REFRIGERATOR SERVICE MANUAL - Atech Appliance Repair
Contents
1. 10 11 DO NOT ATTEMPT TO REMOVE THE REFRIGERANT LINES 3 6 LAMP 3 7 MULTI DUCT Unplug Refrigerator or disconnect power at the circuit 1 breaker If necessary remove top shelf or shelves 3 6 1 Refrigerator Compartment Lamp 2 1 Release 2 screws 2 Hold both ends with your both hands and pull it downward to remove it Figure 12 3 Use a flat tool as shown below to remove the cover lamp Figure 13 4 As shown below use a flat tool to remove the cover lamp Cover Lamp LED Assembly Case Lamp Figure 14 3 6 2 Freezer Compartment Lamp 1 Unplug refrigerator power cord form outlet 2 Remove screw with direver 3 Grasp the cover Lamp pull the cover downward Figure 15 Remove the upper and lower Caps by using a flat screwdriver and remove 2 screws Figure 16 Disconnect the lead wire on the bottom position Figure 16 3 8 MAIN PWB CAUTION When replacing the dispensor cover in the reverse order of removal be careful that the lead wire does not come out and the water tube is not pinched by the dispensor 1 Loosen the 3 screws on the PWB cover 3 10 DISPLAY PCB As show2. 3 19 2 Follow Steps to Reinstall Step 1 Reinstall the right side gear into the clip Step 2 Insert the rail into the right side gear Gears do not Step 3 Insert the rail into the left side gear and insert the need to be perpendicular to each other gear into the clip b Step 4 The rail system will align itself by pushing the rails Step 5 Reinstall the freezer door by inserting the rail tabs all the way into the freezer section into the guide rail Pull the rails back out to full extension Step 6 Reinstall the two screws into the guide rails one from each side Step 7 Reinstall the lower basket and close the freezer door 14 3 20 WATER VALVE DISASSEMBLY METHOD 3 21 FAN AND FAN MOTOR DISASSEMBLY METHOD 1 Turn off the water Then separate the water line from the 1 Using a short screwdriver loosen one SCREW in DRAIN valve PIPE ASSEMBLY and one connected to the MOTOR COVER MOTOR COVER 2 Pull and separate the FAN ASSEMBLY and MOTOR turning counterclockwise based on the MOTOR SHAFT FAN ASSEMBLY MOTOR 3 Separate the housing and pull out the valve The assembly is in the reverse order of the disassembly and take special care for the following details 1 Be careful not to bend the tube during assembly 2 Press the WATER DISPENSER button until water pours out and check for leakage in the CONNECTOR TUBE 11 differs by the water pressure but usually takes about 2 minute
3. 1 Remove the freezer shelf If your refrigerator has an icemaker remove the icemaker first 2 Remove the plastic guide for slides on left side by unscrewing phillips head screws 3 Remove the grille by removing one screw and pulling the grille forward 4 Remove the Fan Motor assembly by loosening 2 screws and disassembling the shroud 5 Pull out the fan and separate the Fan Motor and Bracket VS X 2 GRILLE Figure 9 CAUTION DO NOT ATTEMPT TO REMOVE THE MULLION REFRIGERANT LINES Ice Fan Scroll Assembly Replacement 1 Remove the plastic guide for slides on left side by unscrewing phillips head screws 2 Pull the grille forward as shown in the second picture 3 Disconnect wire harness of the grille 4 Remove the scroll assembly by loosening all screws 3 3 5 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 46 F 8 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 10 2 Separate the connector with the Defrost Control assembly and replace the Defrost Control assembly after cutting the Tie Wrap Figure 11 GRILLE ASSEMBLY DEFROST CONTROL ASSEMBLY 1
4. 12 2 SERVICE DIAGNOSIS CHART COMPLAINT POINTS TO BE CHECKED REMEDY No Cooling Cools poorly Food in the Refrigerator is frozen Condensation or ice forms inside the unit Condensation forms in the Exterior Case There is abnormal noise Door does not close well Ice and foods smell unpleasant Is the power cord unplugged from the outlet Check if the power switch is set to OFF Check if the fuse of the power switch is shorted Measure the voltage of the power outlet Check if the unit is placed too close to the wall Check if the unit is placed too close to the stove gas cooker or in direct sunlight Is the ambient temperature too high or the room door closed 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 Check if the Control is set to Warm position Is food placed in the cooling air outlet Check if the control is set to colder position Is the ambient temperature below 41 F 5 C 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 Check if the ambient temperature and humidity of the surrounding air are high Is there a gap in the door gasket 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 fixe
5. 23 5 kQ 50 F 10 C 20 19 kQ 59 F 15 C 16 15 5 The sensor is determined by the temperature For example 23 0 indicates 4 F 97 8 5 Defrost Heater Error Er dH Ed Checking flow Result amp SVC Action Check the Door gasket SVC Action Check the Defrost control part Go to the 3 Fuse M Change Fuse M Def 34 42 0 3 Change Fuse M 21 Go to 3 Def Heater Input Test 3 Mode Push the button 3 times o e Check the Blue to Orange SVC Action 112 116 V Go to the 5 Heplace Main PCB lt gt Release test mode Push the button 1 times Normal Check the Blue to Orange Explain to customer 112 116 V Heplace Main PCB CON3 28 8 6 Checking flow Result amp SVC Action Reset the unit and Input Test 1 Mode Push the button 1 time DOC ru c F the fan is not working E E Check the Fan motor Rotate fan using your hand It feel sticky change the motor Cause of ice or rust inside of motor Point Result SVC Action 1 2 Below 9V Change the PCB 2 3 Change the motor Open the freezer door and Check the air we flow E Status SVC Action While an error code is displayed 1 20 8 7 Fan Error Er IF E Checking flow Result amp SVC A
6. o 0 20 m e 2 lt BK BLACK NOIR YL YELLOW JAUNE SB SKY BLUE BLEU BLANC BL BLUE BLEU LG Electronics MEZ62936301 CIRCUIT DIAGRAM PIECE DE MISE LA TERRE LE TYPE DE PRISE ET DE MISE LA TERRE DU COMPRESSEUR ET LES FUSIBLES FIGURANT SUR LE SCHEMA DU CIRCUIT SONT SUJETS A MODIFICATION SELON LES R GIONS LE TYPE DE MOD LE AUGER MOTER REFRIGERATOR STEPPING MOTOR BL WHSB 2 3 4 Se BK CORDON D ALIMENTATION NEUTRE WATER VALVE 1 1 GY BO YL PK 1516 17 9 12 LAMPE AVANT 0 DEF CHAUFFAGE FUSIBLE F DOOR S W CAPDUCT C FAN MOTOR BLDC ICING FAN MOTOR BLDC F FAN MOTOR BLDC COMPRESSEUR S LINEAR 000 MISE LA TERRE DU COMPRESSEUR ICING SENSOR R DOOR S W NIVIN A18IN3SSV 101 0 CITT JOVIGNASSY PWB ASSEMBLY DISPLAY CON102 112 3 4 5 6 7 8 9 011 1213 415 611718 PET RT sensor CC VVOO SW WATER LEVER PI CE DE MISE LA TERRE CAP DUCT HEATER 218 8 5 5 o z a VMAKER ON OFF SW PWB PCB BN BROWN MARRON GN GREEN
7. Measure Flow Sensor in machine room Standard Test Points Result wire to Black wire 4 300 56 12 TROUBLESHOOTING 12 1 INFORMATION OF LINEAR COMPRESSOR The information tag provides compressor model refrigerant serial number and safety approval Compressor Label 1 Compressor Model e Series name 3 DLF FA FB e Operating Type A A Inverter E Inverter e 16 FB67LEN 6 Displacement RUE d e Voltage 90 9 0 stroke A amp Frequency M 220V 50 60Hz Application Category N 115V 50 60Hz L LBP with R134a T H HBP with R134a Efficiency version N LBP with R600a 1 generation 2 generation Name Plate Refrigerant LG FC75LANE SE Serial Number 134 Serial No Model Code i i Month Size ib X 20mm 1 Januay October e a e November ER 9 September D December Kee 1PH 119 SH EE C e UI win There are two types controllers used in the linear compressor system E inverter system is used with the FC75LANE compressor A inverter system is used with the FC90LANA compressor Refrigerator Comp Drive Compressor FC75LANE C On Off Inverter Self E Inverter Modulation oy
8. SVC Action Check the air flow Push the button 1 time Go to the 5 Point SVC Action 1 to 2 Other Change damper 270 330 Q normal 3 to 4 41 10 10 1 TEST MODE Removing 1 How to make TEST MODE If you push the test button on the Main PCB the refrigerator will be enter the TEST MODE 1 time Comp Damper All FAN on All things displayed 22222253 155 7 77 e e gg t LI ell lf E all al lt sl KS d tr iu TE kk 2 2 times Damper closed 22 22 displayed x 3 times Forced defrost mode 33 33 displayed Main PWB 2 How to remove Terminal Position Assurance TPA lt AC TPA gt After measure the values you should put in the TPA again 42 10 2 TEMPERATRUE CHART FRZ AND ICING SENSOR 43 10 3 TEMPERATRUE CHART REF AND DEF SENSOR 44 10 4 1 673480 After sending signal to the fan the checks the BLDC fan motor s lock status If there is no feedback signal from the BLDC fan the fan motor stops for 10 seconds and then is powered again for 15 seconds To determine that there is a fan motor malfunction this process is repeated 3 times If the fan motor is determined to be defective the error code will be shown in the display for 30 minutes At this point the proc
9. VERT PK PINK ROSE PR PURPLE PURPLE GN YL GREEN YELLOW VERT JAUNE BO BRIGHT ORANGE ORANGE BRILLANT GY GRAY GRIS WH WHITE BLANC BLIWH BLUE WHITE BLEU BLANC ICE MAKER SENSOR ASSEMBLY ICE MAKER ICE MAKER KIT RD RED ROUGE WH BK WHITE BLACK LANC NOIR RD WH RED WHITE ROUGE BLANC 2 52 TvdIONIMd JDVIEWASSV MOTEUR _ PAS PAS REFRIGERATEUR CAPTEUR D CAPTEUR R CAPTEUR F TATEU iz m LATEU S BALAI LATEU S BALAI LATEU MOTEUR VIS SANS FIN CLAPET EAU 8 VL 1 2 4 56 7 101 12 R SISTANCE CONDUITE D EAU R MOTEUR DU AVANT CONDENSATEUR CIRCUIT R GIVRAGE IMPRIME RF RT CAPTEUR CIRCUIT IMPRIME ECRAN CON101 CON102 CON103 112 3 4 5 6 7 8 9 0 11213 415 611718 1920121 2123124125 26 112314 EE p INTERRUPTEUR ALEVIER EAU COMMUTATEUR DE LEVIER DE GLA ONS Is o RESISTANCE CONDENSATEUR o 2 WH RD WHITE RED BLANC ROUGE YL BK YELLOW BLACK JAUNE NOIR GY WH GRAY WHITE GRIS BLANC BN WH BROWN WHITE MARRON BLANC PR WH PURPLE WHITE VIOLET BLANC BO BL BRIGHT ORANGE BLUE ORANGE BRILLANT BLEU PLAQUETTE DE CIRCUIT CIRCUIT IMPRIME INFRAROUGE MOTEUR DE LA M
10. housing from female housing Measure the resistance between 1 and 3 Cube Solenoid 1 to 3 31 1 42 09 0 11 7 Damper Function The damper supplies the cold air at freezer room to chillroom by using the damper s plate Chillroom is colder than before when damper s plate is open When damper s plate is close chillroom s temperature will rise How to Measure Tabie 21 2 24 OESCH Rotation Red L Wtre Color 01121314 O et D eme e event Blue White Check the 1 3 lt extension gt 2 4 Check 1 3 Check the resistance between connectors 1 3 and 2 4 It means check whether or not applying an electric current If there is resistance it means the damper not inferiority Standard 11 8 Lamp Socket Function The lamp socket connect cover lamp assembly to lamp The lamp socket fix lamp and unite lamp and cover lamp assembly The lamp socket supply electric source to lamp also How to Measure Check the resistance between connector of housing and connector of lamp socket It means check whether or not applying an electric current If there is resistance it means the lamp socket is not inferiority and 9 to 55 11 9 Flow Sensor Function Flow Sensor in machine room Count the water quantity from city water to water filter in refrigerator How to
11. connecting Piston over run Outlet clogging Piston constraint Circuit Over current error Or cycle error Please check Whether connector of compressor is attached rightly or not after power off After the first action You check on normal operation of compressor If same symptom arises after the second action replace PCB After resetting power check if it is running normal If same symptom arises after the first action If same symptom arises after the second action replace compressor After resetting power check if it is running normal If same symptom arises after the first action If same symptom arises after the second action replace compressor After resetting power check if it is running normal If same symptom arises after the first action If same symptom arises after the second action replace compressor After resetting power check if it is running normal If same symptom arises after the first action replace PCB 11 COMPONENT TESTING INFORMATION 11 1 Defrost Controller Assembly Function Controller assembly is consist of 2 kinds of part those are fuse m and sensor we can decide part is defect or not when we check the resistance Fuse m can cut off the source when defrost heater operate the unusual high temperature Sensor give temperature information to Micom H
12. motor refer to failure diagnosis function table for failure display 14 1 9 Ice Compartment Fan 1 The Fan is controlled by the the sensor on the top of the ice compartment 2 The Failure sensing method is the same as in the fan motor of the freezer refer to failure diagnosis function table for failure display 14 1 10 Refrigeration room Fan Motor 1 The refrigeration room fan is switched ON and OFF in conjunction with the refrigeration room temperature 2 The Failure sensing method is the same as in the fan motor of the freezing fan motor refer to failure diagnosis function table for failure display 69 14 1 11 PLUS Ic bi ch The purpose this function is to intensify cooling speed of freezer and to increase amount of ice Whenever selection switch is pressed selection release the Icon will turn ON or OFF If there is a power outage and the refrigerator is powered on again Ice PLUS will be canceled To activate this function press the Ice PLUS key and the Icon will turn ON This function will remain activated for 24 hrs The first one hours the compressor Freezer Fan and Icing Fan will be ON The next 23 hours the Ice room will be controlled at the lowest temperature After 24 hours or if the Ice PLUS key is pressed again the Ice room will return to its previous temperature During the first 1 hours 1 Compressor Freezer Fan and Icing Fan run continuously 2 I
13. refrigerant is not heard and frost melts Low flowing sound of refrigerant is heard and frost forms in inlet only Flowing sound of refrigerant is not heard and there is no frost TEMPERATURE OF THE COMPRESSOR A little higher than ambient temperature Equal to ambient temperature A little higher than ambient temperature Equal to ambient temperature Lower than ambient temperature A little higher than ambient temperature Equal to ambient temperature Refrigerant level is low due to a leak Normal cooling is possible by restoring the normal amount of refrigerant and repairing the leak No discharging of Refrigerant Normal cooling is possible by restoring the normal amount of refrigerant and repairing the leak Normal discharging of the refrigerant The capillary tube is faulty Normal discharging of the Refrigerant Cooling operation restarts when heating the inlet of the capillary tube Low pressure at high side of compressor due to low refrigerant level No pressure in the high pressure part of the compressor There is no need for routine condenser cleaning in normal Home operating environments If the environment is particularly greasy or dusty or there is significant pet traffic in the home the condenser should be cleaned every 2 to 3 months to ensure maximum efficiency If you need to clean the condenser Remove the mechanical cover eUse a vacuum cleaner wi
14. seconds LOCK is activated with Lock Icon on 3 The LOCK button is the only control feature that remains active Ex In selecting Ex In selecting in the locked state The buzzer sound other control buttons LOCK LOCK again and the dispenser are deactivated 4 To release from the locked state press and hold the LOCK button again for 3 seconds 5 f you don t hold the Alarm Lock button more than 3 seconds Alarm function will be changed and alarm for opened door will be on off same as alarm icon indicating 14 1 4 Filter condition display function 1 There is a replacement indicator light for the filter Classification In initial Power On Blinking cartridge on the dispenser Filler RESET 2 Water filter needs replacement once six months or of using water filter Filter Status ve gu 3 When the Water Filter Icon blinks you must exchange Display the filter 4 After replacing the filter press and hold the Light Filter button for more than 3 seconds After then water Filter icon turn off with reset status 68 14 1 5 Ice Plus selection 1 Please select ice plus function for quick freezing 2 When you press the ice plus button the ice plus icon will be turned on again 3 Ice plus function automatically turns off after a fixed time passes 4 If you want additional power save you can turn on energy saving some heater off for anti dew 5 To turn on or off the en
15. system 13 3 4 Not Dispensing Ice Clogged Ice In the Ice Bin Suspected items Customer haven t used ice dispenser over a week Resolution the ices gets stuck if customer doesn t use ice dispenser In this case empty the ice bin and wait until the new ices are stacked in the ice bin Temperature of icemaker compartment is not cold enough Resolution Check ice fan sealed system cap duct vent and other items related to temperature Cap duct doesn t seal the air properly Resolution Possibly warm air could get into the compartment and make ices get stuck Replace the cap duct with new one In door geared motor doesn t work Resolution Change the in door geared motor and test it The water comes out of fill cup and the water get into the ice bin Resolution The water pressure from shutoff valve is too high Recommend to use regulator to the customer and close the shutoff valve slightly Clogged Ices In the Chute Suspected items Cap duct doesn t seal the air properly Resolution Possibly warm air could get into the compartment and make ices get stuck Replace the cap duct with new one 67 14 DESCRIPTION OF FUNCTION amp CIRCUIT 14 1 FUNCTION 14 1 1 Function 1 When the appliance is plugged in it is set to 37 F for Refrigerator and O F for freezer You can adjust the Refrigerator and the Freezer control temperature by pressing the ADJUST butto
16. 0 IGE CORNER 4DOORHR BEPEACENEDNLT 3425 02 1 2 10 2 a rettet itid bota en 10 11 SUB PWB FOR WORKING DISPENSER EE 11 CAPiDUCT MOTOR REPLAGEMENT exin ctia E Se ee eee 11 HOW TOdHEMOVE AICE BIN ecco dec ee sa ee eee 12 POW TOINSERT cil 12 HOW REMOVE AND REINSTALL THE PULLOUT DRAWER 13 14 WATER VALVE DISASSEMBLY METHOD 15 FAN AND FAN MOTOR DISASSEMBLY METHOD iaa ese aene 15 PULEOUFDRAWER X 16 REI E WE 17 19 COMPRESS 9P m UT 17 INTRODUCTION OF E LINEAR COMPRESSOR 17 19 5 CIRCUIT DIAGRAM en 20 6 TROUBLESHOOTING E 21 Ts PCB PICTURE pe R 22 23 8 Troubleshooling WIEN DESEN ieee eee ees 24 32 9 Troubleshooting Without Error Display geegent See 33 41 WO TE 42 47 11 COMPONENT TESTING INFORMATION 25002005 aa Ecco aux cx SEENEN 48 56 Kn ef ele ien H E WEE 57 63 13 ICEMAKER AND TROUBLE SHOOTING METHOD nennen nnne nnn n
17. ACHINE GLACONS COMMUTATEUR MARCHE ARRET DE LA FABRIQUE DE GLACE CAPTEUR DE LA RESISTANCE DE TRANSISTOR PHOTO MACHINE GLA ONS COMMUTATEUR D ARR T DE LA MACHINE GLACONS R SISTANCE DE DELINFRAROUGE PUUL ASSEMBLAGE CIRCUIT IMPRIM FABRIQUE DE GLACE KIT FABRIQUE DE GLACE RD YL RED YELLOW ROUGE JAUNE BL RD BLUE RED BLEU ROUGE BO WH BRIGHT ORANGE WHITE ORANGE BRILLANT BLANC 6 TROUBLESHOOTING 6 1 Error Code Summary WARNING When you check the Resistance values be sure to turn off the power HH Error Code D And wait for the voltage discharge sufficiently Error Code D NOTE 3 hours before the error Press the Ice Plus button and Freezer button simultaneously 3 hours after the error All errors except for Er rt Er SS Er IS except for Icing sensor Er gF Er It error are displayed Er IS which is displayed without input of user is the error of Icing Sensor Error Display Freezer Freezer Temperature Temperature Error Detection Error Generation Factors Category Normality Freezer Sensor Error Refrigerator Sensor Error Defrosting Sensor Error Normal operation of Display FS Short or Disconnection of Freezer Sensor IS Short or Disconnection of Refrigerator Sensor dS Short or Disconnection of Defrosting Sensor Short or disconnection of the sensor about maker Er Er Er Check each sensor and its connector Icing Sensor Er
18. Duct Motor 3 When replacing to a new Motor always check position of the Duct Door and Link to install the Motor 3 15 SUB PWB FOR WORKING DISPENSER 1 Disconnect the wire harness Duct Door Link Cap Duct Motor 4 Assemble on the screws 2 Loosen the screw on the sub PWB and replace the sub PWB in the reverse order of removal F e gt 11 3 17 HOW TO REMOVE A ICE BIN 3 18 HOW TO INSERT A ICE BIN 1 Grip the handles as shown in the picture 1 Insert the Ice Bin slightly tilting it to avoid touching the Icemaker Especially Ice Detecting Sensor 3 Take the Ice Bin out slowly 12 3 19 HOW REMOVE AND REINSTALL THE PULLOUT DRAWER 3 19 1 Follow Steps to Remove Step 1 Open the freezer door Step 2 Remove the lower basket Step 3 Remove the two screws from the guide rails one Step 4 Lift the freezer door up to unhook it from the rail from each side support and remove Pull both rails to full extension Step 5 First Remove the gear from the left side first by releasing the tab behind the gear place a screwdriver between the gear and the tab and pull up on the gear Second Remove the center rail Third Remove the gear from the right side by following the same steps for the left side NOTE THIS TAB MUST BE PUSHED IN TO RELEASE THE GEAR 243
19. If compressor protection logic is running LED Lamp s blinking frequency of sub PCB which takes in charge of control can help estimate the protection logic s symptoms and the cause of its problems Comp Off Time Stroke Trip 1min Current Trip 6 Current Trip g PCB defects or Cycle clogging maybe the causes After estimating winding resistance estimate compressor operation voltage to check if there is any problem and take actions to repair cycle at replacement of compressor Stroke Trip can occur when the surrounding temperature is high C Fan F Fan and so on are constrained or when cycle problems such as moisture blocking or compressor defect are related Lock Piston Trip Since compressor itself can be a potential cause of a defect estimate the compressor resistance value according to 4175 compressor winding value estimation method and estimate the 2 s compressor operation voltage to decide whether it is defective or not Before replacement of compressor replace PCB and conduct the replacement of compressor during compressor replacement IPM fault Trip Replace sub PCB since there is high chance that it is caused by sub PCB s part defect 19 5 CIRCUIT DIAGRAM EARTH PART PLUG TYPE AND COMP EARTH PART FUSE ON CIRCUIT DIAGRAM ARE SUBJECT TO CHANGE IN DIFFERENT LOCALITIES AND MODEL TYPE POWER CORD NEUTRAL D BL 3 CAPACITOR PART DE 0 gt e
20. LG REFRIGERATOR CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL LFX25976ST COLOR STAINLESS ST LFX25976WB WESTERN BLACK LFX25976SW SUPER WHITE CONTENTS 2 1 SPECIFICA gender m 3 2 FS IDENTIFICATION Ew m 4 3 DISASSEMBLY E 5 16 REMOVING AND REPLACING REFRIGERATOR 5 2 5 DOOR eine a 6 DOOR ALIGNMENT 7 FAN AND PAN MOTOR EVAPORATOR Pen 7 DEERHOSTOONTIRHOLASSEMBLY 7 LAMP EE 8 PLI 8 MAIN PW 9 DISPENSER 9 DISPLAY eq E 9 ICE BUTTONA SSEMBIIY 9 WATER BUTTON ASSMEBEY 1
21. N Use the number to order part the position number REFRIGERATOR PARTS ER MIA ff 7 7 5 CAUTION Use the part number to order the position number DISPENSER PARTS CAUTION Use the part number to order part not the position number y STS CS V D WH WI 9 d VALVE amp WATER TUBE PARTS CAUTION Use the part number to order part not the position number ICE BANK PARTS CAUTION Use the part number to order part not the position number P No MFL4731 7027 FBE 2010 Printed in Korea
22. Short Change the sensor Replace the refrigerator Check the Temp and Other Normal resistance Table 2 Temperature table 2 gt 23 F 5 C 38 5 36 5 0 32 F 0 C 30 5 29 5 41 F 5 C 24 5 23 5 50 F 10 C 20 19 59 F 15 C 16 15 5 0 The sensor is determined the temperature For example 30kQ indicates 32 F 8 3 Sensor Error Er IS E Checking flow Result amp SVC Action Check for a loose connection Check the Blue to Blue moz other Normal Sheek he ren Temperature table 1 gt 1 2 22 F 30 C 40 5 38 5 kQ 13 F 25 C 30 5 28 5 0 ec uem 4 20 C 23 21 5 iQ 15 C 17 5 16 5 kQ e 14 F 10 C 13 5 12 5 T lt 23 F 5 C 10 5 9 5 Q 5 32 F 0 C 8 7 5 0 Bi The sensor is determined Ewa the temperature CON101 For example 23kQ indicates 4 F Display lt 101 gt 26 J oH wit 27 8 4 Defrost Sensor Error dS Checking flow Result amp SVC Action Check for a loose connection SVC Action px 0 Q Short Change the sensor r 7 the refrigerator v Check the Temp and m Omer resistance Table 3 brown to brown lt Temperature table 3 gt Temperature Resut _ 23 F 5 C 38 5 36 5 kQ 32 F 0 30 5 29 5 kQ 41 F 5 C 24 5
23. TION When lifting hinge free of latch be careful that door does not fall forward 5 Place door inside facing up down onto a non scratching surface Figure 3 Figure 1 Ut A SS M 1 Insert the tube until you can see only one of the lines printed on the tube 2 After inserting pull the tube to ascertain that it is secure 3 Assemble clip Incorrect Correct 3 2 DOOR e Door Gasket Replacement e Pillar Removal 1 Insert gasket into channel 1 Remove 2 screws Press gasket into channels on the four remaining sides of door Figure 6 2 Lift pillar up carefully e Pillar Replacement 1 Connect wire harness 3 Disconnect wire harness 2 Insert pillar into channel Inserting pillar assy into bracket door e Door Gasket Removal 1 Remove gasket Pull gasket free from gasket channel on the four 3 Assemble 2 screws remaining sides of door Figure 3 3 3 Door Alignment If the space between your doors is uneven follow the instructions below to align the doors Remove the Base Grillie Turn the leveling legs CCW to raise or CW to lower the height of the front of the refrigerator by using flat blade screw driver or 11 32 wrench Use the wrench Included with the User Manual to adjust the bolt in the door hinge to adjust the height CCW to raise or CW to lower the height Figure 8 3 4 FAN AND FAN MOTOR EVAPORATOR
24. akes about 1 minute Interval 3 CVCF interval Run by target voltage and main operating frequency and the input naturally changes according to refrigerator load 17 4 2 3 Compressor protection logic e Since linear Comp conducts linear reciprocating motion we have protection logic for compressor motor and PCB as the below Stroke Trip During the operation if stroke is above the target value decrease the target volt by 3V Current Trip Current trip is set in order to protect compressor mechanical part and drive from the overcurrent that might arise during the operation Check the current for every 416 7us and if the Trip exceeds 1 86Arms more than three times at Comp ON forcibly stop and restart six minutes later Lock Piston Trip If stroke is under 5mm even if the current is more than 14Arms Take it as piston lock and restart after 2730 of Comp OFF Check the current and stroke for every 416 7us and if the condition fits more than three times at Comp ON the Trip occurs IPM fault Trip It occurs if FO signal received from IPM is LOW For every 416 7us check whether FO signal is LOW The trip occurs if it is found three times during the five periods 83ms 4 2 4 Compressor problems diagnosis e When there is a problem or failure with the operation you are kindly recommended to check it as follows 1 Check to normality by measurement of resistance Measure the resistance between pole
25. ce Maker before Error of flow meter or water input or low water pressure or flow meter connection Temperature Fuse Disconnection Heater disconnection DRAIN Jam Poor Relay for Heater Poor BLDC Motor connection DRIVE IC and TR Poor BLDC Motor connection DRIVE IC and TR Poor BLDC Motor connection DRIVE IC and TR Poor BLDC Motor connection DRIVE IC and TR Poor Communication connection Poor TR of Transmitter and Receiver between display and main board 7 PCB Picture 7 1 Main PCB EBR67348001 2010 02 29 7 2 Display 8 Sub Display EBR67357901 2010 02 Sub PCB EBR60070707 2010 02 23 8 Troubleshooting With Error Display 8 1 Freezer Sensor Error Er FS Checking flow Result amp SVC Action Check the Blue White to Blue White Been SVCActin T ZE Temperature table 1 gt 1 To 2 22 F 30 C 40 5 38 5 13 F 25 C 30 5 28 5 4 20 C 23 21 5 5 F 15 C 17 5 16 5 KQ 14 F 10 C 13 5 12 5 23 F 5 C 10 5 9 5 0 32 F 0 C 8 7 5 KQ The sensor is determined by the temperature For example 23kQ indicates 4 F 24 8 2 Refrigerator Sensor Error Er rS Checking flow Result amp SVC Action Check for a loose connection Check White to White 25 Resut Action
26. ction Reset the unit and Input Test 1 Mode Push the button 1 time Open the refrigerator door and Check the a air flow CH Status SVC Action x While an error code is displayed Go to the 3 4 ne fan 1s not working 9095 4 Go to 5 Check the Connector Frozen caused the PCB short To protect ice short add wire seal in connector We developed new type connector so order the new type Check the Fan motor mme Frozen Lock ect LS Wire seal Silicon Part Name Old P No New EG Duct Asm 5209JA 5209JA Connector 1044A 1044A 1 2 3 1 2 SVC Action 2 Below9V Change the PCB 3 CON4 30 8 8 Condenser Fan Error Er CF ER Checking flow Result amp SVC Action Reset the unit and Input Test 1 Mode Push the button 1 time Check the fan rotating Status SVC Acti ction While an error code is displayed Check motor the fan is not working Windy Go to the 4 Check the Fan motor and surrounding Rotate fan using your hand It feel sticky change the motor GG Bet SVC Action 1 2 Below 9 V Change the PCB 2 3 Change the motor CON4 31 8 9 Communication Error Er CO Lr Checking flow Result amp SVC Action Check the Red to White Red Result SVC Action AR e e gt Check the Hin
27. d Check if the cover of the compressor enclosure in the lower front side is taken out Check if the door gasket is dirty with an item like juice Is the refrigerator level Is there too much food in the refrigerator Check if the inside of the unit is dirty Are foods with a strong odor unwrapped The unit smells of plastic e Other possible problems Check if frost forms in the freezer Check the refrigeration system Check the Thermistor Not defrosting The system is faulty The operation of the Thermistor is incorrect 61 Plug into outlet Set the switch to ON Replace the fuse If the voltage is low correct the wiring Place the unit about 4 inches 10 cm from the wall Place the unit away from these heat sources Lower the ambient temperature Put in foods after they have cooled down Don t open the door too often and close it firmly Set the control to Recommended position Place foods in the high temperature section front part Set the control to Recommended position Set the control to Warm position Seal liquid foods with wrap Put in foods after they have cooled down Don t open the door too often and close it firmly Wipe moisture with a dry cloth It will disappear in low temperature and humidity Fill up the gap Adjust the Leveling Screw and position the refrigerator in a firm place Remove the objects Fix the Drip Tray firmly in the original positi
28. e needs REMOVABLE ICE STORAGE BIN The ice storage bin can be removed to fill ice buckets coolers or pitchers LED INTERIOR LAMPS Refrigerator interior is lit by the LED array CAN STORAGE BIN FIXED DOOR BINS Ice Compartment Door 3 DISASSEMBLY 3 1 REMOVING AND REPLACING REFRIGERATOR DOORS e Removing Refrigerator Door CAUTION Before you begin unplug the refrigerator Remove food and bins from doors gt Left Door FIG 2 1 Disconnect water supply tube by pushing back on the disconnect ring 3 FIG 1 2 Open door Loosen top hinge cover screw 1 Use flat tip screwdriver to pry back hooks on front underside of cover 2 Lift up cover Disconnect door switch wire harness Remove cover Pull out the tube Disconnect the three wire harnesses 4 Remove the grounding screw 5 6 Rotate hinge lever 6 counterclockwise Lift top hinge 7 free of hinge lever latch 8 CAUTION When lifting hinge free of latch be careful that door does not fall forward 7 Lift door from middle hinge pin and remove door 8 Place door inside facing up down onto a non scratching surface Right Door FIG 3 1 Open door Loosen top hinge cover screw 1 Lift up cover 2 2 Disconnect door switch wire harness Remove cover 3 Rotate hinge lever 3 clockwise Lift top hinge 4 free of hinge lever latch 5 4 Lift door from middle hinge pin and remove door CAU
29. ergy saving function press Ice plus Energy saving Button for more than 3 seconds 6 We recommend using energy saving function when you go out for quite a long time and are out of the rainy season ICE PLUS 14 1 6 Dispenser use selection WATER PAD You can select water or ice by separated pad switch ICE PAD e When you press ice type button ice type will be changed Crush or Cube Hold your cup in the dispenser for a few seconds after dispensing ice or water to allow the last pieces of ice drops of water to fall into the cup When after initially establ ishing the water comes out the water tank inside fills and until at the time of quality the hour is caught 14 1 7 CONTROL OF FREEZER FAN MOTOR Freezer fan motor has high and standard speeds 2 High speed is used at power up for Ultra Ice 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 or load corresponding operation Ultra Ice Normal speed 2400RPM General working conditions 14 1 8 Cooling Fan Motor 1 The cooling fan is switched ON and OFF in conjunction with the compressor 2 The cooling fan Motor has high and standard speeds When room temper rapture more high then 38 speed is high 3 The Failure sensing method is the same as in the fan motor of the freezing fan
30. ess will be repeated until the fan motor operates normally If normal operation is achieved the error display is erased and the MICOM is reset automatically No signal Error Display 155 155 4 Normal drive No signal 205 158 Pause 30min Pause 30min 45 Compressor Troubleshooting Step 1 Loosen up screw of Case Assembly PCB and open Step 2 Check for blinking frequency of LED PWB the Cover PCB 61528402 17 902 If compressor is normal it does not blink Refer to the next page to find out what actions to take according to how many times LED blink 46 Actions to take according to Led blinking frequency LED operating condition Service guideline LED two time repetiton Stroke Trip on off on on off on on off repeating LED four time repetiton Overload Protect On on off on on on on off repeating LED five time repetiton Piston Lock Trip FEREN WII Off on on off repeating LED six time repetiton Current Trip off on on off repeating LED seven time repetiton IPM Fault Trip on on off on on on on on on off repeating 47 PCB Parts defect or Compress Or Connector miss
31. etected IPM Fault ree High current detected due to IPM failure 58 Bridge Diodes converts 115 AC Alternating current to 115V DC Direct current The Voltage Multiplying circuit then increases the 115V DC to 230V DC Then the IPM Intelligent Power Module converts the 230V DC to 230V AC The converted AC power can be regulated to any required voltage and frequency E Inverter FC75LANE e There is a PCB located in the PCB case next to the compressor That is the driver PCB the linear compressor A Inverter FC9OLANA IPM Voltage Check ensure proper diagnosis make sure that the unit has been plugged in for at least 10 min a Tester To determine if the compressor is receiving the He proper voltage check the PCB output voltage KU during operation A Inverter e Normal operating voltage will be between 80V ch 180 Note Higher voltage readings may occur under hd ME ec heavy load conditions 59 Insulation check Check for infinite Ohms between all compressor terminal and ground 9 450V 18uF 5 Po Power Co Common N C No Connecting 60 FC75LANE Capacitor Spec 550V 10uF 5 Po Power Common N C No Connecting NOTE Any Terminal to Ground should read Inf O Inf O 6 80 Inf
32. f a defrost cycle begins during the first minutes of Ice Plus the Ice PLUS cycle will complete its cycle after defrosting has ended If the defrost cycle begins when Ice Plus has run for more than 30 minutes Ice PLUS will run for 40 minutes after the defrost is completed 3 If Ice PLUS is pressed during defrost Ice Plus Icon is on but this function will start seven minutes after defrost is completed and it shall operate for three hours 4 If Ice Plus is selected within seven minutes after compressor has stopped the compressor compressor delays seven minutes shall start after the balance of the delay time For the rest of the 23 hours the Ice room will be controlled at the lowest temperature 14 1 12 How to set the display mode and cancel it 1 2 3 With the refrigerator door open keep pressing the Refrigerator Temp Button and ICE PLUS Button more than 5 seconds then it goes to the display mode with Special Beep Sound With Special Beep Sound Perform the same way again to cancel the display mode All Freezing unit will be turned off at display mode Exceptions Lamp Display 70 14 1 13 Defrosting removing frost 1 Defrosting starts each time the COMPRESSOR running time Betwee 7 50 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 reac
33. frigerator room lamp doesn t work Checking flow Result amp SVC Action Check the Refrigerator door switch If feel sticky Change the door s w Status Beat SVCAction _ Normal Change door S W Push Infinity Gotote3 to the 3 did 00 door S W SVC Action Bai Go to the 4 Normal TEM Y Change the PCB Status Beat SVC Action Go to the 5 Normal Change the LED Lamp RENE SVC Action Explain to customer to customer Closed EU the Door S W 12V Explain to customer to customer Other Change the LED Lamp 2537 9 6 Poor cooling in Fresh food section Checking flow Result amp SVC Action Check the sensor resistance CON4 x The sensor is determined by the temperature For example 30kQ indicates 32 F Reset the unit and Input Test 1 Mode Push the button 1 time Open the fresh food door and Check the air flow Check the air temperature Cold or not 38 RN 23 F 5 C 41 F 5 er mr elek ru c m D Status SVC Action Check the Fan motor No windy Check the damper Go to the 6 Status SVC Action Explain to customer N Id Check the Compressor And sealed system Checking flow Result amp SVC Action 1 2 Not mode working CUBE Change the damper ICI DR UN mm ii AO Other Change damper 1 to 2 270 330 Q It s normal 3 to 4 O
34. g Change PCB lt CON3 gt lt CON1 gt Point Result SC Action 31 1 42 10 Explain Replace Geared Motor 99 1219 9 99 1219 12 1 Q Explain 3 to 4 Replace Geared Motor Dispenser Motor gt 24 9 3 Water mode doesn t work Checking flow Result amp SVC Action Check the Purple to White SVC Action Go to the 3 Pushing Lever s w While pushing the lever S W Result 112 115 V CON2 Check the Blue to Gray While pushing the lever S W SVC Action 112 115 V Go to 4 Pushing Change PCB Not Go to the 4 Check the resistance value Resut SVC Action 1 2 3 4 360 4200 Explain Qe Heplace Water Valve 360 420 Explain 3 to 4 Replace omer Water Valve Dispenser Ice Maker lt Pilot Valve gt lt Water Valve gt Machine Room In door 35 9 4 Freezer room AC Bulb Lamp doesn t work Checking flow Result amp SVC Action Check the Freezer door switch If feel sticky Change the door s w Check the door S W resistance Status Result SVC Action Go to the 3 Normal Change door S W Q Push Go to the 3 S W Change door S W Check the Yellow Blue to Sky blue Result SVC Action Change the Door S W lt CON4 gt Status SVC Action Explain to customer Closed Change the Main PCB Lr 115 Change the F Lamp Change the PCB CON3 36 9 5 Re
35. ge CON101 Other loose connection Change the Main PCB Display Result SVC Action OVor5V Change the Display CON101 Display Result SVC Action OVor5V Change the Main Za gt H 101 Display Result SVC Action OVor5V Change the Display PCB Result SVC Action OVor5V Change the Main PCB Explain to customer CON5 32 9 Troubleshooting Without Error Display 9 1 Cube mode doesn t work Checking flow Result amp SVC Action Check the Black to White Lever s w Result SVC Action While pushing the lever S W Lever s w 112 115 V Go to 3 Pushin CON2 Check the Red to White Red While pushing the lever S W SVC Action 12V Go to the 4 Pushing Change Not Go to the 4 227 Change lt gt lt CON1 gt Point Resutt SVC Action 31 1 42 1 Q Explain Motor 99 12109 9 99 12109 12 1 0 3 to 4 Motor Dispenser Motor gt Checking flow Result amp SVC Action Check the Sky Blue to White USE Result SVC Action While pushing the lever S W 112 115 Go to the 3 5 o to the Pushin CON2 Check the Red to White Red While pushing the lever S W EMIT SS T Go to the 4 Pushing pushin
36. h 46 4 F 8 C in 1 hours the defrost mode is malfunctioning Refer to the defect diagnosis function 8 1 15 4 Defrosting won t function if its sensor is defective wires are cut or short circuited 14 1 14 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 ICE PLUS 0 VA EN ch d Display check function If simultaneously pressing Ultra Ice button and freezing temperature adjustment button for a second display LCD graphics on If releasing the button the LCD graphic displays the previous status You can check the error code Within 3 hour Period from initial error 14 1 15 Auto pantry 1 The temperature control will automatically start upon the selected Auto Pantry temperature control 2 You can adjust the Pantry control with three different temperature ranges by pressing the Temp Selector button 2724 9 EXPLODED VIEW amp REPLACEMENT PARTS LIST CASE PARTS CAUTION Use the part number to order part not the position number FREEZER PARTS CAUTION Use the part number to order part not the position number CAUTIO
37. ist the ice tray to drop ice into the ICE BIN Supply water to the ice tray by operating the solenoid valve D To force water to supply to the ice tray or check icemaker s condition press and hold the FILL Key for gt about 3seconds In the test mode The icemaker will run through 3 stages step by step Harvest Fill water Ice making To reset the icemaker s operation set the power switch OFF position and back it to ON position Ice Tray Ice detecting sensor Icemaker Unit 64 13 2 ICE MAKER FUNCTIONS 13 2 1 Icemaking Mode 1 Icemaking Mode begins right after the ice tray fills with water 2 Icemaker waits until water becomes ice in the ice tray x Ice detecting sensor checks if the ice bin is full every 2min 13 2 2 Harvest Mode At least in 110min since icemaker begun icemaking mode Icemaker starts to twist the ice tray to drop ices into the Ice bin After installation at least 1day is needed to make ices x If the icemaker never drop ices to the ice bin though water becomes ices in the ice tray check the real temperature of compartment not temperature on display Icemaker needs below O F to drop ices to ice bin 13 2 3 Fill Park Position Once the normal harvest mode has been completed the water solenoid will be activated 13 3 Trouble Shooting Ice amp Water system Issues 13 3 1 Icemaker not making ice or not making enough ice Environmental Diagnosis Icemaker can
38. lace parts by part number and model number Use only approved substitute parts 4 1 3 Remove the cover PTC 3 Use a L shaped flap tooll to pry off the cover 4 Assembly in reverse order of disassembly 4 2 INTRODUCTION OF E LINEAR COMRESSOR e E Linear compressor is run by mechanical part design through automatically varying the cooling power The main parts consist of compressor and Sub PCB which controls the compressor PCB authorizes constant voltage and constant frequency to the compressor and protects it 4 2 1 Control of Compressor Block Diagram PWM Compressor Controller 51918 Inverter Linear Frequ Comp 1 t ency DC link Voltage Vcap Voltage Main Counter elec Micom tromotive force v v Calculate counter electromotive force Control Block Diagram of Compressor 4 2 2 Compressor operating pattern e Drive half stroke after turning on initial power for 1 second Then Reach Target Voltage by increasing 0 35 Vrms per every 0 3 second Once reaching the target input input naturally changes according to refrigerator load without any special control Comp input Interval 1 Half stroke interval after initial running stay at the initial value for 1 second Interval 2 Running interval Increase at every O 3 till it reaches the target input it t
39. n 2 When the power is initially applied or restored after a power failure it is set to Control temperature Previously 3 If you do not press any button after turning on the power only CRUSH or CUBE Label that has been selected will be turned on and all other LEDs on the display Panel will be turned off within 60 seconds Power Save Mode 4 f you press a button only CRUSH CUBE label and Lock icon that has been selected will be turned on and all other LEDs on the display Panel will be turned off within 20 seconds Power Save Mode 5 f you do not want to use the Power Save Mode you can change the Mode by pressing the ICE PLUS Button and Freezer TEMP button simultaneously for more than 5 seconds ICE TYPE REFRIGERATOR ICE J ENERGY PLUS SAVING ssecs LIGHT FILTER ssecs PLUS SAVING se LIGHT FILTER ALARM LOCK CRUSH CUBE CUBE ICE TYPE REFRIGERATOR ICE ENERGY PLUS SAVING sss 14 1 2 How to Toggle the Display between 8 1 The initial setting is and the display temperature mode can be changed from F to or C to by pressing and holding the FRZ TEMP and the REF TEMP keys at the same time for over 5 seconds 14 1 3 Lock function dispenser and display button lock 1 When the refrigerator is first turned on the buttons are not locked LOCK is deactivated with no light on 2 To lock the display the dispenser and the control panel press and hold the LOCK button for
40. n below remove 1 case PCB fixing screw Remove the display PCB fixing screw 3 Disconnect wire harness and replace the main PWB in the reverse order of removal Case PCB Display PCB 3 11 ICE BUTTON ASSEMBLY 1 Remove the screw fixing the button lever 3 9 DISPENSER 2 Push the spring from the hanging hook to remove it 3 Apply some pressure to the rib in direction and lift the button in 2 direction 1 Pull out the darin 2 Hold the inner side of cover dispenser with both hands at the handle side to pull it out forward 3 If nozzle is interfered with button 4 Rmove the push and pull out the bottom of connected part button of Lead wire 3 12 WATER BUTTON ASSMEBLY 3 14 ICEMAKER REPLACEMENT 1 Romove screws 1 Remove the stainless screws marked in the picture 2 Grasp the Button assembly and lift up below Button Lever 2 Grasp the bottom of motor cover assembly and pull it out slowly 3 13 ICE CORNER DOOR REPLACEMENT 1 Loosen the front screw as shown in the picture 2 Lift up the hinge with one hand 3 Pull out the Ice Corner Door with the other hand 3 Disconnect wire harness from wall of compartment In door motor 10 Caution Check to see if the housing is stuck to mold and 3 16 DUCT MOTOR REPLACEMENT taped If the housing is not on its original position it will disturb Cover motor to be positioned to the unit 1 Separate the Housing of the Cap
41. nns 64 67 14 DESCRIPTION OF FUNCTION amp CIRCUIT OF 68 71 SAFETY PRECAUTIONS Please read the following instructions before servicing your refrigerator Unplug the power before handling any elctrical componets Check the rated current voltage and capacity Take caution not to get water near any electrical components Use exact replacement parts Remove any objects from the top prior to tilting the product esch gt n n 2 1 SPECIFICATIONS 25 cu ft Full Automatic LUBRICATING OIL 15010 280 ml DEFROSTING SYSTEM Heater Defrost DEFROSTING DEVICE SHEATH HEATER DOOR FINISH Embossed Metal VOM Stainless REFRIGERATOR LED Module 27 LAMP HANDLE TYPE FREEZER Bulb Lamp INNER CASE ABS Resin INSULATION Polyurethane Foam DIMENSIONS HegmtTopoCae 889989 HegntoTopoDorHmp _ _ Width door open 90 deg w o handle Width door open 90 deg w handle 2 PARTS IDENTIFICATION ADJUSTABLE REFRIGERATOR SHELVING The refrigerator compartment shelves are adjustable to allow flexibility for storage needs GALLON STORAGE BINS Bin Three interchangeable bins can be arranged to suit your storag
42. o to next step 65 13 3 2 Icemaker not making not making enough Icemaker Unit amp Ice detecting sensor Diagnosis gt icemaker Unit and Ice detecting sensor Diagnosis The icemaker unit and Ice detecting sensor is programmed to be diagnosed Follow the procedure step by step to check to see if icemaker and lce detecting sensor is working normally Icemaker Unit D Ze Se Se Se D Se D Se Se D Ice detecting sensor 1 STEP Icemaker Unit Diagnosis Press the fill key for about 3sec If the icemaker runs 2 stages of harvest and filling water step by step It means icemaker s mechanism is normal x Caution Be sure that the ice tray is not filled with water before pressing fill key 66 2 STEP Ice detecting sensor Diagnosis 5 Hold pushing Refrigerator button amp Lock button at the same time If ETY is shown on the display after the procedure above sensor is normal If FULL is shown on the display after the procedure above Ice detecting sensor is abnormal x ETY empty 13 3 3 Icemaker not making not making enough ice Other Suspected Items Strongly suspect items below If the issue remains yet though all the diagnosis for icemaker has been carried out Cap duct bad sealing Defective thermal sensor in the icemaker compartment Not cold icemaker compartment area sealed
43. on Place the cover in its original position 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 Clean the inside of the unit Wrap foods that have a strong odor New products smell of plastic but this will go away after 1 2 weeks Check Components of the defrosting circuit Perform sealed system repair Replace the Thermistor 12 3 REFRIGERATION CYCLE v Troubleshooting Chart PARTIAL LEAKAGE COMPLETE LEAKAGE J9V V11l PARTIAL CLOG r G G m 00 lt f MOISTURE CLOG COMP RESSION NO COMP RESSION NOISS3HdlNOO 3 41 2339339 12 3 1 Cleaning 5 Freezer compartment and Refrigerator don t cool normally Freezer compartment and Refrigerator don t cool normally Freezer compartment and Refrigerator don t cool normally Freezer compartment and Refrigerator don t cool Cooling operation stops periodically Freezer and Refrigerator don t cool No compressing operation STATE OF THE EVAPORATOR Low flowing sound of Refrigerant is heard and frost forms in inlet only Flowing sound of refrigerant is not heard and frost isn t formed Flowing sound of refrigerant is heard and frost forms in inlet only Flowing sound of refrigerant is not heard and frost isn t formed Flowing sound of
44. open or close When the door open lamp on When the door open the switch give information to Micom When the door open internal contact operate on and off moving plunger of door switch up and down How to Switch Freezer Switch Refrigerator Measure Button Plunger Beep Beep Check the resistance between connectors 1 2 and 3 4 It means check whether or not applying an electric current If there is resistance it means the switch not inferiority Standard Multimeter beep Switch F R Push the button Plunger Beep or 0 2 None Q 11 5 Dispenser DC Motor Function Dispenser DC Motor When customer push the dispenser button Pull duct door and abstract from ice bank How to Measure Dispensor DC Motor Standard Dispenser DC Motor 1 to 2 9 9 12 19 52 11 6 AC Motor ASSEMBLY Function How to Measure Standard The In door motor of AC motor assembly pushes ices to the dispenser In door Motor gt F 1 gen Take out the male housing from female housing Measure the resistance between 1 and 2 In door Motor gt J 1 b 4 Li E Check the resistance between connectors In door motor 1 2 and In door motor 1 3 It means check whether or not applying an Electric current If there is resistance it means the geared motor or solenoid is not inferiority Geared Motor 1 to 2 31 1 42 09 Q 53 Take out the male
45. ow to uu Set a ohmmeter to the 2 housing pin Measure p 3 p Measure the 2 pin connected to Fuse M Fuse M If the ohmmeter indicate below 0 fuse m is a good condition But infinitely great ohm Fuse M is disconnection How to p Set ohmmeter to The 2housing pin Measure Te Measure the 2 pin connected to Sensor Sensor If the ohmmeter indicate 11 at room temperature Sensor is not a defect When check the ohm at other temperature Check the sensor manual Standard Fuse M at all temperature Sensor at room temperature Test Point Test Point 1 to 2 0 049 1 to 2 48 11 2 Sheath Heater Function Sheath heater is a part for defrost All heating wire is connected to only one line So we can decide part is defect or not when we check the resistance How to Measure 1 2 Set a ohmmeter connect to The 2 housing pin Measure the 2 pin connected to Sheath Heater If the ohmmeter indicate V oV Watt HR is good condition ex when watt 350w voltage 115v 115 115 350 38 2 But the ohmmeter indicate infinitely great Sheath heater is disconnection Standard Sheath heater at all temperature Test Point 1 to 2 34 420 49 11 3 Door Heater Assembly Function The heater is designed to prevent the raising dew from door How to Measure Test Point ULT 50 11 4 Door Switch Function The switch sense if the door
46. ror Pantry sensor E error Sensor Error Er Ice maker kit Icing sensor Ice maker sensor Short or Disconnection of Pantry Sensor 55 Short Disconnectoin of rt Room temp sensor When the ice does not drop Other Electric system error even when the Test S W defect Flow Meter Sensor Defect Poor Defrosting Abnormality of BLDC FAN Motor for Ice Making esch Abnormality of BLDC FAN Motor for Freezer Abnormality of BLDC FAN MOTOR For Refrigerator Abnormality of BLDC FAN Motor for Mechanic Hoom Communication Error O1 T EN O Q Tl NS O such as moter gear Hall IC operation circuit within kit Error of flow meter or water input or low water pressure Even though it is passed 1 hour since then Defrosting if Defrosting sensor is not over 46 F 8 C it is caused It is caused when feedback signal isn t over 65 seconds during BLDC FAN motor operating It is caused when feedback signal isn t over 65 seconds during BLDC FAN motor operating It is caused when feedback signal isn t over 65 seconds during BLDC FAN motor operating It is caused when feedback signal isn t over 65 seconds during BLDC FAN motor operating Communication Error between Micom of Main PCB and Display Micom NO 15 same as model applied Twisting I
47. s of the hermetic terminal as shown picture with a multi tester measurement several minutes after power off P Power Line Common Line Case 1 1 the measured values lie in the normal resistance range as in the table below gt Compressor is normal Case 1 2 If the measured values are above several Q or a infinity Wire is disconnected in the shell Case 1 3 If the measured values are excessively of small number 9 There is short somewhere in the shell m Normal resistance range measured at ambient temperature 23 FC75LANE 6 8 2 x According to ambient temperature or operation situation the values could show a little deviation 18 2 Check to normality by measurement of Voltage Measure the resistance between pin of the connector as shown picture with a multi tester Fig 1 gt Fig 1 gt Standard for normality n order to decide whether compressor operating is normal or not check the output transfer during the refrigerator operation After input the initial power and compressor operates wait for 10 minutes to estimate Compressor operation may be diagnosed as normal if the voltage falls between 145V and 180V Warning 1 Please be cautious of electric shock and short it is estimated after turning on initial power 2 f the voltage is estimated less than 80V it is diagnosed as bad 3 Check problems by LED On amp Off Count Sub PCB
48. s until water pours out Housingg 4 Lay a dry towel on the floor and get ready to spill water from the water filter Pull out the Cilp Then press te collet to separate the tube from the connector and pour out the water until emptied g Collet Insert Line Clip 15 3 22 PULL OUT DRAWER To remove the drawer push the tabs located on the front inside surface of each rail Next gently lift the rear left and right sides of the drawer and pull it out To reinstall pull out both rails to full extension Insert the end of rib in the bracket at left and right Making sure that the guides at the front are lined up properly gently push down on both sides Bracket 16 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 Note for Usage 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 Cover PTC Compressor may fail due to breakdown of their insulating capabilities 4 Always use the Parts 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 Rep
49. stem Controls the FC90LANA Inverter Stroke A Inverter according to VVVF Modulation various conditions VVVF Variable Voltage Variable Frequency CVCE Constant Voltage Constant Frequency sp7 To reduce noise level the piston stroke is slowly increased to full power during start up Step 1 Start up Half stroke interval for first 1 second Step 2 Ramp up Stroke increases every 0 8sec until maximum stroke length is reached about 1 min Step 3 CVCF interval 180V 60Hz Stroke Power E Inverter Time Step 1 Start up Half stroke interval for first 20 seconds Step 2 Ramp up Stroke increases until maximum stroke length is reached about 1 min 40 sec Step 3 VVVF interval target voltage and frequency A Inverter controlled by Control Board signals Stroke Power Time There are 6 protection logics designed to protect the linear compressor system When a failure is detected the compressor will shut and will try to restart after a set period of time for each type of failure The LED located on the inverter drive PCB will flash the appropriate code to indicate the detected failure This code will continue to flash until the unit is disconnected from the power source Inverter Error Codes The number of Compressor current and voltage error 20sec 0 Sec Stroke Trip Piston stroke overrun detected Locked Pi E Inv Current Trip ree Current overload d
50. t make ices itself Basically water temperature and time are needed Water If no Water then no Ice Temperature The compartment where the icemaker is located has to be at least 1 F so that icemaker dumps ices to the bin Time At least 80 minutes must be passed to make one series of ices after water comes into icemaker x Test Mode should not be carried out before checking below Not making ice Water Is saddle valve turned on Check saddle valve Is the icemaker fill tube frozen Check the fill tube heater s electrical resistance Are water valve housings are connected properly Check all the water valve connection Water line kinked or damaged Is water filter too old Is Icemaker s tray filled with water or Ice Temperature Does cold air come out from air vent normally Check if Icing fan is working Is measured Check if multi duct is blocked temperature below 10 F No in the icemaker Are the R amp F room cold enough Measure the temp and Check gas leakage at the back compartment Does icemaker compartment door close tightly Time Yes How long has customer At least 120min must be passed to make ices after water comes into icemaker waited for icemaker to At least 24 hours must be passed to have ice bin full of ices not in case of make ices installation If the issue haven t resolved yet though you have checked all the items above g
51. th a soft brush to clean the grille the open areas behind the grille and the front surface area of the condenser the mechanical cover 62 12 3 2 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 None Pattern Partial Equalization Equalization Very Fast Very Slow Very Slow Fast Very Fast Inefficient Partial Complete Compressor Restriction Restriction Condenser Cap Tube Temperature Sound Hotter than Normal Faint Room Temperature None to Weak Air Low Side Loss of Change Leak Compressor Not Pumping Yes Trace of Oil No Undercharge The equalization test is trying to restart a compressor using a start kit after it has been operating 63 13 OPERATING METHOD AND TROUBLE SHOOTING 13 1 Icemaker s Basic Operating Method Start Position Adjusts Ice Tray to Start Position with power Icemaking Waits until water becomes ice Mode x For cold air circulation Ice tray will be on a slightly tilt one hour after Full Ice Check ice making mode begins Atilt ice tray means icemaker s normal operation Ice Tray slightly tilt gt f water becomes ices in ice tray Ice detecting sensor check if the ice bin is full Harvest Mode Tw
52. ther Change damper Resut SVC Action V Rotate fan using your hand SVC Action It feel sticky change the motor Motor Sticky Change the motor Cause of ice or rust inside of motor Damper checking method Test D Inputting TEST Mode d SVC Action Check the damper and PCB guy inu Mode Open Damper is normal Point Result SVC Action 1 2 3 1 2 Change the PCB prm 2 3 Change the motor CON4 39 9 7 Poor cooling Freezer compratment Checking flow Result amp SVC Action Check the sensor resistance 0ToQ Beem lt CON4 gt The sensor is determined by the temperature For example 23kQ indicates 4 F Reset the unit and input Test 1 Mode Push the button 1 time Do the freezer door and check the air Status SVC Action No windy Check the F Fan motor Check the air temperature Status SVC Action Cold or not Explain to customer N Id Check the Compressor PELO And sealed system 40 9 8 Over cooling in Fresh food compartment Checking flow Result amp SVC Action Check the sensor EES Temperature Result x The sensor is determined by the temperature For example 30kQ indicates 32 F Reset the unit and Input Test 1 Mode Push the button 1 time Checkthealrflow Status SVCAcion Check the air flow SVC Action Check the Fan No windy Check the damper Go to the 5 Input Test 2 Mode and Status
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