leaking part frost sticking on and replace any lost EVAPORATOR and the refrigerant surface temperature of the condenser pipe FREEZER 1 If FAN MOTOR USE TEST MODE1 FAN MOTOR is poor Replace the FAN TEMPERATURE operates forced COOLING MOTOR is incorrect CONNECTING WIRE is Certify the MOTOR and poor the connection of the black wire of the MAIN PWB CONNECTOR 2 If DEFROSTING is Check the amount of frost DEFROSTING is poor See DEFROSTING is normal sticking on the poor EVAPORATOR 3 If SENSOR is normal ofthe Refrigerator SENSOR RESISTANCE Replace SENSOR SENSOR is poor 4 Door Line contact Check the seal when the door is closed Door liner damaged Replace door liner 31 PROBLEM INDICATED BY CHECK CHECKING METHOD CAUSE SOLUTION COOLINGis If 1 If FREEZE
21. R Check is FREEZER Make sure the DOOR poor REFRIGERATOR TEMPERATURE is TEMPERATURE is too isattached TEMPERATURE normal low is too low 2 If amount of cool air Make sure that the FAN MOTOR is poor Replace FAN MOTOR from FAN MOTOR 55 amount and speed of cool sufficient air are sufficient by Passage of cool air is Remove impurities touching the check blocked supplied on the REFRIGERATOR EVA frozen See DEFROSTING is poor 3 Door Line contact Check door seal when Door liner damaged Replace Door liner door is closed DEFROSTIN NO 1 If HEATER emits heat USE TEST MODE3 HEATER disconnection Replace HEATER Gis poor DEFROSTING forced DEFROSTING TEMPERATURE FUSE Replace disconnection TEMPERATURE FUSE Connection is poor Check EVAPORATOR connection and wire of MAIN PWB CONNECTOR DEFROST SENSORis Replace DEFROST poor SENSOR HEATER RELAY is poor Replace RY3 of MAIN PWB 2 If DRAIN PIPE is Check DRAIN PIPE DRAIN PIPE is blocked Remove ice and blocked impurities Check HEATER PLATE resistance 3 If ice remains after Make sure that Connection is poor Reassemble the DEFROSTING DEFROST SENSOR is DEFROST SENSOR connected Make sure that DOOR does not close Reassemble DOOR FREEZER properly REFRIGERATOR Replace GASKET DOOR is closed 32 8 4 MAIN PWB ASSEMBLY AND PARTS LIST 8 4 1 Main PWB Assembly Connector4 S W FAN R DOOR o o
22. SOR 20 4 F 22 3 77 15 C 5 F 16 9 60 KQ 10 C 14 F 13 0 KQ 47 3 KQ 5 C 23 F 10 1 38 4 KQ 0 C 32 F 7 8KQ 30 KQ 5 C 41 F 6 2 KQ 24 1 10 50 F 4 9 19 5 15 59 F 3 9 KQ 15 9 KQ 20 C 68 F 31 13 25 C 77 F 25 11 30 86 F 2 0 KQ 8 9 KQ 40 104 F 1 4 KQ 6 2 KQ 50 122 F 0 8 KQ 4 3 KQ The resistance of the SENSOR has a 5 common difference Measure the resistance of the SENSOR after leaving it for over 3 minutes in the measuring temperature This delay is necessary due to sensor response speed 29 8 2 4 Refrigeration Compartment Stepping Motor Damper Circuit A reversible DC motor is used to open and close the damper To open the damper push test button once To close the damper push test button twice CONS 30 8 3 TROUBLESHOOTING PROBLEM INDICATED BY CHECK CHECKING METHOD CAUSE SOLUTION POWER 1 The whole 1 FREEZER Check if POWER SOURCE is Use boosting TRANS SOURCE is DISPLAY REFRIGERATOR FREEZER REFRIGERA poor poor LED SEVEN TOR DOOR IS OPEN SEGMENT and check display DISPLAY is off 2 If LAMP is dim Check visually Applied voltage error Reconnect 2 DISPLAY LED CONNECTOR SEVEN SEGMENT 3 The connection of the Check connection of CONNECTOR Replace TRANS DISPLAY MAIN PWB CON
23. e outlet Check if the power switch is set to OFF Set the switch to ON Check if the fuse of the power switch is shorted Replace the fuse Measure the voltage of the power outlet If the voltage is low correct the wiring Cools poorly Check if the unit is placed too close to the wall Place the unit about 4 inches 10 cm from the wall Check if the unit is placed too close to the stove Place the unit away from these heat sources gas cooker or in direct sunlight s the ambient temperature too high or Lower the ambient temperature the room door closed Check if food put in the refrigerator is hot Put in foods after they have cooled down Did you open the door of the unit too often Don t open the door too often and close or check if the door is sealed properly it firmly Check if the Control is set to Warm position Set the control to Recommended position Food in the Is food placed in the cooling air outlet Place foods in the high temperature section Refrigerator front part is frozen Check if the control is set to colder position Set the control to Recommended position Is the ambient temperature below 41 F 5 C Set the control to Warm position Condensation or ice forms inside the unit Is liquid food sealed Check if food put in the refrigerator is hot Did you open the door of the unit too often or check if the door is sealed properly Seal liquid foods with
24. estriction Partial Restriction Condenser Cap Tube Temperature Sound Hotter than Normal Room Temperature None to Weak Air Low Side Loss of Change Leak Compressor Not Pumping Trace of Oil No Undercharge The equalization test is trying to restart a compressor using a start kit after it has been operating 17 7 OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER 7 1 OPERATION PRINCIPLE 7 1 1 Operation Principle of IceMaker Power On i Start Position Adjusts EJECTOR to Start Position with power on Ice Making Waits until water becomes cold after starting the ice making operation Harvest Runs MOTOR to drop ice from the tray into the ICE BIN Performs Ice Making Mode after supplying water by operating the SOLENOID in ICE VALVE Park Position With the detect lever checks if the ICE BIN is full o ww ww v9 wv for 3 seconds The ice maker will run through 3 stages Test Mode D To operate LINE and SERVICE press and hold the Fill Key Harvest Fill Icemaking 1 Turning the Icemaker stop switch off O stops the ice making function 2 Setting the Icemaker switch to OFF and then turning it back on will reset the icemaker control Power On Off Switch 18 7 2 ICE MAKER FUNCTIONS 7 2 1 Start Position 1 After POWER OFF or Power Outage check the EJECTOR s position with MICOM initialization to restart 2 How to check if it is in
25. iagram e Starting Method for the Motor OVERLOAD PROTECTOR AF 0 4 PTC COMPRESSOR 6 MOTOR e PTC STARTER SEALED TERMINAL Resistance Starter Capacitor Running Figure 18 4 2 4 Motor Restarting and PTC Cooling 1 It requires approximately 5 minutes for the pressure to equalize before the compressor can restart 2 The PTC device generates heat during operation Therefore it must be allowed to cool before the compressor can restart 4 2 5 Relation of PTC Starter and OLP 1 If the compressor attempts to restart before the PTC device is cooled the PTC device will allow current to flow only to the main winding 2 The OLP will open because of the over current condition This same process will continue 3 to 5 times when the compressor attempts to restart until the PTC device has cooled The correct OLP must be properly attached to prevent damage to the compressor Parts may appear physically identical but could have different electrical ratings Replace parts by part number and model number Using an incorrect part could result in damage to the product fire injury or possibly death 4 2 6 Note for Using the PTC Starter 1 Be careful not to allow over voltage and over current 2 Do not drop or handle carelessly 3 Keep away from any liquid If liquid such as oil or water enters the PTC PTC materials may fail due to breakdown of their insulating capabilities 4 If the ex
26. ing m on the water control Switch setting as 3 7 sec well as the water pressure of the connected water line pe 4 7 5 sec co SSS m 5 8 sec Co 20 7 2 5 Function TEST 1 This is a compulsory operation for TEST SVC cleaning etc It is operated by pressing and holding the Fill Key for 3 seconds 2 The test works only in the Ice Making Mode It cannot be entered from the Harvest or Fill mode If there is an ERROR it can only be checked in the TEST mode 3 Caution If the test is performed before water in the Maker is frozen the Ejector will pass through the water When the Fill mode begins Stage 4 unless the water supply has been shut off added water will overflow into the ice bin If the control doesn t operate normally in the TEST mode check and repair as needed 4 After water is supplied the normal CYCLE is followed ice making Harvest Fill Park Position 5 Five seconds after Stage 5 is completed the Ice Maker returns to MICOM control The time needed to supply water resets to the pre test setting Diagnosis TABLE gt STAGE ITEMS INDICATOR REMARKS pl Five seconds after heater starts heater will 1 HEATER go off if temperature recorded by sensor is 10 or lever is in up position Five seconds after heater starts you can 2 MOTOR confirm that motor is moving
27. ings until the doors are aligned Three snap rings are provided with unit Figure 10 3 5 FAN AND FAN MOTOR 1 Remove the freezer shelf If your refrigerator has an icemaker remove the icemaker first Remove the plastic guide for slides on left side by unscrewing phillips head screws Remove the grille by removing one screw and pulling the grille forward Remove the Fan Motor assembly by loosening 2 screws and disassembling the shroud Pull out the fan and separate the Fan Motor and Bracket 2 3 3 7 1 Refrigerator Compartment Lamp 1 Unplug the power cord from the outlet 2 Remove refrigerator shelves 3 Release the hooks on both ends of the lamp shield and pull the shield downward to remove it 4 Turn the lamp counterclockwise 5 Assembly is the reverse of disassembly Replacement bulb must be the same specification as the original Max 60 W2EA RR FAN MOTOR BRACKET Figure 11 3 6 DEFROST CONTROL ASSEMBLY Defrost Control assembly consists of Defrost Sensor and FUSE M The Defrost Sensor works to defrost automatically It is attached to the metal side of the Evaporator and senses its temperature At 72 C it turns the Defrost Heater off Fuse M is a safety device for preventing over heating of the Heater when defrosting 1 Pull out the grille assembly Figure 12 2 Separate the connector with the Defrost Control assembly and replace
28. lection release the LED will turn ON or OFF 3 If there is a power outage and the refrigerator is powered on again EXPRESS FREEZING will be canceled 4 To activate this function press the Express Freezing key and the LED will turn ON This function will remain activated for 24 hrs The first three hours the compressor and Freezer Fan will be ON The next 21 hours the freezer will be controlled at the lowest temperature After 24 hours or if the Express Freezing key is pressed again the freezer will return to its previous temperature 5 During the first 3 hours 1 Compressor and freezer fan HIGH RPM run continuously 2 If a defrost cycle begins during the first 90 minutes of Express Freezing the Express Freeze cycle will complete its cycle after defrosting has ended If the defrost cycle begins when Express Freeze has run for more than 90 minutes Express Freeze will run for two hours after the defrost is completed 8 If EXPRESS FREEZING is pressed during defrost EXPRESS FREEZING LED is on but this function will start seven minutes after defrost is completed and it shall operate for three hours 4 If EXPRESS FREEZING is selected within seven minutes after compressor has stopped the compressor compressor delays seven minutes shall start after the balance of the delay time 5 The fan motor in the freezer compartment runs at high speed during EXPRESS FREEZING 6 For the rest of the 21 hours the freezer will be controlled at the
29. minimum 2 hours after failure occurs Failure of BLDC lf there i f Poor motor hooking to Fan Motor at E Ht pie IS no A wires of fan contact of 6 Freezing r signator an 99SEC structures to fan snapping Compartment in operation fan motor or short circuit of Lead wires Note 1 Freezer room notch temperature display and refrigerator room notch temperature display Failure code indication part are normally indicated in abnormal ambient sensor and Er indicated on the amvient temperature display LED check function If simultaneously pressing express freezer button and freezing temperature adjustment button for a second display LED graphics on If releasing the button the LED graphic displays the previous status 25 8 1 16 TEST Mode 1 The Test mode allows checking the PCB and the function of the product as well as finding out the defective part in case of an error The test mode is operated by pressing two buttons at Display panel While in the test mode the function control button is not recognized but the recognition tone beep sounds After exiting the test mode be sure to reset by unplugging and then plugging in the appliance If an error such as a sensor failure is detected while in the test mode the test mode is cleared and the error code is displayed A 6 While an error code is displayed the test mode will not be activated
30. nce six months Classification Eier eese iur ead about 28 000 seconds of using water filter 3 Water filter light and FILTER RESET HOLD 3 SECS text turn on to tell you need to replace the filter soon Filter Status 4 After replace the filter press and hold the lock button Display FILTER RESET more than 3 seconds HOLD 3SECS Then water filter light and FILTER RESET HOLD 3 gt SECS text turn off with reset status 8 1 5 Express freezing selection EXPRESS Please select this function for quick freezing EXPRESS FRE FRZ Function is repeated following below whenever pressing Express FRZ button Expressing freezer function automatically turns off after fixed time passes ON 22 8 1 6 CONTROL OF FREEZER FAN MOTOR 1 Freezer fan motor has high and standard speeds 2 High speed is used at power up for express freezing and when refrigerator is overloaded Standard speeds is used for general purposes 3 To improve cooling speed the RPM of the freezer fan motor change from normal speed to high 4 High speed 2700RPM Initial power on or load corresponding operation express freezing Normal speed 2400RPM General working conditions 5 Fan motor stops when refrigerator or freezer door opens 8 1 7 EXPRESS FREEZING 1 The purpose of this function is to intensify the cooling speed of freezer and to increase the amount of ice 2 Whenever selection switch is pressed se
31. of plastic but this will go away after 1 2 weeks e Other possible problems the freezer Check the refrigeration system Check the Thermistor Check if frost forms in Not defrosting ofthe defrosting circuit The system Perform sealed gt is faulty system repair The operation of Replace the gt the Thermistor is_ Thermistor incorrect 15 Check Components 6 5 REFRIGERATION CYCLE Troubleshooting Chart STATE OF STATE OF THE TEMPERATURE CAUSE THE UNIT EVAPORATOR OFTHE REMARKS COMPRESSOR PARTIAL Freezer Low flowing sound of A little higher Refrigerant level is low due LEAKAGE compartment and Refrigerant is heard and than ambient to a leak Refrigerator don t frost forms in inlet only temperature Normal cooling is possible by m cool normally restoring the normal amount of 2 refrigerant and repairing the leak gt m COMPLETE Freezer Flowing sound of refrigerant Equal to ambient No discharging of Refrigerant LEAKAGE compartment and is not heard and frost isn t temperature Normal cooling is possible by Refrigerator don t formed restoring the normal amount of cool normally refrigerant and repairing the leak o PARTIAL Freezer Flowing sound of refrigerant A little higher Normal discharging of the CLOG compartment and
32. place Check HIGH LOW signals from HALL SENSOR in MICOM PIN 3 Control Method to check if it is in place 1 EJECTOR is in place Itis an initialized control so the mode can be changed to ice making control 2 EJECTOR isn t in place A If EJECTOR is back in place within 2 minutes with the motor on it is being initialized If not go to Step B B If EJECTOR is back in place within 18 minutes after the heater turns from ON to OFF it is being initialized If not it is not functioning Repeat Step B with Heater and Motor off 7 2 2 Ice Making Mode 1 Ice Making refers to the freezing of supplied water in the ice trays Complete freezing is assured by measuring the temperature of the Tray with Ice Making SENSOR 2 Ice Making starts after completion of the water fill operation 3 The Ice Making function is completed when the sensor reaches 19 F 7 C 60 to 240 minutes after starting 4 If the temperature sensor is defective the ice making function will be completed in 4 hours NOTE After Icemaker Power is ON the Icemaker heater will be on for test for 9 sec 7 2 3 Harvest Mode 1 Harvest Ice removing refers to the operation of dropping cubes into the ice bin from the tray when ice making has completed 2 Harvest mode 1 The Heater is ON for 30 seconds then the motor starts 2 After performing Step 1 the Heater is turned OFF the Ejector will be back in place wthin 18 minutes Hall SENSOR sign OV Ice removal is
33. set to 37 amp 0 EXPRESS FLTERSTATS a ROOM TENPERATURE uc uc 666 eC Lu c FLTER RESET 2 LOCK ON TEMP REF TEMP DISPENSER amp BUTTON 8 1 2 How to Toggle the Display between F amp C 1 The display temperature mode can be changed from F to C or C to F by pressing and holding the FRZ TEMP and the REF TEMP keys at the same time for over one second 2 The initial setting is F Whenever the mode is changed the LED lights are changed 8 1 3 Lock function dispenser and display button lock 1 When the refrigerator is first turned on the buttons are not locked The display panel shows the padlock unlocked icon 2 To lock the display the dispenser and the control panel press and hold the LOCK button for 3 seconds The locked padlock icon is displayed with the word LOCK printed beside it 3 The LOCK button is the only control feature that remains active in the locked state The buzzer sound other control buttons and the dispenser are deactivated Ex In selecting Ex In selecting 4 To release from the locked state press and hold the LOCK LOCK LOCK again button again for 3 seconds LOCK CONTROL DISPENSER amp BUTTON DISPENSER amp BUTTON 8 1 4 Filter condition display function 1 There is a replacement indicator light for the water filter cartridge on the dispenser 7 2 Water filter needs replacement o
34. ted 8 1 12 Filter Replacement Indication 1 In 6 months after the UNIT refrigerator is power on or after 28 000 seconds of dispenser use the water filter Indicator LED will be ON 2 When the water filter indicator LED is illuminated you should change the water filter After this you must press the water filter button for three seconds and you will hear a ding dong sound The LED will be OFF This operation will indicate that the UNIT is reset to its initial conditions so this process is restarted 8 1 13 Electrical Parts Are Turned On Sequentially Electrical parts such as COMP defrosting heater freezer FAN etc are turned on in the following order to prevent noise and parts damage Several parts are started at the same time at initial power on and are turned off together when TEST is completed OPERATING ORDERS Temperature of Defrosting Sensor is 113 F 45 C or POWER in1 2 second COMP in1 2second Freezer FAN more when unit is newly ON ON gt ON 3 purchased or when moved 5i E Temperature of defrosting POWER 1 2 second Defrosting 10 second Defrosting 5 sensor is lower than ON heaterON heater OFF o 113 F 45 C gt when power cuts SERVICE in 1 2 second COMP in 1 2 second Freezer FAN ON ON Reset to normal operation Totalload in7 minute COMP in1 2secona Freezer FAN from TEST MODE OFF gt 8 1 14 Ho
35. terior of the PTC is damaged the resistance value may be altered This can cause damage to the compressor and result in a no start or hard to start condition 5 Always use the PTC designed for the compressor and make sure it is properly attached to the compressor Parts may appear physically identical but could have different electrical ratings Replace parts by part number and model number Using an incorrect part could result in damage to the product fire injury or possibly death 4 3 OLP OVERLOAD PROTECTOR 4 3 1 Definition of OLP 1 OLP OVERLOAD PROTECTOR is attached to the Compressor and protects the Motor by opening the circuit to the Motor if the temperature rises and activating the bimetal spring in the OLP 2 When high current flows to the Compressor motor the Bimetal works by heating the heater inside the OLP and the OLP protects the Motor by cutting off the current flowing to the Compressor Motor 4 3 2 Role of the OLP 1 The OLP is attached to the Sealed Compressor used for the Refrigerator It prevents the Motor Coil from being started in the Compressor 2 For normal operation of the OLP do not turn the Adjust Screw of the OLP in any way OVERLOAD PROTECTOR cross section Part D Customer part No Name number D Base phenolic Lot code UL 94 V 0 rated date cod 930 FBYY Movable arm support plated steel Physical 3 Stationary contact support termination Electrical
36. the Defrost Control assembly after cutting the Tie Wrap Figure 13 GRILLE ASSEMBLY DEFROST CONTROL ASSEMBLY N Figure 12 Figure 13 3 7 LAMP Figure 14 Figure 15 3 7 2 Freezer Compartment Lamp 1 Unplug refrigerator or disconnect power 2 Reach behind light shield to remove bulb 3 Replace bulb with a 60 watt appliance bulb 4 Plug in refrigerator or reconnect power 3 8 CONTROL BOX REFRIGERATOR 1 First remove all shelves in the refrigerator than remove the Refrigerator control Box by loosening 2 screws CONTROL BOX COVER LAMP Figure 16 2 Remove the Refrigerator Control Box by pulling it downward 3 Disconnect the lead wire on the right position and separate the lamp sockets 3 9 MULTI DUCT 1 Remove the upper and lower Caps by using a flat screwdriver and remove 2 screws Figure 17 2 Disconnect the lead wire on the bottom position Figure 17 4 ADJUSTMENT 4 1 COMPRESSOR 4 1 1 Role The compressor intakes low temperature and low pressure gas from the evaporator of the refrigerator and compresses this gas to high temperature and high pressure gas It then delivers the gas to the condenser 4 1 2 Composition The compressor includes overload protection The PTC starter and OLP overload protector are attached to the outside of the compressor Since
37. the compressor is manufactured to tolerances of 1 micron and is hermetically sealed in a dust and moisture free environment use extreme caution when repairing it 4 1 3 Note for Usage 1 Be careful not to allow over voltage and over current 2 If compressor is dropped or handled carelessly poor operation and noise may result 3 Use proper electric components appropriate to the Particular Compressor in your product 4 Keep Compressor dry If the Compressor gets wet in the rain or a damp environment and rust forms in the pin of the Hermetic Terminal poor operation and contact may result 5 When replacing the Compressor be careful that dust humidity and soldering flux don t contaminate the inside of the compressor Contamination in the cylinder may cause noise improper operation or even cause it to lock up 4 2 PTC STARTER 4 2 1 Composition of PTC Starter 1 PTC Positive Temperature Coefficient is a no contact semiconductor starting device which uses ceramic material consisting of BaTiOa 2 The higher the temperature is the higher the resistance value These features are used as a starting device for the Motor 4 2 2 Role of PTC Starter 1 The is attached to the Sealed Compressor and is used for starting the Motor 2 The compressor is a single phase induction motor Durign the starting operation the PTC allows current flow to both the start winding and main winding 4 2 3 PTC Applied Circuit D
38. w to show the display amp OFF The display can be changed from on to off mode or off to on mode by pressing and holding the EXPRESS FRZ and FRZ TEMP buttons at the same time for over five seconds 24 8 1 15 Defect Diagnosis Function 1 Automatic diagnosis makes servicing the refrigerator easy 2 When a defect occurs the buttons will not operate but the tones such as ding will sound 3 When the defect CODE removes the sign it returns to normal operation RESET 4 The defect CODE shows on the Refrigerator and Freezer Display LA EXPRESS DIGITAL CONTROL FILTER STATUS RZ F d ROOM TEMPERATURE lt LIC ORN FILTER RESET Lock ON FRZTEMP REF TEMP HOLDaSECS DISPENSER amp BUTTON iz sue Error Code Error Code ERROR CODE on display panel NO ITEM ERROR CODE CONTENTS REMARKS 1 Failure of freezer E FS Cut hort circuit wi Sarisor r ut or short circuit wire 2 Failure of E S C h Refrigerator sensor r r ut or short circuit wire Inspect Connecting wires Failure of defrost E on each sensor 3 sensor Er dS Cut or short circuit wire Failure of Room 4 Temperature When Display check mode Cut or short circuit wire sensor Snapping of defrost heater Fail f def When defrost sensor or Temperature fuse pull 5 ailure of defrost Er dH doesn t reach 46 F within 2 out of connector indicated mode hours after starting defrost
39. wrap Put in foods after they have cooled down Don t open the door too often and close it firmly Condensation forms in the Exterior Case Check if the ambient temperature and humidity of the surrounding air are high Is there a gap in the door gasket Wipe moisture with a dry cloth It will disappear in low temperature and humidity Fill up the gap There is abnormal noise Is the unit positioned in a firm and even place Are any unnecessary objects placed in the back side of the unit Check if the Drip Tray is not firmly fixed Check if the cover of the compressor enclosure in the lower front side is taken out Adjust the Leveling Screw and position the refrigerator in a firm place Remove the objects Fix the Drip Tray firmly in the original position Place the cover in its original position Door does not close well Check if the door gasket is dirty with an item like juice Is the refrigerator level Is there too much food in the refrigerator Clean the door gasket Position in a firm place and level the Leveling Screw Make sure food stored in shelves does not prevent the door from closing Ice and foods smell unpleasant Check if the inside of the unit is dirty Are foods with a strong odor unwrapped The unit smells of plastic Clean the inside of the unit Wrap foods that have a strong odor New products smell
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