LTC22350ST /01 - Appliance Factory Parts
Contents
1. CON3 CON1 CON 31211 111091817 1651413121 112131415 1617 SB BN YL BL BL BK SB BN POWER SB BN YL BL BL BK SB BN SUPPLY CORD Di gt 1 fo _ Bh yea i 14 8 8 Sn d CAPACITOR PART Ol fe Le B E PK Og E Qe dei ea po e B z 128 de RJ 2 3 Ez 9 Yr x 0 amp 8 a EU Z xo m x 5 BK ot gu 25 8 E 4 IO 1 2 G T 57 82 i 3 NODE E id jii BL L GN BL BL Ae cal x on L BL 233 23 22 28 PTC PART 1915 O ON PWB PCB ASSEMBLY ICE MAKER SUBE ACCESSORIES 7 MAKER PART FIGURE 1 8 2 2 Load and Door Light Circuit HV 1 Load Drive Condition Check To measure outputs of the control board check voltages between the pins for the following components Refer to figure 1 Output CONNECTOR 1 Voltage PIN 11 9 7 5 3 j 1 j COMP Compressor Con 1 Pin 1 Con 1 3 115 VAC LM nam N Defrost Heater Con 2 Pin 7 Con 1 Pin3 115 RLAMP Con2Pin3 ConiPin3 iisVAC L PIN 1 3 O 5 7 Ice Maker Con i Pin 7 Con 1 Pin 5 115 VAC NOTE When the door of the refrigerator is left open for 7 minutes or longer the lamp of the refrigerator turns off aut2. 12 MANIA A aes 12 3 12 Control Box RefrigeratOn m aE mendes 12 tQ cR GU A FRAG E RRAS za D QU cu OUR 13 4 1 5 0 eee 13 A 2 aed Ec M 13 OUP Overload PEOIGOIOE putas ab epo tend cU O ENa EN 14 4 4 To remove the Cover n nennen a nnne nnns nnns 14 5 uada Gate AQ OU RUD QURE LR 15 6 TROUBLE 16 6 1 Compressor and electric components sesessusssssesssssssseee neret nne nennen 16 0 2 PTC and OUP mE Mr TR 17 6 3 Other electrical components sssssssssssse eene 18 o Service diagn sis dul dr md ad Su uM dra dedu tus aM HUNE 19 6 9 Refrigeration Cycle aii ra aa a a a a a 20 7 OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER 21 7 1 Operation p
3. 1 The PTC is attached to the Sealed Compressor and is used COMBO KIT for starting the motor DIAGRAM 2 The compressor is a single phase induction motor During i the starting operation the PTC allows current flow to both the a start winding and main winding 4 2 3 Combo TSD BK TSD Time Starting Device is a new electronic starting system for high efficiency compressors due to the following n lL characteristics aC 1 Combo concept overload protector electronic board and cover in a single casing 2 Fully electronic concept 3 Full integration of starting and protection devices 4 Free from mechanical and electromagnetic noises COMBO KIT PTC OLP 13 4 2 6 Motor Resarting and Combo Cooling 4 3 2 Role of the OLP 1 It requires approximately 5 minutes for the pressure to 1 The OLP is attached to the sealed compressor used for the equalize before the compressor can restart refrigerator It prevents the motor coil from being started in the 2 The PTC Combo device generates hea during operation compressor Therefore it must be allowed to cool before the compressor can 2 For normal operation of the OLP do not turn the adjust screw restart of the OLP in anyway 4 2 7 Relation of PTC Starter Combo and OLP 1 If the compressor attempts to restart before the PTC Combo device is
4. 2 7 sec well as the water pressure of the connected water line 3 8 sec L 1 22 7 2 5 Function TEST 1 This is a compulsory operation for test service cleaning etc It is operated by pressing and holding the Cube Size button for 3 seconds 2 The test works only in the Icemaking Mode It cannot be entered from the Harvest or Fill mode If there is an ERROR it can only be checked in the TEST mode 3 Caution If the test is performed before water in the icemaker is frozen the ejector will pass through the water When the fill mode begins Stage 4 unless the water supply has been shut off added water will overflow into the ice bin If the control Doesrit operate normally in the TEST mode check and repair as needed 4 After water is supplied the normal CYCLE is followed icemaking gt Harvest gt Fill gt Park Position 5 Five seconds after Stage 5 is completed the icemaker returns to MICOM control The time needed to supply water resets to the pre test setting Diagnosis TABLE STAGE ITEMS INDICATOR REMARKS Five seconds after heater starts heater will 1 HEATER go off if temperature recorded by sensor is 10 C 50 lever is in up position Five seconds after heater starts you can 2 confirm that mot
5. Heavy frost buildup on EVAPORATOR Check current flow in the following components Sensor Fuse M Replace indicated component Check current flow in the Defrost Heater Replace Defrost Heater 18 6 4 SERVICE DIAGNOSIS CHART COMPLAINT SYMPTOM POSSIBLE CAUSES SOLUTION Electronic Display not 1 No Display at all operating correctly Supply voltage not within specifications 1 Check supply voltage to refrigerator Open in wiring harness from PWB board 2 Chack wiring and connectors to PWB board Open in door monitor switch circuit 3 Check door monitor circuit 2 Partial or abnormal display Supply voltage not within specifications 1 Check supply voltage to refrigerator Open wiring harness from PWB board 2 Chack wiring and connectors to PWB board Not cooling 1 Display on but compressor not operating Compressor not operating 1 Check for compressor operation by using the test key on main circuit board Open in compressor circuit 2 Check for open on OLP PTC compressor wiring etc Not cold enough 1 Display on compressor is Condenser fan motor not operating Check condenser fan motor and wiring circuit operating Condenser coils blocked Check air flow across condenser Evaporator fan motor not operating Check evaporator fan motor and wiring circuit Internal air flow blocked Check air ducts Sensor not operating properly Check refrigerator and
6. intermittent problem 20 Replace Compressor Confirm refrigerant amount None or too much Recharge refrigerant check correct quantity Gas leakage No frost normally Restriction Frost formed normally Frost formed normally Finished OK 7 OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER 7 1 OPERATION PRINCIPLE 7 1 1 Operation Principle of Ice Maker Adjusts Ejector to Start Position with power on Start Position Icemaking Mode Harvest Mode Park Position Test Mode 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 Waits until water becomes cold after starting the Icemaking operation Runs MOTOR to drop ice from the tray into the ICE BIN Performs Icemaking Mode after supplying water by operating the SOLENOID in ICE VALVE wo v v9 v wy With the detect lever checks if the ICE BIN is full To operate LINE and SERVICE press and hold the Cube Size button for 3 seconds The icemaking will run through 3 stages Harvest Fill Icemaking Cube Size button Power On Off Switch safle 7 21 MAKER FUNCTIONS 7 2 1 Ice Making Mode 1 Icemaking refers to the freezing of supplied water in the ice trays Complete freezing is assured by measuring the temperature of the Tray with icemaking SE
7. 13 Using 10mm or 13 32 inch socket wrench remove the 3 bolts and lift off the Top Hinge see Fig 14 Set parts aside Top Hinge Turn freezer door upside down on a non scratch surface and loosen the screw to remove Door Closer Stop and Hinge Pin Insert see Fig 16 Fig 16 Door Closer Stop Move the Hinge Pin Insert Bracket to the other side of the door keeping the same orientation and move the Hinge Pin Insert into the hole on the left side of the bracket Fig 17 Hinge Pin Insert Hinge Pin Insert Bracket Reverse Door Closer Stop by flipping over see Fig 18 place on top of Hinge Pin Insert Bracket and tighten both down with the screw Pry off cover on top of refrigerator on left side to uncover screw holes Fig 19 Set freezer door and Top Hinge parts to the side and remove refrigerator door Cover on top of refrigerator Fig 19 3 6 REVERSE AND REATTACH REFRIGERATOR DOOR Remove base grill e Using a inch socket wrench loosen and remove Remove the washer from the Bottom Hinge Pin Fig 22 Hinge Pin from the Middle Hinge Pin Bracket Remove washer underneath the middle hinge and e Using a inch socket wrench loosen and remove set aside the Hinge Pin from the Bottom Hinge Reattach the Hinge Pin to the opposite side of the Hinge NOTE At this point the door will be loose lift up cca Fig s door slightly and remove it
8. 14 5 CON6 CON8 N 1 CON4 coN7 4 CEAN SB 2 2 DEF SENSOR BN 3 3 IBO PR 4 4 F FAN GY 5 PWB PCB ASSEMBLY MAIN 5 wil 6 6 WH 7 7 R SENSOR 8 8 9 10 CONS CON1 CON2 31211 111091817 65143121 112131415 67 5 YL B BL BK SB BN MN SB BN YL BL BL BK SB BN SUPPLY CORD D Ds v gt H uo Ct aw PS ea De eee CAPACITOR PART ele it PK jm 1 Og 8 ie GB Bc gt EL wem mentes A RD 29 29 2 n x amp d RD m l i E iB i5 ag EM 5 E IO uz EE f GN 2 e T TUI 3 6 BL GN Bu BL 23 32253 z4 19 deed gus qo POEM j 93119 o OF a pee PWB PCB ASSEMBLY ICE MAKER COMP ACCESSORIES 007 7 7 TCE MAKER PART P C OPTION RES LD LQ COMP EGCOMP PLUG TYPE ICE MAKER PART CAPACITOR PART EN P T C COMP ACCESSORIES AND COMP EARTH PART ON CIRCUIT DIAGRAM ARE SUBJECT TO CHANGE IN DIFFERENT LOCALITIES AND MODEL TYPE m PTC OLP BK BLACK GN GREEN GY GRAY GN YL GREEN YELLOW YL YELLOW PK PINK WH WHITE BL WH BLUE WHITE SB SKY BLUE BO BRIGHT ORANGE BL BLUE BK WH BLACK WHITE BN BROWN PR PURPLE RD RED RD WH RED WHITE 15 6 TROUBLESHOOTING 6 1 COMPRESSOR AND ELECTRIC COMPONENTS gt Power Source Remove PTC Starter Comba from compressor and measure voltage between Terminal C of compre
9. Gently pry o the Top Hinge Cover with a at head screwdriver and remove see Fig 1 Using 10 mm or 13 32 inch socket wrench remove the 3 bolts and lift o the Top Hinge see Fig 2 Set parts aside Lift freezer door slightly and remove it Fig 3 Set aside To replace doors begin with refrigerator door and then follow with freezer door 3 3 REPLACE REFRIGERATOR DOOR Set door onto Bottom Hinge Pin Place Upper Hinge s Pin in the top of freezer door and line up the Upper Hinge with holes in top of refrigerator Use the 3 bolts to replace Hinge Fig 10 Place Hinge Pin of Middle Hinge Bracket inside Hinge Pin Insert on top of door Fig 7 Hold door in place and line up the Middle Hinge Bracket with the holes in refrigerator housing Carefully force t Top Hinge Cover back into place over Hinge Fig 11 Use the 2 bolts and phillips screw to refasten the Middle Hinge Bracket and door to the refrigerator housing Fig 8 A WARNING ELECTRICAL SHOCK HAZZARD Before you begin either unplug the refrigerator or turn o power at the circuit breaker or fuse box Remove 3 4 REPLACE FREEZER DOOR food and any Adjustable Door or Utility Bins from doors Failure to do so could result in death or serious injury Set the freezer door onto the Middle Hinge Pin Fig 9 3 5 REVERSE FREEZER DOOR Gently pry off the Top Hinge Cover with a flat head screwdriver and remove see Fig
10. bracket Tighten Hinge Pin Bracket to door Fig 28 Fig 28 Hinge Pin Bracket Hinge Pin Insert Take Door Closer stop and flip see Fig 29 Line up screw holes and mount on left side of door bottom with the two screws Turn door upright It is now ready for re attaching NOTE The Refrigerator Door Closer Stop is not used on all models The model you have may not include this part Fig 29 With flat head screwdriver carefully pry off and remove the cover over the screw holes on the left side of refrigerator housing Fig 30 Fig 30 A Remove the outer lower Decorative Screw from housing at area between freezer and refrigerator doors Fig 31 You will need this hole for the Middle Hinge Bracket Fig 31 N diio Following illustration flip the Middle Hinge Bracket Flange will now be on top and position on left side of refrigerator and re attach with two bolts and a Phillips screw Fig 32 Place refrigerator door down over pin on bottom hinge Fig 32 Place washer between refrigerator door and middle hinge and re attach Hinge Pin to Hinge Bracket with 1 4 in socket wrench NOTE Bracket has been flipped but Hinge Pin stays in the same orientation with its hexagonal end facing upward See 7 Middle Hinge lt Bracket Place Decorative Screw into outer hole on right side of housing Attach
11. door closing 1 Gently pry off the Top Hinge Cover with a flat head screwdriver and remove Loosen the Top Hinge Bolts Your refrigerator has two Front Leveling Screws one on using a 10 mm or 13 32 in socket wrench or the right and one on the left If your refrigerator seems open end wrench unsteady or you want the doors to close easily 2 Have someone hold the freezer door so the space adjust the refrigerator s tilt using the instructions below between the two doors is even and retighten 1 Plug refrigerator power cord into a 3 prong grounded the top hinge bolts outlet Move the refrigerator into its final position 2 Remove the base grill The two Leveling Screws are located on the bottom of the refrigerator on either side see Fig 39 3 Insert a flat screwdriver in slots to adjust the Leveling Screws Fig 39 Turn the leveling screw clockwise to raise that side of the refrigerator or counterclockwise to lower it It may take several turns of the Leveling Screw to adjust the tilt of the refrigerator NOTE Having someone push against the top of the refrigerator takes some of the weight off the Leveling Screws This makes it easier to adjust the screws Fig 39 3 Replace the Top Hinge Cover 4 Open both doors again and check to make sure that they close easily If not tilt the refrigerator slightly more to the rear by turning both Leveling Screws clockwise It may take several more turns an
12. 4 Turn the lamp counterclockwise 5 Assemble in reverse order of disassembly Replacement bulb must be the same specification as the original Max 40 W 1EA 3 12 CONTROL BOX REFRIGERATOR 1 First remove all shelves in the refrigerator Then remove the Refrigerator Control Box by loosening 2 screws jo 1 0 N x COVER LAMP Fig 44 2 Remove the Refrigerator Control Box by pulling it downward 3 Disconnect the lead wire on the right position and separate the lamp sockets 12 4 COMPRESSOR ELECTRICAL 4 1 COMPRESSOR 4 2 4 Role of Combo TSD 4 1 1 Role 1 The combo is attached to the sealed compressor and is used for the operation and protect the motor The compressor intakes low temperature and low pressure gas 2 The compressor is a single phase induction motor During from the evaporator of the refrigerator and compresses this gas the starting and operation the combo allows current flow to both to high temperature and high pressure gas It then delivers the the start and main winding gas to the condenser RENE 4 2 5 PTC Combo Applied Circuit Diagram 4 1 2 Composition Starting Method for the Motor The compressor includes overload protection The PTC starter and OLP overload protector are attached to the outside of the r compressor Since the compressor is manufactured to tolerances of 1 micron and is hermetically sealed in a dust and CAPACITOR PART moisture free environment u
13. ANCE SPECIFICATION OF SENSOR Con 7 Pin3 Con 7 Pin 4 Con 7 Pin 5 Con 7 Pin 6 Con 8 Pin 1 Con 8 Pin 2 To measure the outputs of the fans on the control boards check the voltages between the pins for the following components OUTPUT VOLTAGE MOTOR ON MOTOR OFF Freezer Fan Con 4 pin5 Con4 pin 6 10 14 VCD 2 VCD or less Cooling Fan Con 4 pin 2 Con 4 pin 3 10 14 VCD 2 VCD or less CONNECTOR 4 LPN 1 2 3 4 5 6 7 8 j 9 10 C FAN F FAN N C N C G F G v vc wc wc wc 29 8 3 RESISTANCE SPECIFICATION OF SENSOR TEMPERATURE DETECTED RESISTANCE OF REFRIGERATOR SENSOR DEFROST SENSOR 20 77 KO 3 73 15 60 KO 3 49 10 47 3 3 22 5 38 4 2 95 0 30 KQ 2 67 5 24 1 2 4 10 19 5 2 14 15 15 9 KQ 1 89 20 13 1 66 25 11 KQ 1 46 30 C 8 9 KQ 1 27 40 C 6 2 KO 0 96 50 c 4 3 KQ 0 72 The resistance of the SENSOR has a 5 common difference Temperature of the SENSOR must be stabilized for minimum of 3 minutes before accurate measurement can be taken 30 EV CAUTION Use the part number to order part not the position number 9 EXPLODED VIEW CASE PARTS N WWMM W _ SN 31 EV FREEZER PARTS CAUTION Use the part number to order part not t
14. Color White Stainless Dimensions Climate class Rated Rating 4 Cooling System Bj Temperature Control P 8 u Condenser Lubricanting Oil Drier Capillary Tube Anti freezing Heater Case Material Door Material PCM B Lamp Tray meat Yes Tray Egg No Basket Quantity Plastic 2 ui ni Lamp Shelf Wire 1 Co 1 2 2 PARTS IDENTIFICATION Use this section to become more familiar with the parts and features Page references are included for your convenience NOTE This guide covers several different models The refrigerator you have purchased may have some or all of the items listed below The locations of the features shown below may not match your model CustomCube Ice maker Freezer Door Bin Freezer Shelf o Dairy Corner Q Digital Sensor Control Ocan Dispenser Q Refrigerator Light Q Door Bin E Snack Pan b Refrigerator Door Rack Shelves ase Grille crisper Qo Vitabox Inside Keeps fruits and vegetables fresh and crisp On some models 3 DISASSEMBLY 3 1 REMOVE FREEZER DOOR 3 2 REMOVE REFRIGERATOR DOOR Loosen and remove the 2 bolts and the phillips head screw to remove the Middle Hinge Bracket from refrigerator housing Fig 4 and 5 Set parts aside
15. Fig 20 and 20a NOTE This is easier to do while the Hinge is still attached Loosen and remove the 2 bolts and the phillips head screw to remove the Middle Hinge Bracket from refrigerator housing Using 10 mm or 13 32 inch socket wrench Fig 21 Set parts aside with 2 inch extension loosen the 3 bolts and remove the Bottom Hinge from right side of housing Fig 23 0 d At this point remove the Decorative Bolt on bottom on refrigerator housing from the left side of refrigerator Fig 24 You will need this hole for the Bottom Hinge Fig 24 deu 0 Move the Bottom Hinge to the left side of housing keeping the same orientation and reattach with 3 bolts Fig 25 Now move Decorative Bolt to hole on lower right side of housing Turn refrigerator door upside down on a non scratching surface With door upside down loosen the 2 screws and remove the Door Closer Stop Fig 26 then loosen the other two screws to remove the bottom Hinge Pin Insert Bracket with Hinge Pin Insert see Fig 27 NOTE The Refrigerator Door Closer Stop is not used on all models The model you have may not include this part Door Closer Stop Hinge Pin Bracket Hinge Pin Insert Take out the Hinge Pin Insert and move the Bracket to the other side of the door keeping the same orientation Fig 28 Place Hinge Pin Insert into the left side of the
16. LG REFRICERATOR CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODELS LTC22350ST 01 LTC22350SW 01 CONTENTS WARNINGS AND SAFETY PRECAUTIONS nennen enne nri nnns nnn 2 T SPECIFICATIONS p cian Lua atr rds Cod D adc cdm dpa ac Fh 3 2 PARTS IDENTIFICATION nennen nnnm ness 4 DISASSEMBLY iiir a va Ro Xx ba rer quM Faft A Tap RDUM x 5 3 Remove Freezer Bro 5 3 2 Remove Refrigerator 5 3 3 Replace Refrigerator 6 3 4 Replace Freezer Door sssssssssssss eee nnnnnnrnnrnnnnnnnn nnne nnne nnns nsn nn sn nesn ness nnns 6 3 5 Reverse Freezer rere ka are ted rad Civ ovas COL 7 3 6 Reverse and Reattached Refrigerator 8 tevelingiand reec got T 11 39 8 NR E tO o DEUM 11 3 9 Fan and Fan 12 3 10 Defrost Control ASSermibly
17. NSOR 2 Icemaking starts after completion of the water fill operation 3 The icemaking function is completed when the sensor reaches 7 C 60 to 240 minutes after starting NOTE After icemaker power is ON the icemaker heater will be on for test for 9 sec 7 2 2 Harvest Mode 1 Harvest Ice removing refers to the operation of dropping ices into the ice bin from the tray when icemaking has completed 2 Harvest mode 1 The Heater is ON for 30 seconds then the motor starts 2 Harvest mode is completed if it reaches start position again while Heater amp Motor are on at the same time A ice bin is full The EJECTOR stops heater off B ice bin is not full The EJECTOR rotates twice to open for ice NOTE If the EJECTOR does not rotate once within 5 minutes in status 2 separate heater control mode starts operating to prevent the EJECTOR from being constrained It is recommended that the user open for ice to return to normal mode 7 2 3 Fill Park Position 1 Once a normal harvest mode has been completed the water solenoid will be activated 2 The amount of water is adjusted by pressing the fill key repeatedly This changes the time allowed for fill as illustrated in the table below Water supply amount table STAGE TIME TO SUPPLY INDICATIONS REMARKS 1 6 sec The water amount will vary depending on the water control switch setting as
18. Operate max 1 Hr Push the test button Reset to the default settings Once while in TEST Compressor will delay 7 RESET MODE 2 minutes for Power ON Demonstration MODE 1 To enter this mode open refrigerator and freezer door press both door switches display will turn off at the same time press Temp Adjust button for 5 seconds 2 The LED panel will blink sequentially 1 2 3 4 5 to indicate that the compressor fans and defrost heaters are not operating 3 The Lamp work normally 4 To reset to Normal Operating Mode repeat step 1 5 If a Power Failure occur and the OFF MODE was active it going to start in OFF MODE 6 When the off mode is disable the display show the notch 3 restart 26 8 2 PCB FUNCTION Con 2 Con 3 Con 1 d duvi wang luces aw a N p E m o o o o zz 20 ime dcs m
19. ae Amoa S arasat wevangizena C r ad O g e lo d lo o 2110 B a 19 839116 o7 J o BE one D 537778 1 J0 8 1166 ef i 5139 ij sooth lt TOO 3 a 3 LIT aaa LE fe Ces m eno 1139 in s s s oooooooooQ oooooQ ooooooooooQ oooooooQ moe et meee 1 100 9318 MiS 22 2974816 2972819 ane a _ f Con 2 Con 5 6 7 27 8 2 1 Power Circuit Power is supplied to the control board at the pin 11 and 9 of connector 1 Refer to figure 1
20. cooled the PTC Combo device will allow current to flow only to the main winding 2 The OLP will open because of the over current condition Thissame process will continue 3 to 5 times when the compressor attempts to restart until the PTC Combo device has cooled The corret OLP must be properly attached to prevent damage to the compressor Parts may appear physically identical but could have different electrical ratings Replace parts by part number and model NELSCS number Using an incorrect part could result in damage to the part number product fire injury or possibly death OVERLOAD PROTECTOR cross section Customer part number Lot code date code Physical termination part number 4 2 8 Note for using the PTC Starter Combo 1 Be careful not to allow over voltage and over current Fig 45 2 Do not drop or handle carelessly 3 Keep away from any liquid If liquid such as oil or water enters the PTC Combo PTC Combo materials may fail due to breakdown of their insulating capabilities 4 If the exterior of the PTC Combo is damaged the resistance value may be altered This can cause damage to the compressor and result in a no start or hard to start condition 5 Always use the PTC Combo 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 Usi
21. cover on the right side Cover is force fitted T cs Decorative Screw ole Fig 33 gt REATTACHING FREEZER DOOR Put freezer door down over the Hinge Pin on the Middle Hinge Pin Bracket Place Upper Hinge s Pin in the top of freezer door and line up the Upper Hinge with holes in top of refrigerator Use the 3 bolts to replace Hinge is Fig 35 Tighten bolts Force fit Top Hinge Cover over Top Hinge Fig 36 Replace cover from left side of refrigerator top onto the right of top to cover the holes Cover is also force fitted Cover on top of refrigerator After changing doors make sure that the corners of the Door Gaskets are not folded over To ensure a good seal apply a small amount of silicon grease on the corners of gaskets 5 i 0000000000000001 0000000000000001 L 10 3 7 LEVELING AND DOOR CLOSING 3 8 DOOR ALIGNMENT To avoid vibration the unit must be leveled If necessary If the space between your doors is uneven follow the adjust the Leveling Legs to compensate for unevenness v instructions below to align the doors of the floor The front should be slightly higher than the rear to aid in
22. d you should turn both Leveling Screws the same amount 5 Replace the base grill 2145 3 9 1 Remove the freezer shelf If your refrigerator has icemaker unplug and remove the icemaker first 2 Remove the screw of the cover grille fan 3 Remove the grille by pulling it out and by loosening a screw 4 Remove the Fan Motor assembly by loosening 4 screws and disassemble the shroud 5 Pull out the fan and separate the Fan Motor and Bracket FAN MOTOR SHROUD Fig 40 3 10 DEFROST CONTROL ASSEMBLY Defrost Control assembly consists of Defrost Sensor and FUSE M Defrost sensor functions to defrost automatically It is attached to metal side of the Evaporator and senses Temperature At the temperature of 162 F 72 C it stops the emission of heat from the Heater Fuse M is a safety device for preventing over heating of the Heater when defrosting 1 Pull out the grille assembly Figure 41 2 Separate the connector of the Defrost Control assembly and replace the Defrost Control assembly after cutting the Tie Wrap Figure 42 DEFROST CONTROL ASSEMBLY GRILLE ASSEMBLY 3 11 LAMP 3 11 1 Refrigerator Compartment Lamp 1 Unplug the power cord from the outlet 2 Remove refrigerator shelves 3 Release the hooks on both ends of the lamp shield and pull the shield downward to remove it
23. e 1 Observation value is 115V 60Hz 6 80 20 Normal operation of compressor is impossible or poor Replace PTC Starter The resistance value is 0 O short or open Shows continuity Separate OLP from compressor and check resistance value between two terminals of OLP whit a tester Check another electric component E Figure 2 17 6 3 OTHER ELECTRIC COMPONENTS Not cooling at all Cause Compressor Check for open short or E incorrect resistance readings in the following components doesn t run a Starting devices _ Short open or broken Poor contact gt or shorted b OLP c Compressor coil Coil open or shorted d Wiring harness Poor contact Replace or shorted indicated component Poor cooling performance Compressor runs poorly Check astaning I Low voltage l Raise voltage voltage Check voltage at starting devices Check current at Compressor Check rating of OLP I Lack of capacity Poor or broken or Replace open contact indicated component Shorted Fan motor doesn t run Wire is open or shorted Check wiring circuit Replace indicated component Coil is shorted or open Check Fan Motor
24. er Sensor e 000 Defrost Sensor Open or Short 3 RT Sensor e 00o Ambient Sensor Open or Short Check each sensor Defrost time last more Check FUSE M Defrosting than one hour and the DEF SENSOR 4 Problem 00000 defrost sensor never reach Drain Heater Drive 10 or 50 F Relay 5 F FAN LOCK ooo F FAN LOCKED Check if something is locking the F FAN 25 8 1 5 TEST MODE 1 Test mode allows checking the PCB and the function of the product as well as determining the Defective part in case of an error 2 The test button is on the main PCB of the refrigerator Test S W 3 While in the test mode the ADJUST button will not operate 4 After exiting the test mode be sure to reset by unplugging and plugging in the appliance 5 If an error such as a sensor failure is detected while in the test mode the test mode is cleared and the error code is displayed 6 While an error code is displayed the test mode will not be activated MODE Key Control Operation Remarks 1 Continuous operation of the Push the test COMP Freezer FAN button once and Cooling FAN The maximum TEST 1 2 DEFROSTING HEATER OFF time for TEST 1 3 ALL DISPLAY ON is 5 min 4 LAMP RELAY ON OFF OPERATED BY DOOR SWITCH 1 COMP OFF Ref Temp Display Push the test 2 Freezer FAN and Cooling button once while FAN OFF oeo eO in TEST MODE 1 3 Defrosting Heater ON TEST 4 1 3 5 LED ON Q ON 9 OFF
25. freezer sensors Door not sealing Check for proper door seal Evaporator frosted up Check defrost circuit components Sealed system related problem Not defrosting 1 Freezer has to much frost Open in defrost circuit Check defrost heater and circuit using Test Key Defrost sensor not operating correctly Check sensor Defrost drain clogged Check drain 19 6 5 REFRIGERATING CYCLE Troubleshooting Chart STATE OF STATE OF THE TEMPERATURE Eo THE UNIT EVAPORATOR SE THE COMPRESSOR PARTIAL Freezer Low flowing sound of A little higher Refrigerant level is low due LEAKAGE compartment and Refrigerant is heard and than ambient to a leak Refrigerator don t frost forms in inlet only temperature Normal cooling is possible by m cool normally restoring the normal amount of Refrigerant and repairing the leak E COMPLETE Freezer Flowing sound of refrigerant Equal to ambient No discharging of Refrigerant LEAKAGE compartment and is not heard and frost isn t temperature Normal cooling is possible by Refrigerator don t formed restoring the normal amount of cool normally refrigerant and repairing the leak amp PARTIAL Freezer Flowing sound of refrigerant A little higher Normal discharging of the RESTRICTION compartment and is heard and frost forms than ambient refrigerant 2 Refrigerator don t in inlet only temperature The capillary tube is fau
26. he position number EV REFRIGERATOR PARTS CAUTION Use the part number to order part not the position number 33 EV DOOR PARTS CAUTION Use the part number to order part not the position number 34 EV ICEMAKER PARTS CAUTION Use the part number to order part not the position number 35 LG Electronics Inc MFL62526015 December 2009 Rev 01
27. lty m cool normally c z WHOLE Freezer Flowing sound of refrigerant Equal to ambient e Normal discharging of the RESTRICTION compartment and is not heard and frost isn t temperature refrigerant E Refrigerator don t cool formed MOISTURE Cooling operation Flowing sound of refrigerant Lower than Cooling operation restarts RESTRICTION stops periodically is not heard and frost melts ambient when heating the inlet of the temperature capillary tube COMP Freezer and Low flowing sound of A little higher Low pressure at high side 2 J RESSION Refrigerator refrigerant is heard and ambient of compressor due to low T m don t cool frost forms in inlet only temperature refrigerant level Es O o NO COMP No compressing Flowing sound of refrigerant Equal to ambient No pressure in the high RESSION operation is not heard and there is temperature pressure part of the z no frost compressor Leakage Detection Check sealed system for leak Check if compressor runs If don t wait a while until it start to work YES Eva In Eva Out Check frost pattern on Evaporator No frost or frost forms in inlet only If frost is formed normally Only check that there is not any hole or bad welding in Eva in Eva out Normal Amount Faulty Compressor Check for oil leak on high side Machinery Room Voisture restriction
28. me is between 7 and 50 hours This time is determinate by how long the doors are opened For initial power on or for restoring power defrosting starts when the compressor running time reaches 4 hours Defrosting stops if the sensor temperature reaches 50 F 10 C or more If the sensor doesn t reach the 50 F 10 C in 1 hour the defrost mode is malfunctioning Refer to the defect diagnosis function Defrosting won t function if the sensor if defective wires are cut or short circuited 8 1 3 Electrical Parts Operation in Sequence Electrical parts such as COMP defrost heater freezer FAN etc Operate in the following order to prevent noise and parts damage Several parts are started at the same time at initial power on and are turned off together when TEST is completed OPERATING ORDER REMARKS Temperature of defrost sensor is 113 F 45 C or more Temperature of defrost sensor is lower than 113 F 45 C NO 83MOd TVILINI 24 8 1 4 Defect Diagnosis Function 1 If there is a problem an error code will appear 2 The buttons will not operate 3 When the problem is repaired the display will return to normal 4 The error code is displayed using the LEDs 1 WARMER TEMPERATURE ADJUST ERROR CODE on Refrigerator Temperature panel Q ON OFF NO Item Error Code Error Description R2 R3 R4 R5 Remarks 1 Ref Sensor e o e Ref Sensor Open or Short 2 Heat
29. ng an incorrect part could result in damage to the product fire injury or possibly death 4 3 OLP OVERLOAD PROTECTOR 4 3 1 Definition of OLP 1 OLP OVERLOAD PROTECTOR is attached to the compressor and protects the motor by opening the circuit to the motor if the temperature rises activating the bimetal spring in the OLP 2 When high current flows to the compressor motor the bimetal wors by heating the heater inside the OLP and the OLP protects the motor by cutting off the current flowing to the compressor motor 14 5 CIRCUIT DIAGRAM PWB PCB ASSEMBLY DISPLAY 2 1 3 4 5 6 RD BN PK YL BL PR CON101 RT SENSOR 8 RD BN PK YL BL PR WHWH GY GY 11213141516 111091817161 514131211 11213
30. omatically 28 2 Door Monitor Circuit LV Measurement between pins 4 and 3 Con 8 CONNECTOR 8 Door Close 0 volts 1 2 3 4 Door Open 5 volts RT SNR R DOOR S W 8 2 3 Temperature Sensor Circuit Refer to figure 2 Voltage supplied to each sensor wil range between 0 5 volts 22 F 30 C and 4 5 volts 122 F 50 C depending upon the temperature in the compartments A measurement of 0 volts indicates a short in the sensor circuit A measurement of 5 volts indicates an open in the sensor circuit PWB PCB ASSEMBLY DISPLAY 21113141516 RD BN PK YL BL PR CON101 RT SENSOR RD BN PK YL BL PR WH WH GY GY 11213141516 111019 181716151413 1211 1121314 CON5 CON6 CON8 1 CON4 CONT 1 C FAN SB 2 2 DEF SENSOR BN 3 3 BO X PR 4 4 Bo F FAN 5 PWB PCB ASSEMBLY MAIN 5 WH 6 6 WH T 7 R SENSOR 8 8 9 10 FIGURE 2 CONNECTOR 7 CONNECTOR 8 CONNECTOR 1 2 3 4 5 6 7 8 1 2 3 4 N C N C D SNR R SNR N C N C RT SNR R DOOR S W To measure the outputs of the sensors check the voltages between the pins as in the table And refer the values in the section RESIST
31. or is moving You can confirm Hall 1 detection of position 3 HALL IC ES TRAY Two seconds after detection of initial 4 SOLENOID VALVE 7 position you can confirm that valve is on You can check when the Hall IC is sensing a full HALL IC s 5 ice condition If there is a water fill error the LEVER fifth LED is not on 6 Reset Return to Status prior to Five seconds after fifth stage is completed TEST MODE the icemaker resets to initial status 7 3 DEFECT DIAGNOSIS FUNCTION 7 3 1 ERROR CODES shown on Ice Maker water supply control panel NO DIVISION INDICATOR PROBLEM REMARKS Note fill times Display switch 1 Normal see previous page None operates properly Icemaking Make sure that the wire 2 Sensor Open or shorted wire or sensor on each sensor is malfunction connected Ejector blades have not reached Check mafuncion HALLICIMOTOR mode HEATER RELAY 23 8 DESCRIPTION OF FUNCTION amp CIRCUIT OF MICOM 8 1 FUNCTION 8 1 1 Function 1 When the appliance is plugged in is set to 3 for the refrigerator You can adjust the Refrigerator control temperature by pressing the ADJUST button 2 When the power is initially applied or restored after a power failure it is automatically reset to 3 1 WARMER TEMPERATURE ADJUST 8 1 2 Defrost Cycle Defrosting starts each time the accumulated COMPRESSOR running ti
32. rinciple e rtr nre ERE E RR E E XC RC d e E E Ro 21 T2 eurem tat ees ee anand Eee 22 7 3 Defect diagnosis TUN 23 8 DESCRIPTION OF FUNCTION amp CIRCUIT OF 24 8 1 Function ete teg R E XR e CORR RE RR X E e ER LR Re E e d a a E a e 24 8 2 PCB Function i at n VUA e E e CR RD RR RNC E UR 27 8 3 Resistance Specification of sensor eessssssesesssssesessse esent nennen nnns 30 9 EXPLODED VIEW Mee 31 N SAFETY PRECAUTIONS Please read the following instructions before servicing your refrigerator 1 Check the refrigerator for current leakage 7 Before tilting the refrigerator remove all materials from 2 To preven telectric shock unplug before servicing On or in the refrigerator 3 Always check line voltage and amperage 8 When servicing the evaporator wear gloves to prevent Injuries from the sharp evaporator fins 9 Service on the refrigerator should be performed by a Qualified technician Sealed system repair must be Performed by a CFC certified technician 4 Use standard electrical components 5 Don t touch metal products in the freezer with wet Hands This may cause frost bite 6 Prevent water from spiling on to electric elements or the Machine parts 1 SPECIFICATIONS N par Q LTC22350SW 01 LTC22350ST 01 SPECIFICATIONS
33. se extreme caution when PK repairing it 4 1 3 Note for Usage x C 1 Be careful not to allow over current fs N BK 2 If compressor is dropped or handled carelessly poor R operation and noise may result g 3 Use proper electric components appropriate to the particular compressor in your product 4 Keep compressor dry If the compressor gets wet in the rain or a damp environment 9 6 and rust forms in the pin of the Hermetic Terminal poor n operation and contact may result If the hermetic connector BL rusts out or fails refrigerant and oil will be expelled into the 29 contact area probably resulting in smoke and fire T 5 When replacing the compressor be careful that dust PTC humidity and soldering flux don t contaminate the inside of the DIAGRAM compressor Contamination in the cylinder may cause noise improper operation or even cause it to lock up P T C OPTION 4 2 PTC STARTER COMBO LD LQ COMP EG COMP 4 2 1 Composition of PTC Starter GN tous YE _ GN 1 PTC Positive Temperature Coefficient is a no contact semiconductor starting device which uses ceramic material consisting of BaTiOs 2 The higher the temperature is the higher the resistance value These features are used as a starting device for the motor 4 2 2 Role of PTC Starter
34. ssor and terminal 5 or 6 of PTC Combo Rated voltage 10 YES No voltage YES OLP disconnected NO Applied voltage isn t in acceptable range 115V 10 Check resistance of motor compressor Advise customer that power supply needs to be checked by an electrician The resistance between pins should be between 1 and 50 ohms The resistance to ground should be infinite Replace OLP Check connection condition Reconnect Check the resistance between M C S C and M S in motor compressor Check each pin to ground Open or short gt or short to ground Replace compressor Check resistance of PTC Starter Check resistance of PTC Starter Combo Check resistance of two terminals in PTC Starter Combo Check OLP Check resistance of two terminals in OLP Refer to Page 17 Refer to Page 17 Check starting state Check the power supply under load Compressor attempting to re start after being off for 5 minutes YES YES Supply Did Compressor voltage rating por dE is OK with 10 Replace the compressor d NO 16 gt gt 6 2 PTC COMBO AND OLP Separate PTC Starter from Compressor and measure resistance between No 5 and 6 of PTC Starter with a Tester Figur
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