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REFRIGERATOR SERVICE MANUAL

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3. 12 4 Check D D1 Activate Protection logic Cycle check with protection logic We have to check Condenser fan and Freezer fan before performing Check D Locked Piston Current trip and stroke trip can be activated by other problems then the driver or compressor High Pressure Side Restricted Locked piston Low Side Restriction Over charging W Refrigerant mf Low side Refrigeration leak Refrigerant leak D2 sealed system diagnosis Check as follows When process line on compressor is opened and refrigerant is not expelled because it has accumulated in condenser fault is corrected after refrigerant is recaptured from sealed system change dryer Low side restriction can cause a stroke trip f fault is corrected after refrigerant is recaptured perform a sealed system evacuation and dryer replacement gt Check Suction line f refrigerant is overcharged and suction line temperature is lower than ambient temperature about 5 10 degrees or frost is present 150mm from where the suction line enters the compressor Temp of compressor and discharge line is normal to slightly higher High side pressure is normal to slightly higher than normal conditions This is because condenser cannot condense the air that is trapped in the condenser The high side pressure and temperature will not mimic the low side pressures and temperatures Customer com
4. REFRIGERATOR CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL LFX28979 COLOR STAINLESS ST SMOOTH BLACK SB SUPER WHITE SW CONTENTS SAFETY PRECAUTIONS MH 2 1 3 2 PARTS IDENTIFICATION 4 3 DISASSEMBLY 5 16 REMOVING AND REPLACING REFRIGERATOR DOORS 5 POOR quc EL 6 DPOORALIGNMENT c 7 FAN AND FAN MOTORIEVAPORATOR 7 DEFRHOSICGOONTEROLASOSEVIELY 7 EAD eau uM EI UI SETE ee ee me 8 MIETI UT sta saastan is ____________________________ ee 8 M m 9 DISPENSEM emt E nsa 9 rc IDEE ULUSM 9 IGE BUTTON ASSEMBLY ee NIMM ENSE 9 P zie mE 10 REPLACEMENT teo lanta bai adn ose acude 10 IGEMAKER REPLACEMENT Lasse ue 10 11 SUB PWB FOR WORKING DISPENSER essed es 11 PUT TEE 11 HOW TO REMOYVEA IEE BIN ictor det 12 HOW TO INSERTACEBIIN A sud cute 12 HOW TO REMOVE AND
5. 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 2 5 N 1 SPECIFICATIONS 1 1 LFX28979 e 28 cu ft DOOR DESIGN Side Rounded VEGETABLE TRAY Clear Drawer Type DIMENSIONS inches 35 3 4 X 35 38 X 69 34 WXDXH 28cu ft COMPRESSOR COOLING SYSTEM Fan Cooling Spiral Condenser TEMPERATURE CONTROL R 134a 140 g DOOR FINISH up REFRIGERATOR LED Module 24 o DIMENSIONS DepwoHedes a Bm IDepn toawinDoorOpgn lo asen HegutoTopofCase E Heightto Top of Door ings K 834m a Goor open 0 eg ohan T n GM Width door open 90 deg w handle a _ 44 1 4 in xm E 2 PARTS IDENTIFICATION Refrigerator Interior Key Parts and Components LED Interior Lamps The interior lamps light up the inside ot the refrigerator Dairy Product Bin Refrigerator Shelves The shelves in your refrigerator are adjustable to meet your individual storage needs Fixed Door Bins Can Storage Bin Modular Door Bins Used to preserve chilled food drinks Auto Icemaker Pullout Drawer Ice Bin Durabase Divider Durabase Special Features Smart Diagnosis Speaker Hold y
6. 48 11 4 Door Switch Function The switch senses if the door is open or closed 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 means check whether or not applying an electric current If there is resistance the switch is good Standard Multimeter Switch F R Push the button Plunger or 02 None 2 49 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 10 50 11 6 AC Motor ASSEMBLY Function The motor in the door pushed the ice into the dispenser How to Motor gt lt In door Motor gt Measure wu Separate the Z3 wi Separate the ae O housing a O housing Measure the i 2 resistance between k resistance between 1 and 2 1 3 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 Stan
7. All FAN on Everything is displayed 2 times Damper closed 22 22 displayed f e s Ht KN ITE x 3 times Forced defrost mode 33 33 displayed Main PWB 2 How to remove Terminal Position Assurance TPA AC gt DC 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 How to check 1 EBR733042 After sending a signal to the fan the MICOM 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 process 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 15 155 Normal drive No signal 205 158 Pause 30min Pause 30min 45 11 COMPONENT TESTING INFORMATION 11 1 Defrost Controller Assembly Function The controller assembly is made up of two different kinds of parts The fuse and the sensor
8. To determine if these parts are defective check for resistance The fuse will cut power to the defrost heater at very high temperatures How to Measure Fuse M How to Measure Sensor Standard Fuse M at all temperature Test Point 1 to 2 0 0 152 46 Set ohmmeter to 2 housing pin Measure the 2 pin connected to Fuse M If the ohmmeter indicate below 0 10hm fuse m is a good condition But if infinite the part is bad Set a ohmmeter to The 2housing pin Measure the 2 pin connected to Sensor If the ohmmeter indicate 11kQ at room temperature Sensor is good When check the ohm at other temperatures Check the sensor manual Sensor at room temperature Test Point to 0 11 2 Sheath Heater Function Sheath heater is a part for defrost All heating wire is connected to only one line To check if the part is defective 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 V Watt R is good condition ex when watt 350w voltage 115v R 115 115 350 38 Q But if the ohm meter indicate infinity the Sheath heater is bad Standard Sheath heater at all temperature Test Point 1 to 2 34 420 47 11 3 Door Heater Assembly Function The heater is designed to prevent the door from sweating How to Measure Test Point
9. lt CON3 gt pushing Dispenser PCB a E gt gt 292 A oun n e 3 p 4 4 UM IR m PT 4 Rus f ae Lies BC e 1 rur AA Ma c Check the resistance value SVC Action n oe 389 4209 omer Pilot Valve 360 420 Q Explain Replace Water Valve Dispenser Pilot Valve Water Valve Machine Room In door 35 9 4 Freezer room Bulb Lamp doesn t work Checking flow Result amp SVC Action Check the Freezer door switch If feel sticky Change the door s w Result SVC Action Go to the 3 Change door S W Push Infinity Go to the 3 S W Change door S W Check the Yellow Blue to Sky blue Result SVC Action are mi Go to the 4 DI 1444 Change the Door S W 1 jj Bo es Go to 4 R Change the Door S W Status Result SVC Action Explain to customer Closed Change the Main PCB 115V Change the F Lamp Change the main PCB lt CON3 gt 36 9 5 Refrigerator room lamp doesn t work Checking flow Result amp SVC Action Check the Refrigerator door switch If feel sticky Change the door s w Check the door S W resistance Status Result SVC Action o9 Go to the 3 Normal Change door S W Push Infinity Go to the 3 SW Change door S W ELE SVC Action N Go to the 4 eq orma i aed Change the PCB Status Result SVC A
10. Cools poorly Food in the Refrigerator 15 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 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 liguid 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 Tray is firmly fixed Check if the cover of the compressor enclosure in the lower front side is taken out Check if the door gasket is dirty with
11. Check B Blink 5 times Lock Piston Trip Check B3 Replace Compressor Compressor Doesn t work Hi side restriction Compressor Doesn t work Sealed Repeat zs Check Procedure p B4 LED blinks six times then repeats Current Trip amp E Inverters Protection Logic Blink Blink Blink Blink Blink Blink OFF Purpose Prevent over current overload protect Cause Ambient temperature is high over 43 and or refrigerator s condenser air movement is restricted Condenser Fan is stopped restricted discharge line compressor is damaged or IPM device is defective Logic Compressor is forced off and tries to restart after 6 minutes Protection logic Check B Replace Driver PCB Repeat N Check Procedure Compressor Intermittently works Blink 6 time Current Trip Check B4 Replace Capacitor st 227 IPM Em S CheckB5 lt N A lt m Compresso _ NG Damage a Compressor Check C3 7 Current trip Occur 58 B5 LED blinks seven times then repeats IPM Fault amp E Inverters Protection Logic Blink Blink Blink Blink Blink Blink Blink OFF Purpose Prevent high current due to IPM Short Cause Damaged IPM Dead Short Test for a dead short at Point A with a VOM Logic Compressor is forced off and tries to restart in 20 minutes Protection logic Chec
12. SVC Action 112 116 V Go to the 5 Replace Main PCB lt CON3 gt Release the test mode push the button 1 times normal Check the Blue Pin4 to Orange Pin9 at CON3 on the main PCB Explain to customer 112 116 V Replace Main PCB lt CON3 gt 28 8 6 Freezer Fan Error Er FF Checking flow Result amp SVC Action Reset the unit and Input Test 1 Mode Push the button 1 time Open the freezer door and Check the air flow Status SVC Action Action While an error code is displayed the p Check the Fan motor Rotate fan using your hand It feel sticky change the motor cause of ice or rust inside of motor Point Resut Action 2 3 Change the PCB 1 Pin8 2 Pin10 3 Pin12 1 3 Change the motor d lt CON7 gt 29 8 7 Icing Fan Error Er IF Checking flow Result amp SVC Action Reset the unit and Input Test 1 Mode Push the button 1 time Open the refrigerator door and Check the air flow While an error code is displayed the fan is not working Check the Connector Frozen caused the PCB short Check the Fan motor Frozen Lock ect fa P AN 8 1 t S J Point Result SVC Action 2 3 Change the PCB 3 1 3 Change motor 30 8 8 Reset the unit and Input Test 1 Mode Push the button
13. number REFRIGERATOR PARTS umber CAUTION Use the part number to order part not the position n DOOR PARTS CAUTION Use the part number to order part not the position number DISPENSER PARTS CAUTION Use the part number to order part not the position number B bau gt s AU hig FAN U A VALVE amp WATER TUBE PARTS CAUTION Use the part number to order part not the position number AN ICE amp ICE BIN PARTS CAUTION Use the part number to order part not the position number Ice Room Freezer Room LG Electronics Inc MFL62188061 JULY 2011 Printed in Korea
14. sensor is fixed below ice maker cube mould 2 Ice making control starts after completion of water supply control or initial control 3 At first It is judged that ice making is completed when ice making sensor temperature reaches at 8 C after 70 minutes when water is supplied to ice maker cube mould 4 Finally It is judged that ice making is completed when ice maker sensor temperature reaches below 8 C after 10 minutes in condition 3 72 14 2 4 Ice Ejection Control Function This is to eject ice from ice maker cube mould after ice making is completed 2 f Hall IC signal is on within 3 6 seconds after ice ejection motor rotates in normal direction it does not proceed ice ejection but waits If the ice bucket is full ice ejection motor rotates in normal direction in every hour to check the condition of ice bucket If the ice bucket is not full the water supply control starts after completion of ice ejection control If the ice bucket is full ice ejection motor rotates in reverse direction and sops under ice making or waiting conditions 3 If ice bucket is not full ice ejection starts The cube mould tilts to the maximum and ice is separated from the mould and ice checking lever raises 4 ejection motor stops for 1 second if Hall IC signal changes from OFF low to ON high after 3 6 seconds when ice ejection motor rotates in normal direction If there is no change in Hall IC signals within 1 minute after ice ej
15. t over 65 seconds Poor BLDC Motor connection during BLDC FAN motor DRIVE IC and TR operating Abnormality of BLDC FAN Motor for Freezer It is caused when feedback signal isn t over 65 seconds Poor BLDC Motor connection during BLDC FAN motor DRIVE IC and TR operating Abnormality of BLDC FAN MOTOR For Refrigerator O It is caused when feedback signal isn t over 65 seconds Poor BLDC Motor connection during BLDC FAN motor DRIVE IC and TR operating Abnormality of BLDC FAN Motor for Mechanic Room Poor Communication Communication Error connection Poor TR of between Micom of Main PCB Transmitter and Receiver and Display Micom TX Rx between display and main board Communication Error 20 Freezer Temperature Freezer Refrigerator Error Generation Factors Error Detection Category Temperature Temperature Error code 7 Error code Short or disconnection of the sonsor about freezer shelf Check each sonsor at it s connector Freezer Shelf Icing Ice maker Icing sensor Ice maker sensor sensor Error Other Electric system error Freezer Shelf Ice such as motor gear Hall IC When na ids not 199 maker kit defect operation circuit with in M T freezer shelf kit est S W is pressed 21 7 PCB PICTURE 7 1 Main PCB e LFX28979 EBR73304216 2011 06 22 7 2 Display 8 Sub PCB Display PC
16. 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 Check if multi duct is blocked Are the amp F room cold enough Measure the temp and Check gas leakage Is measured temperature below 10 F in the icemaker at tho back compartment Does icemaker compartment door close tightly Time 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 go to next step 68 13 3 2 Icemaker making ice or not making enough ice Icemaker Unit amp Ice detecting sensor Diagnosis p Icemaker U
17. 1 time Check the fan rotating Status SVC Action While an error code is displayed Go to the 3 the fan is not working Windy Windy Go to the 4 Check the Fan motor and surrounding Rotate fan using your hand It feel sticky change the motor Point Result SVC Action 1 Pin2 2 Pin4 3 Pin6 2 3 Change the PCB 1 3 Change the motor 201 8 9 Communication Error Er EN Checking flow Result amp SVC Action Result SVC Action Check the Hinge loose connection Change the Main PCB Result SVC Action Change the Display PCB Result SVC Action Change the Main PCB Result SVC Action Change the Display PCB aa Wa Go to 6 idw gt Ja Vds x AER t AM GAL Result SVC Action Change the Main PCB Explain to customer lt CON5 gt 32 9 Troubleshooting Without Error Display 9 1 Cube mode doesn t work EN Checking flow Result amp SVC Action Check the loose connection on the Dispenser PCB Check the Black to White on the Dispenser Ice Button Result SVC Action PCB While pushing the Ice Button 112 115 V Go to the 3 Pushin 9 Dispenser pushing Dispenser PCB CON2 Check the RED to White Red While pushing the lever S W AQ or eu 12V Go to the 4 Pushing Dispenser PCB pushing Dispenser PCB CON3 lt 1 gt Pot Resul
18. B EBR65749303 2011 05 CON103 CON102 CON101 CONS CON1 Sub PCB EBR60070707 2010 02 23 Checking flow Result amp SVC Action 4 F 20 C 23 kQ 23 F 5 C 10 kQ 8 Troubleshooting With Error Display Check for a loose connection 8 1 Freezer Sensor Error Er FS Check the Blue White to Blue White at CON7 on the PCB Result SVC Action 0 60 Change the sensor Jy OFF the refrigerator Check the Temp and resistance Table 1 y Temperature table 1 gt MA med Resm 22 F 30 C 40 kQ Ses 13 F 25 30 KQ 14 F 10 C 13 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 the White to White at CON7 on the main PCB 25 Resut SVC Action Change the sensor Replace the refrigerator Check the Temp and Other Normal resistance Table 2 Temperature table 2 gt eO Res The sensor is determined by the temperature For example 30kQ indicates 32 F Checking flow Result amp SVC Action 13 F 25 C 30 kQ 14 F 10 C 13 kQ Check for a loose connection 4 F 20 C 23 kQ 23 F 5 C 10 kQ 8 3 Icing Sensor Error Er IS Check the Blue to Blue Result Action m Change the sensor fa OFF Op
19. ED five time repetiton Piston Lock Trip on on on on on on off LED six time repetiton Current Trip on on on on off on on on on off LED seven time repetiton IPM Fault Trip on on on on on on on off on on on on on Off 63 repeating PCB Parts defect or Compress or Connector miss connecting Piston over run Piston constraint repeating Circuit Over current error Or cycle error repeating 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 replace PCB 12 5 SERVICE DIAGNOSIS CHART POINTS TO BE CHECKED REMEDY Is the power cord unplugged from the outlet COMPLAINT No Cooling
20. REINSTALL THE PULLOUT DRAWER aan aan ana aa a nannaa anna ana aa a nana naa annan 13 14 WATER VALVE DISASSEMBEY METHOD eut tl 15 FAN AND FAN MOTOR DISASSEMBLY METHOD 15 DRAWER REMOVAL 16 A ADIUSTMEN ge 17 S CIRCUIT DIAGRAM ecc 18 6 TROUBLESHOOTING 19 Tes PICTURE 20 21 8 Troubleshooting With Error DISDIAY a 22 30 9 Troubleshooting Without Error Display cease o iter osi vus 31 39 VO Reference e 40 43 11 COMPONENT TESTING INFORMATION Caps eut Eee oor deu Eco nex Ecosse eese pret Ere Ebenen eto 44 52 12 COMPRESSOR TROUBLESHOOTING oir anata a eoe Grasso eos Eepa 53 64 13 ICEMAKER OPEARTING AND TROUBLE SHOOTING METHOD enne nennen nnne nnn 65 68 14 DESCRIPTION OF FUNCTION amp CIRCUIT OF 69 72 SAFETY PRECAUTIONS Please read the following instructions before servicing your refrigerator Unplug the power before handling any elctrical componets
21. S 20 18574 NO 2 0079 Fi m E OUNAVTLNSA 30 BH YOLOW 9 j E YNIL N Bd 5 rie B 20 JUNIN 0019 JOVUNI YNIIVILNI HNSLOVSH HOLON s 30 YNILOW 0 4405 NV4 ONIOI li SNYS SIA Y amp NILON ADDENDA YJONV N ATAGOW 3113 SNOIDAY 31 NOTAS NOLLVOISIGOW V SLAPNS LNOS LINDYID 418 LNVH9I3 SIIIISNI 3113 3dAL 73400 ANY S3lLITVOO 1 LN3833IQ NI 9 OL LO3rans 3uv NO 3814 38831 V1 Y ISIN 13 381 JA 3dAL 31 393ld 131 31000W 1 YNJLOVIY 38831 Y1 Y ISIN 393ld ANY 3dAL JINAOWN G31 diNVT J LHVd HOLVOVIH Luvd H1HV3 80 9507973 A SAS AASI 19 6 TROUBLESHOOTING 6 1 Error Code Summary WARNING When checking Resistance values make sure to turn off the power and wait for the voltage to discharge NOTE Within 3 hours after the error Press the Ice Plus button and Freezer button simultaneously 3 hours after the error errors except for Er rt Er 55 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 e Wu oC Hr Ej Error Code D E Error Code Error Display Error Detectio
22. Simplify Protection Logic TEST 1 Mode A inverter Disconnect Time gt 30sec V 200 Y h OK Replace Driver PCB Check Voltage about 200V past 30second after turn on FC75 A Inverter Inverter TESTI Forced Starting TDC Full Stroke Display ON Buzz 1 time NNN Troubleshooting Not Y Cooling N LED blink 1 LED LED blink 1 1 Reset gt LED LED blink 7 7 Reset gt LED blink 7 LED blink6 Reset gt LED blink6 RT gt Y Com N Y etri N Heavy Repair 55 12 1 Check There is PC Board located in the case The control driver is PC board for the compressor This step shows the source voltage of the driver PC board Step2 Check Driver PCB Driver PCB located in machine room 56 12 2 Check B1 LED blinks once then repeats FCTO Fault A Inverter E E B HON B B E Blink OFF Blink OFF Purpose Detecting motor current and voltage error Protection Logic Check voltage at point A Motor Voltage point B Motor Current and Point C Capacitor Voltage when compressor is off Spec Points amp 2 5V 0 3V Protection logic Check B Blink 1 time FCT 0 Check B1 Out of spec 2 2 2 8V Replace Driver PCB N B2 LED blinks two times then repeats Stroke Trip A amp E Inverters Blink B
23. TALL 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 Removal of the freezer door is done by lifting clear from each side of the rail support Fully extend both rails Step 5 Remove only 1 screw of gearice and disassemble Step 6 Remove 2 screws of both side of supporter covers the bar and gearice tv and disassemble the supporter cover tv 14 3 19 2 Follow Steps to Reinstall Step 1 Insert both side of supporter cover tv into Step 2 1 Assemble a bar and gear ice with screw connector rails and then screw them 2 Push the otherside of the gear to inside of the bar Step 3 Put gear ice assembled with the bar by screw into Step 4 Insert opposite gear ice into connector rail and connector rail s hole screw them Step 5 The rail system will align itself by pushing the rails Step 6 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 Assemble them like as pictures KLT N 1 Ww TT Step 7 Reinstall the two screws into the guide rails Step 8 Reinstall the lower basket and close the freezer one from each side door 15 3 20 WATER VALVE DISASSEMBLY METHOD 3 21 FAN AND FAN MOTOR DISASSEMBLY METHOD 1 Remove screws for
24. 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 64 Plug into the 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 the objects Fix the Drip Tray firmly in the original position Place the cover in its original position Clean the door gasket Position in a firm place and level the Leveli
25. ction Go to the 5 Normal Change the LED Lamp RECEN E SVC Action Explain to customer to customer Closed Change the Door S W Explain to customer Explain to customer customer Other Change the LED Lamp 237 9 6 Poor cooling in Refrigerator room Checking flow Result amp SVC Action Check R Sensor resistance Temperature Result lt CON7 gt 59 F 15 C R Sensor is determined 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 Status SVC Action Check the F Fan motor No windy Check the Damper Go to the 5 Check the air temperature Status Cold or not Not cold 38 Damper checking method TES D Inputting TEST Mode SVC Action Check the damper and PCB ion 1Mode Open Damper is normal mu 1 2 Not mode working Change the damper NIIS SVC Action E Change damper 270 270 3309 It s normal t mia Result SVC Action Rotate fan using your hand Point Einem CHO Stuck change the motor Motor Sticky Change the motor Cause of ice or rust inside of motor Not Sticky Check the R Fan motor voltage Point Result SVC Action 1 2 Below 12V Change the PCB 2 3 Change the motor CON6 39 9 7 Poor cooling Freezer compartment Checking flo
26. dard Geared Motor Cube Solenoid 1 to 2 31 1 42 09 Q 1 to 3 31 1 42 090 51 11 7 Damper Function The damper supplies cold air from the freezer to the chill room using the damper plate The chill room is colder when the damper plate is open When the damper is closed the chill rooms temperature will rise How to Measure 0 2 1 2 2 24 OIKKEAJICW Rotation Houstns No 4 Rec j meco 12 3a 4 C Pe gr emm j 4 venett Blue White Check the 1 3 lt extension gt Check the DA Check the 1 3 Check to see if there is electrical current if there is resistance damper is good 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 good 96 and 9o 6 53 11 9 Flow Sensor Function Flow Sensor in machine room Count the water quantity from city water to water filter in refrigerator How to Measure Flow Sensor in machine room Standard 54 12 Compressor Troubleshooting PCB Check
27. eck whether FO signal is LOW The trip occurs if it is found three times during the five periods 83ms 1 Remove the Cover Back M C 3 Use a L shaped flap tooll to pry off the cover 4 Assembly in reverse order of disassembly 18 5 CIRCUIT DIAGRAM LFX28978 JONVYO JLIHMWIINVYO 1HOIHS HWOS JONVYO JN TG JONVYO T8 O8 SIND 3LIHWAVSHO HWAOS 3LIHW3 T8 HW TS INNYF LYJA MOTISA NJ3HO TAINO FSO 9019 ANS ES 3onou nana UION ANNYF OV T8 MO TISA Mg 1A UION ONVT 49 vT8 3LIHM M8 HM 3LIHM HM 1 3NNYF MOTIAAJIA 3Nnvr 3enos
28. ection motor operates ice ejection motor stops as ice ejection motor or hall IC is out of order 5 ice ejection motor or Hall IC is abnormal ice ejection motor rotates in normal direction to exercise initial operation It resets the ice maker if ice ejection motor or Hall IC is normal The mould stops for 1 second at maximum tilted conditions The mould returns to horizontal conditions as ice ejection motor rotates in reverse direction 8 When the mould becomes horizontal the cycle starts to repeat Water Supply Ice Making Ice Ejection gt Mould Returns to Horizontal 9 When freezer door is open ice ejection don t operating and after 1minute of Freezer door closing ejection control function is operated N Maximum tilting point Ice bucket is O i i not full i i HALL IC ON OUTPUT SIGNALS OFF Ice bucket is not full l HALL IC On OUTPUT SIGNALS OFF 1 1 Massi ICE CHECKING AXIS 8 0 10 32 41 53 58 80 160 170 Lock Ice making Checking Ejection Lock Original point 2 1 sec Horizontal Level Retrun Conditions Conditions lt Timing Chart During Ice Ejection gt TN 14 2 5 Test Function 1 2 It is to force the operation during operation test service and cleaning The test switch is mounted under the automatic ice maker The test function starts when the test switch is pressed for more than 0 5 second Test button does
29. en Replace the refrigerator ndo OEE j Normal resistance Table 1 N 23 Temperature table 1 gt 2 Rest _ 22 F 30 C 40 kQ Comi e 5 F 15 C 17 kQ The sensor is determined by CON101 PEN the temperature For example 23kQ indicates 4 Display lt CON101 gt 26 8 4 Defrost Sensor Error Er dS Checking flow Result amp SVC Action Check for a loose connection d SVC Action 0 Short Change the sensor the refrigerator Check the Temp and ene 190000 resistance Table 3 Check the Brown to Brown at T Temperature table 3 CON7 on the main PCB p v To Resut 23 F 5 C 38 kQ 32 F 0 30 kQ 41 5 24 kQ 50 F 10 C 19 5 kQ 59 F 15 C 16 kQ The sensor is determined by one the temperature For example 30kQ indicates 32 F 27 8 5 Defrost Heater Error Er dH EN Checking flow Result amp SVC Action EN Check the Door gasket SVC Action Gotothe3 to the 3 Check the Defrost control part Fuse M om am 22008 Controller Assembly Er Position No 400A 34 42 34 42 Q Go to the 3 1 Heater Other Change Controller Assembly Position No 400A Defrost 000 Def Heater Sensor OFF Replace product Input Test 3 Mode Push the button 3 times Check the Blue Pin4 to Orange Pin9 at CON3 on the main PCB
30. esses this gas to high temperature and high pressure gas It then delivers the gas to the condenser as the below Stroke Trip During the operation if stroke is above the target value decrease the target volt by 3V 4 1 2 Note for Usage 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 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 Replace parts by part number and model number Use only approved substitute parts Lock Piston Trip If stroke is under 5mm even if the current is more than 14Arms Take it as piston lock and restart after 2 30 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 4 1 3 Remove the cover PTC IPM fault Trip It occurs if FO signal received from IPM is LOW For every 416 7us ch
31. ift Button Lever Figure 31 Figure 33 2 Grasp the bottom of motor cover assembly and pull 3 13 ICE CORNER DOOR REPLACEMENT slowly 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 Figure 34 3 Disconnect wire harness from wall of compartment Figure 32 In door motor Figure 35 11 CAUTION Make sure that the motor housing is taped to 3 16 DUCT MOTOR REPLACEMENT Me if not positioned correctly the cover will not fit 1 Separate the Housing of the Cap Duct Motor Figure 39 2 Unscrew 3 screws to disassemble the motor Figure 36 3 15 SUB PWB FOR WORKING DISPENSER 3 When replacing the motor check the position of the door duct and the link for proper fit 1 Disconnect the wire harness Duct Door Link Cap Duct Motor 4 NG Position 2 Remove 1 screw from PWB and replace with new PWB 4 Insert 2 screws Figure 38 12 3 17 HOW TO REMOVE A ICE BIN 3 18 HOW TO INSERT A ICE BIN 1 Grip the handles as shown 1 Insert the Ice Bin slightly tilting to avoid touching the Icemaker Especially Ice Detecting Sensor Figure 44 l ON Figure 47 2 Tilt and lift slightly as shown Figure 45 3 Remove ice bin slowly Figure 46 3 19 HOW REMOVE AND REINS
32. is full of ice by rotating ice ejection motor in normal and reverse direction and eject ice into the ice bucket if ice bucket is not full v vv Conduct Ice Making Control after supplying water into the ice maker cube mould by operating water valve Water Supply Control This is for refrigerator assembly line and service When ice making test Test Control switch is pressed it operates in the following steps initial ice ejection water supply control steps 1 Turning the Icemaker stop switch off O stops the Icemaking function 2 Setting the Icemaker switch to OFF and then turning it back on will reset the Icemaker control Automatic Switch Shut off Arm TA 14 2 Function of Ice Maker 14 2 1 Initial Control Function 1 When power is initially applied or reapplied after power cut it detects level of ice maker cube mould after completion of MICOM initialization The detecting lever moves up and down 2 he level of ice maker cube mould is judged by output signal high and low signal of Hall IC Make the cube mould to be horizontal by rotating ice ejection motor in normal or reverse direction 3 If there is no change in signals one minute after the geared motor starts to operate it stops icemaker operation and check the signal every hour It resets initialization of icemaker when it becomes normal 4 judges that the initial control is completed when it judges the ice maker cube mould is horizonta
33. k B Blink 7 times Lock Piston Trip Check B5 T sS Check IPM N visual inspection Test eplace Doesn t work turn off Point Av Y 2 Compressor Y d a lt Damage 7 N NG Replace Compressor 59 12 3 Check C1 Harness Connection Check Check Process C2 Capacitor Specifications C3 Compressor Check Step 1 Power off Step 2 Check capacitor spec table1 Step3 Check resistance of point A Step 4 Check wire harness INF ohm Step 5 Check resistance at point B Step 6 Point D Power Check Check Y Harness off Capacitor at Point A wiring to Connecting Spec 6 8oh ompresso OK at Point D 6 80h Problem Problem A B B D esistance at Point B 6 8ohm Y Harness Problem heck Compresso Replace Compressor Caution Turn off power during check C Measure the resistance at each point except point C FC150NAMA Dead short check measure the resistance between power line in compressor and earth ground in refrigerator Inf Ohm Multi Tester Po Power Co Common N C Open terminal FC75LBNA 6 89 Because of ambient temperature or operating Capacitor Spec b E 450V 18 5 situations the values shown can have a slight deviation Se v 5 Hermetic terminal 60
34. l 5 ce ejection conducts for 1 cycle irrespect of ice in the ice bucket when power is initially applied 14 2 2 Water Supply Control Function 1 This is to supply water into the ice maker cube mould by operating water valve in the machine room when ice ejection control is completed and ice maker mould is even 2 The quantity of water supplied is determined by DIP switch and time WATER SUPPLY REMARKS TIME The quantity of water supplied depends on DIP switch setting conditions and Water Supply Quantity Table gt water pressure as it is a direct tap water connection type the water supplied is generally 60 cc to 100 cc DIP switch is on the main PCB 3 If water supply quantity setting is changed while power is on water supplies for the amended time If DIP switch is changed during water supply water shall be supplied for the previous setting time But it will supply for the amended time from the next supply 4 When water supply signal is applied to water and ice valves at the same time during water supply water shall be supplied to water valve If water supply signal is applied to ice valve during water supply water shall be supplied to both water and ice valves 14 2 3 Ice Making Control Function 1 Ice making control is carried out from the completion of water supply to the completion of ice making in the cube mould Ice making sensor detects the temperature of cube mould and completes ice making ice making
35. link OFF Blink Blink OFF Purpose Prevent abnormally long piston strokes C5 GND O Voltage N n Protection Logic Case 1 If compressor doesn t work and LED blinks Cause Possibly harness from compressor to PCB might be defective Case 2 If compressor works intermittently and LED blinks Cause Condenser Fan or Freezer Fan is not running Sealed system problem such as moisture restriction restriction at capillary tube or refrigerant leak Logic Compressor is forced to off and then tries to restart after 1 minute N Y Harness E lt Connecting 22 CheckC 2 7 Protection Blink 2 times logie Stroke Trip Check B2 Check B Compressor Doesn t work Replace Driver PCB Compressor Works Intermittently Repeat Check Procedure Stroke Trip Occur Check Cz 7 PN N Replace Capacitor N Compressor a N lt 7 Compressot Damage B3 LED blinks five times then repeats Locked Piston amp Inverters Protection Logic Blink Blink Blink Blink Blink OFF Purpose To detect locked piston Cause Lack of oil to the cylinder cylinder or piston damaged and or restricted discharge A Locked Piston can also be caused by foreign materials inside the compressor Logic Compressor is forced off and tries to restart within 2 5 minutes Protection logic
36. maining sides of door Figure 5 e Mullion Replacement 1 Connect wire harness Figure 6 2 Insert mullion into the channel Insert the cover assembly into bracket door Figure 7 3 Assemble 2 screws Figure 8 3 3 Door Alignment If the space between the door are uneven follow the instructions to align them Remove the Base Grillie Turn the leveling legs counter clock wise to raise or clock wise 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 9 3 4 FAN AND FAN MOTOR EVAPORATOR 1 2 Remove the freezer drawer If your refrigerator has an icemaker remove the icemaker first the plastic guide for slides on left side by unscrewing phillips head screws Remove the grille by removing 4 screws and pulling the grille forward Remove the Fan Motor assembly by loosening 3 screws and disassembling the shroud Pull out the fan and separate the Fan Motor and Bracket EAN MOTOR BRACKET MOTOR Figure 10 Ice Fan Scroll Assembly Replacement 1 Remove the plastic guide on the left side using a phillips screwdriver to remove the screws Pull off the sensor cover Remove the grill cover Gently pull on the grill assembly to remove Di
37. mechanical cover 65 12 6 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 66 13 ICEMAKER Room OPERATING METHOD AND TROUBLE SHOOTING 13 1 Icemaker s Basic Operating Method Start Position D e Adjusts Ice Tray to Start Position with power on 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 D ice making mode begins Atilt ice tray means icemaker s normal operation Ice Tray slightly tilt If water becomes ices in the ice tray Ice detecting sensor check if the ice bin is full Harvest Mode Twist the ice tray to drop ice into the ICE BIN Supply water to the ice tray by operating the solenoid valve UY To force water to sup
38. n Freezer Refrigerator Category Temperature Temperature Error code D Error code Freezer Sensor Short or Disconnection of Freezer Sensor Error Generation Factors Error Refrigerator Short or Disconnection Sensor Error of Refrigerator Sensor Defrosting Short or Disconnection Sensor Error of Defrosting Sensor Short or disconnection of the sensor about Ice maker Icing sensor Ice maker sensor Short or Disconnection of Pantry Sensor Short or Disconnectoin of Room temp sensor Check each sensor at it s connector Icing Sensor Error Pantry sensor error Temp Sensor Error Ice maker kit defect Other Electric system error When the ice does not drop such as moter gear Hall IC even when the Test S W operation circuit within kit is pressed Flow Error of flow meter or water Meter Sensor Er gF input or low water pressure or flow meter connection Even though it is passed Temperature Fuse Er dH Defect Error of flow meter or water input or low water pressure 1 hour since then Defrosting Disconnection Heater if Defrosting sensor is not disconnection DRAIN Jam over 46 F 8 C it is caused Poor Relay for Heater O Poor Defrosting It is caused when feedback signal isn t over 65 seconds Poor BLDC Motor connection during BLDC FAN motor DRIVE IC and TR operating Abnormality of BLDC FAN Motor for Ice Making i It is caused when feedback signal isn
39. ng 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 the Thermistor 12 6 REFRIGERATION CYCLE v Troubleshooting Chart PARTIAL LEAKAGE COMPLETE LEAKAGE JOVAVAIT PARTIAL CLOG O r G G m O UJ lt O O MOISTURE CLOG COMP RESSION RESSION NOISS3HdlNOO JAILLO333Gd 12 6 1 Cleaning STATE OF THE UNIT 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 refrigerant is not heard and frost melts Low flowing sound of refrigerant is heard and frost forms in inlet only Flowing
40. nit 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 Ice detecting sensor is working normally Icemaker Unit P e e gt x 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 69 2 STEP Ice detecting sensor Diagnosis 5 Push the refrigerator button amp lock button at the same time If ETY is shown on the display after the procedure above Ice detecting 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 ice 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 system 13 3 4 Not Dispensing p Clogged Ice In the Ice Bin suspected items Customer haven t u
41. not work during ice ejection and water supply It works when it is in the horizontal conditions If mould is full of ice during test function operation ice ejection control and water supply control do not work When test switch is pressed for more than 0 5 second in the horizontal conditions ice ejection starts irrespect of the mould conditions Water shall be splashed if test switch is pressed before the water in the mould freezes Water shall be supplied while the mould returns to the horizontal conditions after ice ejection Therefore the problems of ice ejection returning to the horizontal conditions and water supply can be checked by test switch When test function performs normally buzzer sounds and water supply shall carry out Check it for repair if buzzer does not sound When water supply is completed the cycle operates normally as follows Ice making Ice ejection gt Returning to horizontal conditions Water supply Remove ice from the ice maker cube mould and press test switch when ice maker cube mould is full of ice as ice ejection and water supply control do not work when cube mould is full of ice 74 15 EXPLODED VIEW amp REPLACEMENT PARTS LIST CASE PARTS CAUTION Use the part number to order part not the position number N SS SS FREEZER PARTS CAUTION Use the part number to order part not the position
42. nterclockwise Lift top hinge 7 free of hinge lever latch 8 CAUTION When lifting hinge free from the latch be careful that door does not fall forward 7 Lift door from middle hinge pin and remove door 8 Place the door with the insides facing up on a not scratch surface gt Right Door FIG 3 1 Open the door remove 1 screw on the top of the hinge cover Loosen top hinge cover screw 1 Lift up cover 2 2 Disconnect door switch wire harness and remove the 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 CAUTION When lifting hinge free from the latch be careful that the door does not fall forward 5 Place the door with the insides facing up on a not scratch surface Figure 2 Figure 3 Figure 1 Collet Tube Insert Line Clip 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 itis secure 3 Assemble clip NNN N 3 2 DOOR e Mullion Removal 1 Remove 2 screws Figure 1 2 Lift Mullion up carefully Figure 2 3 Disconnect wire harness Figure 3 e Door Gasket Removal 1 Remove gasket Pull gasket free from gasket channel on the four remaining sides of door Figure 4 e Door Gasket Replacement 1 Insert gasket into channel Press gasket into channels on the four re
43. our phone to this speaker when activating Smart Diagnosis Refer to the Smart Diagnosis section for more details 3 En A Water Filter i SA lt EE ELIT SpacePlus Ice System Automatically produces 7 80 130 ice cubes 24 hour period Crispers Controls humidity and helps vegetables and fruit to stay crisp Mullion R Folds in when the left door is opened Glide N Serve Allows you to store food items at a different temperature than the regular refrigerator area Auto Closing Hinge The refrigerator doors and freezer drawers close automatically when you push them slightly The door only closes automatically when it is open at an angle of less than 30 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 and remove the cover Pull out the tube Disconnect all 3 wiring harnesses 4 Remove the grounding screw 5 6 Rotate hinge lever 6 cou
44. plains of longer run times and poor cooling performance Lack of refrigerant can in some incidents cause piston over travel Pressure of refrigerant cycle is usually higher than ambient pressure therefore oil will flow out with the refrigerant at leak point Sealed system Check for Oil leaks Yes machine compartmen Repair leak at point where No Oil is present Welding point In Out Leakage UN Yes 1 Comp process stub emaining in drip tra Check for Oil leakage on TUE 2 Comp discharge aen Hef memo 1 S HotLine ime E t Leakage Evaporator Chen Aa 4 Drier inlet eck Temp o and Condenser 6 Evaporator inlet 7 Evaporator outlet 8 suction pipe Yes Check frost status E piel 4 Of Evaporator vaporator Inlet Heat Inlet tubing No using heat gun Comp Cond T gt Is frost pattern Ambient temp 5deg uniform 15 frost patern No Sealed System is OK Uniform Yes Sealed System is OK Yes Heavy repair 61 Compressor Troubleshooting Step 1 Open PWB cover Step 2 Check for blinking frequency of LED PWB 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 62 LED operating condition Service guideline LED two time repetiton Stroke Trip on Off on on off on off repeating L
45. ply to the ice tray or check icemaker s condition press and hold the FILL Key for about 3seconds In the test mode The icemaker will run through 3 stages step by step Harvest Fill water Ice making Toreset the icemaker s operation set the power switch OFF position and back it to ON position Ice Tray Ice detecting sensor Icemaker Unit 67 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 starts to twist the ice tray to drop ices into the 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 p Icemaker can t make ices itself Basically water temperature and time are needed Water If no Water then no Temperature The compartment where
46. sconnect the wiring harness Remove all screws on the scroll assembly 2 3 4 5 6 x Figure 11 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 46F 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 12 2 Separate the connector with the Defrost Control assembly and replace the Defrost Control assembly after cutting the Tie Wrap Figure 13 DEFROST CONTROL ASSEMBLY GRILLE ASSEMBLY Figure 12 Figure 13 3 6 3 6 2 Freezer Compartment Lamp Unplug or disconnect power at the circuit breaker 1 Unplug refrigerator power cord form outlet If necessary remove top shelf or shelves 2 Remove screw with driver 3 Grasp the cover Lamp pull the cover downward 3 6 1 Refrigerator Compartment Lamp 1 Release 2 screws 2 Hold both ends and pull down to remove Figure 18 Figure 14 3 To remove the lamp case and cover release 2 screws as shown 3 7 MULTI DUCT 1 Romove the upper and lower caps with a flat screwdriver and remove 2 screws Figure 19 Figure 15 2 Disconnect the lead wire on the bot
47. sed 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 Hecommend to use regulator to the customer and close the shutoff valve slightly p 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 70 14 ICE MAKER Freezer Room OPERATING METHOD AND TROUBLE SHOOTING 14 1 Working Principles 14 1 1 Ice Maker Working Principles Power Input Initial Control Ice Making Control e Level Ice Maker Cube Mould for Initial Control after power is input Wait until the water in the cube mould is frozen after ice maker starts operation Ice Ejection Control Check ice bucket
48. 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 you need to clean the condenser Remove the mechanical cover Use a vacuum cleaner with a soft brush to clean the grille the open areas behind the grille and the front surface area of the condenser Replace the
49. t SVC Action 31 1 42 1 Q Explain Heplace AC Indoor Motor 9 9 99 1219 12 1 99 1219 Explain 3 to 4 Replace AC Indoor Motor AC Indoor Motor gt lt Dispenser Motor gt 33 9 2 Cube mode doesn t work Checking flow Result amp SVC Action Check the loose connection on the Dispenser PCB Check the Skyblue to White on the Dispenser Ice Button Resut SVC Action PCB While pushing the Ice Button 112 115 V Go to the 3 Pushin Dispenser pushing Dispenser PCB CON2 Dispenser PCB CON3 lt CON1 gt poit Result SVG Action 31 1 42 1 Q Explain Replace lt AC Indoor Motor gt 9 9 99 12109 12 1 99 12109 Explain 3 to 4 Replace AC Indoor Motor Check the RED to White Red While pushing the Ice Button Ice Button Action Pushing Dispenser PCB Not Go to the 4 OTT AM pushing Dispenser Motor gt 24 9 3 Water mode doesn t work EN Checking flow Result amp SVC Action Check the loose connection on the Dispenser PCB Check the Purple to White on the Dispenser Water Button Result SVC Action PCB While pushing the Water Button 112 115 V Go to the 3 Pushing Dispenser PCB pushing Dispenser PCB Check the Blue to Gray on the Dispenser Water Button lt CON2 gt SVC Action PCB While pushing the Water Button Resut 112 115 V Go to the 4 Expo mp Pushing Dispenser
50. the Drain Pipe Assembly and the 1 connected to the Motor Cover m 2 Separate the Fan Assembly and Motor turn counter clockwise to remove from the motor shaft 1 Turn off the water to unit Remove the waterline from the valve MOTOR COVER Figure 64 FAN ASSEMBLY MOTOR Figure 61 3 Separate the housing and remove the valve Assemble in reverse order Taking care to avoid 1 Do not to bend the tube during assembly 2 Press the Water Dispenser button letting water pour out this checks for any leaks in the tube connection this may vary depending on the water pressure about 2 minutes Housing Figure 62 4 Remove the clip and press the collet to separate the tube from the connector Note there maybe some water in the line i Collet Tube Insert Line Clip Figure 63 16 3 22 Drawer Removal Fully extend the drawer and lift from the front pulling straight out Figure 66 To install the drawer back into the frame tilt the front sightly and pushingt back into place Figure 67 175 4 ADJUSTMENT 4 1 COMPRESSOR 4 2 3 Compressor protection logic 4 1 1 Role Since linear Comp conducts linear reciprocating motion we have protection logic for compressor motor and PCB The compressor intakes low temperature and low pressure gas from the evaporator of the refrigerator and compr
51. tom position 4 Use a flat tool as shown below to remove the lamp cover Figure 19 Figure 16 5 To remove the LED assembly pull apart the cover Case lamp Cover lamp LED Assembly Figure 17 3 8 MAIN PWB 1 Loosen 3 screws on the PWB cover 4 a vis NA KC E 1 Figure 26 Figure 27 4 Holding the inner side of 5 Remove the the dispenser pull lead wire forward to remove Figure 20 CAUTION When replacing the dispenser cover make 2 Remove the PWB cover sure the lead wire does NOT come off and the water line is not pinched by dispenser Figure 28 Figure 21 3 Disconnect wire harness and replace the main PWB in 3 10 DISPLAY PCB the reverse order of removal As shown below remove 1 screw on the PCB fixing screw the display PCB fixing screw Figure 22 VA Figure 29 Case PCB Display PCB 3 9 DISPENSER 3 11 ICE BUTTON ASSEMBLY 1 Remove the 1 screw holding the lever 2 Remove the spring from the hook 3 Push and pull on the tab to remove Figure 23 Figure 24 1 Pull out the drain 2 Use these 2 holes to pull out the bottom Figure 25 3 If nozzle is interfered with button push and pull out the bottom of button and then pull out the right side 10 3 12 WATER BUTTON ASSMEBLY 3 14 ICEMAKER REPLACEMENT 1 Remove screws 1 Remove 4 screws as shown 2 Grasp the Button assembly and l
52. w Result amp SVC Action Check the F Sensor resistance Temperature 22 F 30 40 13 F 25 C 30 kQ 7 4 F 20 C 23 k lt CON7 gt 14 F 10 C 13 kQ The Sensor is determined 93 F 5 10 the temperature For example 23kQ indicate 4 F 32 F 0 C Reset the unit and Input Test 1 Mode Push the button 1 time Open the freezer door and Check the air Status SVC Action flow Check the F Fan motor _ CC Status SVC Action Cold or not DAG UTA Explain to customer N Id Check the Compressor oreo And sealed system 40 9 8 Over cooling Refrigerator room Checking flow Result amp SVC Action Check the R Sensor resistance Temperature Result CONT 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 No windy Check the R Fan Check the damper Go to the 5 med Status SVCAcion Check the air flow AG TANT push the button 1 more time Go to the 5 Test 270 270 330 2 Wsnomal normal M dul damper 270 330 Q Change damper Refrigerator room door and Check Status SVC Action the air flow 41 10 Reference 10 1 TEST MODE and Removing TPA 1 How to enter the TEST MODE Push the test button on the Main PCB to enter the TEST MODE 1 time Comp Damper

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