LG LSSE3026ST Service Manual Download

Page: 65 / 95

7-3

SVC TEST MODE

7-2 Basic Check Summary

Symptom : no heating(F9)

-. Check : All heater relays and DLB
relay are open

Symptom : Oven hot(F6)

-. Check: All heater relays are
open/shorted

Symptom : Oven lamp not
operating

-. Check the Lamp coil’s resistance

Symptom :
Door lock fail (F10)

-. Check : relative part

Symptom : Sensor error or
no heating(F1,F2)

-. Check : Sensor resistance

Summary of Contents for LSSE3026ST

Page 1: ... ELECTRIC RANGE SERVICE MANUAL MODEL LSSE3026ST LSSE3029BD CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL P NO MFL37118336 June 2015 Printed in Korea 삼 흥 정 판 Internal Use Only ...

Page 2: ...our dealer If the power cord is defective it must be replaced by a qualified service agent with a UL listed range cord Electrical leads and cables should not be allowed to touch the oven Rating plate is located on the left side of warming drawer The power supply of the appliance should be turned off when it is being repaired FORWARD LG Electronics assumes no responsibility for any repairs made on ...

Page 3: ...IING THE CONTROLLER 3 4 REMOVIING THE MAIIN PCB AND KEY PCB ASSEMBLY 3 5 REMOVIING KNOB AND IINFIINIITE SWIITCH 3 6 REMOVIING THE CERAMIIC GLASS COOKTOP THESURFACE ELEMENT AND THE HOT SURFACE LAMP 3 7 3 9 REMOVIING THE BROIIL ELEMENT 3 10 3 11 REMOVIING THE CONVECTIION ELEMENT FAN BLADE AND FAN MOTOR 3 12 REMOVIING THE OVEN LIIGHT SOCKET ASSEMBLY 3 13 REMOVIING THE LATCH DRIIVE ASSEMBLY 3 14 REMOV...

Page 4: ...top Element 5 4 RF Cook top Element 5 4 LF Cook top Element 5 5 Warm Proof Easy clean 5 5 Bake Speed roost 5 5 COMPOSITION OF CONTROL 6 1 6 5 Wiring Diagram 6 1 Main PCB 6 3 Relay PCB 6 4 SMPS PCB 6 4 Encoder PCB 6 5 Touch PCB 6 5 Buzzer PCB 6 5 SVC TEST MODE 7 1 7 3 TROUBLE SHOOTING 8 1 8 2 Check the Failure Code 8 1 Failure Code Summary 8 2 CHECKING FLOW CHART BY FAILURE 9 1 9 20 Power Failed De...

Page 5: ...es Failure to do so can result in severe personal injury death or electrical shock DO NOT touch heating elements or interior surfaces of oven Heating element may be hot even though they are dark in color Interior surfaces of an oven become hot enough to cause burns During and after use do not touch or let clothing or other flammable materials contact heating elements or interior surfaces of oven u...

Page 6: ...on WARNING DO NOT touch heating elements or interior surfaces of oven Heating element may be hot even though they are dark in color Interior surfaces of an oven become hot enough to cause burns During and after use do not touch or let clothing or other flammable materials contact heating elements or interior surfaces of oven until they have had sufficient time to cool Other surfaces of the applian...

Page 7: ... goes on or three long beeps sound oven is malfunctioning in the self clean mode Turn off or disconnect appliance from power supply and have serviced by a qualified technician VENTILATING HOODS Clean Ventilating Hoods Frequently Grease should not be allowed to accumulate on hood or filter When flaming foods under the hood turn the fan on OVEN Use Care When Opening Door Let hot air or steam escape ...

Page 8: ...Model Serial Number label and Tech Sheet locations are shown below Tech Sheet Location MODEL SERIAL NUMBER LABEL MODEL SERIAL NUMBER LABEL AND TECH SHEET LOCA AND TECH SHEET LOCATIONS TIONS Model Serial Number Location ...

Page 9: ...rming rack Oven Interior W x H x D Exterior Width Exterior Height Exterior Depth Net weight Lbs Kg Rating 29 Slide In STS Glass Touch Knob VFD Yes Yes Yes Setting 6 categories 1 Change hour mode on clock 2 Convection Auto Conversion On Off 3 Oven Temp Adjust 4 Preheat alarm light On Off 5 Beeper volume High Low Mute 6 Select Fahrenheit or Celsius temperature Ceramic glass 5 6 1 200 6 1 200 7 100W ...

Page 10: ...to cook foods which are normally broiled All foods should be turned at least once except fish which does not need to be turned Convection Bake Roast Mode Upper element lower element Rear element some model and fan operate during convection bake Convection bake should be used for cooking casseroles and roasting meats Oven should be preheated for best results when using convection bake Pans do not n...

Page 11: ...ent C LEFT REAR SINGEL CONTROL KNOB Use to control Left Rear Element D CENTER REAR WARM CONTROL KNOB Use to control Center Rear Element E RIGHT REAR SINGLE CONTROL KNOB Use to control Center Rear Element F RIGHT FRONT TRIPLE CONTRON KNOB Use to control Right Front Element G LOWER OVEN CONTROL KNOB Use to control lower oven H ELECTRIC OVEN CONTROL Use to control Electric Oven I HOT SURFACE INDICATO...

Page 12: ...ngle element 2 1 Turn the knob clockwise to use it as a Dual unit To turn on the Dual element There is one dual element located in the left front position Use the dual element as a dual or single element 1 Push in the appropriate knob 2 1 Turn the knob counterclockwise to use it as a Single element 2 1 Turn the knob clockwise to use it as a Dual unit To turn on a Triple element on some models Ther...

Page 13: ...ne illness 1 Turn the control knob to the On position NOTE For best results food on the warmer should be kept in its container or covered with a lid or aluminum foil to maintain food quality The warmer will not glow red like the other cooking elements The Warming Zone can be operated as a single element on some models CAUTION FOOD POISON HAZARD Bacteria may grow in food at temperatures below 140 F...

Page 14: ...arts at the set time Press and hold button for three seconds to select and adjust oven settings 5 Probe Lockout Press the button to select Probe function Press and hold button for three seconds to lock the door and control panel 6 Timer On Off Press the button to set or cancel timer on oven 7 Oven Light Press the button to turn oven light on or off 8 Warming Drawer Press the button to select the w...

Page 15: ...s plus or minus to set the desired hour mode on the clock 4 Press Start to accept the desired change 2 CONVECTION AUTO CONVERSION 1 Set the oven mode knob to the Off position 2 Press and hold Start Time for 3 seconds Then press Start Time twice Auto appears in the display 3 Press plus or minus to enable or disable the feature 4 Press Start to accept the change 3 THERMOSTAT ADJUSTMENT 1 Set the ove...

Page 16: ...Lockout feature press and hold Probe for three seconds The unlock melody sounds and the door and the controls unlock 7 SELF CLEAN 1 Remove all racks and accessories from the oven 2 Turn the oven mode knob to select Self Clean The oven defaults to the recommended four hour Self Clean for a moderately soiled oven Press plus or minus to select a Self Clean Time from 3 to 5 hours 3 Press Start Time 4 ...

Page 17: ...hould only be used to store cookware specifically supplied by LG with your range Do not put food or foil directly on the surface or base of the warming drawer This may result in damage to your drawer and may spoil your food Do not place plastic wrap in the warming drawer or use it to cover food being heated in the warming drawer Plastic may melt onto the drawer or surrounding areas and is very dif...

Page 18: ...shown below COMPONENT LOCA COMPONENT LOCATIONS TIONS Door Locking Motor Micro Switch Oven lamp Inner broil heater Encoder PCB Oven Sensor Outer broil heater Convection Heater Warm drawer heater Convection Motor Surface Elements Hinge Door Switch Infinite switch Door Latch Assembly Infinite switch 3 1 USING YOUR RANGE ...

Page 19: ...ING THE BACK COVER REMOVING THE BACK COVER WARNING DISCONNECT power supply cord from the outlet before servicing Replace all panels and parts before operating RECONNECT all grounding devices Failure to do so can result in severe personal injury death or electrical shock CAUTION Be careful when you work on the electric range handling the sheet metal part Sharp edge may be present and you can cut yo...

Page 20: ...ONNECT power supply cord from the outlet before servicing Replace all panels and parts before operating RECONNECT all grounding devices Failure to do so can result in severe personal injury death or electrical shock CAUTION Be careful when you work on the electric range handling the sheet metal part Sharp edge may be present and you can cut yourself REMOVING THE OVEN RELA REMOVING THE OVEN RELAY P...

Page 21: ...ontroller make sure that the cooktop gasket is fixed into the cooktop correctly Cooktop Gasket Cooktop Gasket Cooktop Gasket Cooktop Gasket Cooktop Gasket Cooktop Gasket Cooktop Gasket Cooktop Gasket Cooktop Gasket Cooktop Gasket Cooktop Gasket Cooktop Gasket Cooktop Gasket Cooktop Gasket WARNING DISCONNECT power supply cord from the outlet before servicing Replace all panels and parts before oper...

Page 22: ...ain PCB supporter REASSEMBLY NOTE When you reinstall the Key PCB Assembly make sure that the upper brackets of it are inserted into the correct guide then reinstall the lower bracket screw Buzzer PCB NFC PCB Encoder PCB Key PCB WARNING DISCONNECT power supply cord from the outlet before servicing Replace all panels and parts before operating RECONNECT all grounding devices Failure to do so can res...

Page 23: ...After replacing the infinite switch finally check the electric and wiring WARNING DISCONNECT power supply cord from the outlet before servicing Replace all panels and parts before operating RECONNECT all grounding devices Failure to do so can result in severe personal injury death or electrical shock CAUTION Be careful when you work on the electric range handling the sheet metal part Sharp edge ma...

Page 24: ... cover from the cooktop c Remove 2 connectors which connect controller harness with cooktop harness d Remove 4 screws on the bracket from the cooktop WARNING DISCONNECT power supply cord from the outlet before servicing Replace all panels and parts before operating RECONNECT all grounding devices Failure to do so can result in severe personal injury death or electrical shock CAUTION Be careful whe...

Page 25: ...ling motor e To remove the main duct remove the 7 screws on the main duct f To remove the main duct remove the 2 screws on the back panel REMOVING THE CERAMIC GLASS COOKT REMOVING THE CERAMIC GLASS COOKTOP OP THE THE SURF SURFACE ELEMENT AND THE HOT SURF ACE ELEMENT AND THE HOT SURFACE LAMP ACE LAMP WARNING DISCONNECT power supply cord from the outlet before servicing Replace all panels and parts ...

Page 26: ...The thermostat is located on the cavity cover It opens at 356 F 180 C and closes when the oven temperature cools below 14 F 10 C 8 To remove the door switch a Disconnect the wires from the terminal b Remove the door switch from the range To do this squeeze tabs and use a ratchet extension or a small socket and tap it out of the hole with a hammer Unhook Actuating Rod ...

Page 27: ...ts INNER BROIL ELEMENT CHARCOAL HEATER 1 Turn off the electrical supply going to the range 2 Remove the cooktop see page 3 4 for the procedure 3 Unplug 2 connectors at each point 4 Screws WARNING DISCONNECT power supply cord from the outlet before servicing Replace all panels and parts before operating RECONNECT all grounding devices Failure to do so can result in severe personal injury death or e...

Page 28: ...d remove 4 screws 5 Remove 2 screws and separate the broil assembly from the upper cavity 6 Remove 2 screws and heater cover mesh 7 Pull up the broil heater and remove from the Spring 4 Screws 2 Screws Heater cover Broil heater Spring 2 Screws ...

Page 29: ... 7 To remove Fan blade remove Nut by screwing clockwise Fan blade can be replaced from inside oven 8 To remove Fan motor assembly disconnect wire connection and remove the three bracket screws 9 Pull the fan motor assembly forward REMOVING THE CONVECTION ELEMENT REMOVING THE CONVECTION ELEMENT F FAN BLADE AND F AN BLADE AND FAN MOT AN MOTOR OR Nut Bushing Fan motor Fan cover screws 4ea Fan cover W...

Page 30: ...Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips Socket Clips CAUTION Be careful not to scra...

Page 31: ...ontrol board chip operates the motor 2 The cam moves the door hook connected to latch rod from unlocked position to locked position from locked Position to unlocked position 3 The cam activates the micro switch that causes the motor to stop 4 The locked status remains until the range temperature drops to approximately 500F after end of the self clean or lock out feature is reactivated The motor op...

Page 32: ...oven Sensor connector Main oven Sensor connector Main oven Sensor connector Main oven Sensor connector Main oven Sensor connector Main oven Sensor connector Main oven Sensor connector Main oven Sensor connector Main oven Sensor connector Main oven Sensor connector Main oven Sensor connector Main oven Sensor connector Main oven Sensor connector Main oven Sensor connector Main oven Sensor connector ...

Page 33: ...e locks rotating them back toward the slots in the oven frame until they lock Step 5 Close the oven door Removing the Door Step 1 Fully open the door Step 2 Unlock the hinge locks rotating them as far toward the open door frame as they will go Step 3 Firmly grasp both sides of the door at the top Step 4 Close the door to the removal position approximately five degrees which is halfway between the ...

Page 34: ...Pull the drawer open again to seat bearing glides into position Step 5 Replace the two screws Removing the Drawer Most cleaning can be done with the drawer in place however the drawer may be removed if further cleaning is needed Use warm water to thoroughly clean Step 1 Fully open the drawer Step 2 Remove the two screws Step 3 Locate the glide lever on each side of the drawer Push down on the left...

Page 35: ...age 3 7 7 Remove the screw from the left or right side panel 8 Pull the back of the side panel out from the range approximately 10 9 Push forward and remove the side panel WARNING DISCONNECT power supply cord from the outlet before servicing Replace all panels and parts before operating RECONNECT all grounding devices Failure to do so can result in severe personal injury death or electrical shock ...

Page 36: ...remove the door handle air guide a Remove 2 screws from air guide and then remove the air guide by lifting that b Remove 2 screws from handle and then remove the door bracket and door handle WARNING DISCONNECT power supply cord from the outlet before servicing Replace all panels and parts before operating RECONNECT all grounding devices Failure to do so can result in severe personal injury death o...

Page 37: ...ass Outer glass Outer glass Outer glass Outer glass Outer glass Outer glass Outer glass Outer glass Outer glass Outer glass lnner Oven Door Glass Bracket lnner Oven Door Glass Bracket lnner Oven Door Glass Bracket lnner Oven Door Glass Bracket lnner Oven Door Glass Bracket lnner Oven Door Glass Bracket lnner Oven Door Glass Bracket lnner Oven Door Glass Bracket lnner Oven Door Glass Bracket lnner ...

Page 38: ...e personal injury death or electrical shock CAUTION Be careful when you work on the electric range handling the sheet metal part Sharp edge may be present and you can cut yourself Gasket clip Gasket clip Gasket clip Gasket clip Gasket clip Gasket clip Gasket clip Gasket clip Gasket clip Gasket clip Gasket clip Gasket clip Gasket clip Gasket clip Gasket clip Gasket clip Gasket clip Gasket clip Gask...

Page 39: ... far enough 3 Resistance checks must be made with power cord unplugged from outlet and with wiring harness or connectors disconnected NOTE Below Ω value were tested at room temperature 77F 25 C Before testing any of components perform the following checks WARNING Disconnect power supply cord from the outlet before servicing Replace all panels and parts before operating Reconnect all grounding devi...

Page 40: ...ximately 2 6 kΩ 10 If not replace Abnormal Infinite open below 5Ω shorted Door latch open Door latch Locked Continuity Infinite NOTE After checking for the continuity of switch make sure that they are connected correctly 1 Refer to page 3 15 for the servicing procedure 2 Measure the resistance after cooling down Multiple meter scale R x 1000 Normal Approximately 1 09 kΩ 10 If not replace NOTE Oven...

Page 41: ...OTE Ω Value was tested at room temperature 77F 25 C Be careful the element is sensitive to temperature 1 Refer to page 3 11 for the servicing procedure 2 Measure the resistance after cooling down Multiple meter scale R x 1 Normal Approximately 49 Ω 10 If not replace NOTE Ω Value was tested at room temperature 77F 25 C Be careful the element is sensitive to temperature 1 Refer to page 3 12 for the ...

Page 42: ...4 4 Oven lamp Components Test procedures Results 1 Measure the resistance after cooling down Multiple meter scale R x1 Normal Below 5 Ω If not replace ...

Page 43: ...ob position measure the resistance between P2 to 4 and P2 to PILOT 5 When turn on turn off the knob position measure the resistance between P1 to 2 Components Test procedures Results 2 1 2 Infinite Switch LR CR RR Off On P2 4 P2 PILOT P1 2 P2 4 P2 PILOT P1 2 Infinite open circuit Infinite open circuit Infinite open circuit Continuity short circuit Continuity short circuit Continuity Short circuit ...

Page 44: ...re the resistance between P1 to 2 6 When turn on turn off the knob position measure the resistance between P2 to 4 and P2 to 4a Components Test procedures Results 4 P1 P1 4a 4a S1 S1 S2 S2 P2 P2 P1 4 4a S1 S2 P2 4 P1 4a S1 S2 P2 4 P1 4a S1 S2 P2 4 P1 4 P1 4a S1 S2 P2 4 P1 4a S1 S2 P2 4 P1 4a S1 S2 P2 2 2 1 A B 4 P1 4a S1 S2 P2 4 P1 P1 4a 4a S1 S1 S2 S2 P2 P2 P1 4 4a S1 S2 P2 4 P1 4a S1 S2 P2 4 P1 ...

Page 45: ...n P1 2 P2 4 P2 4a S1 S2 P1 2 P2 4 P2 4a S1 S2 Infinite open circuit Infinite open circuit Infinite open circuit Infinite open circuit Continuity short circuit Continuity short circuit Infinite open circuit Continuity short circuit Infinite open circuit Infinite open circuit Infinite open circuit Infinite open circuit Continuity short circuit Continuity short circuit Continuity short circuit Contin...

Page 46: ...e the resistance between P2 to 4 Components Test procedures Results P1 P1 S2 S2 2 P1 P2 P2 P2 S2 2 4 4a 4a S1 S1 4 4a 4b 4b 4b S1 P1 S2 2 P2 4 4a S1 4b P1 S2 2 P2 4 4a S1 4b P1 S2 2 P2 4 4a S1 4b P1 S2 2 P2 4 4a S1 4b P1 S2 2 P2 4 4a S1 4b P1 2 4 4a P1 S2 2 P2 4 4a S1 4b P1 S2 2 P2 4 4a S1 4b T r ip le Dual Single 2 2 1 A B P1 S2 2 P2 4 4a S1 4b P1 P1 S2 S2 2 P1 P2 P2 P2 S2 2 4 4a 4a S1 S1 4 4a 4b...

Page 47: ...ponents Test procedures Results Infinite Switch LF P2 4b P2 4b OFF ON Others are same as dual circuits Infinite open circuit Continuity short circuit Triple type Knob Position Results P1 S2 2 P2 4 4a S1 4b P1 P1 S2 S2 2 P1 P2 P2 P2 S2 2 4 4a 4a S1 S1 4 4a 4b 4b 4b S1 P1 S2 2 P2 4 4a S1 4b P1 S2 2 P2 4 4a S1 4b P1 S2 2 P2 4 4a S1 4b P1 S2 2 P2 4 4a S1 4b P1 S2 2 P2 4 4a S1 4b P1 S2 2 P2 4 4a S1 4b ...

Page 48: ...eck the single type check the dual type at the same procedure Components Test procedures Results 200 F Warm 450 F 400 F 350 F 300 F 250 F 2 2 1 A B L1 T2 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 H H H H H H H H H H H H H H H H H H L1 T2 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 T3 H H H H H H H H H H H H H H H H H H NOTE Ω Value was tested at room temperature 75F 24 C Part OF...

Page 49: ...erminal and 1A The meter should indicate 46 Ω 10 5 Touch the ohmmeter test leads to limiter terminals 1B and 2B With the temperature below 150 F the meter should indicate an open circuit infinite With the temperature above 150 F the meter should indicate continuity 0Ω Components Test procedures Results Normal Approximately 46 Ω If not replace Below 150 F open circuit infinite Above 150 F continuit...

Page 50: ... terminal E1 and E2 The meter should indicate 570Ω 10 5 Touch the ohmmeter test leads to limiter terminals 1A and 2A With the temperature below 150 F the meter should indicate an open circuit infinite With the temperature above 150 F the meter should indicate continuity 0Ω Components Test procedures Results Normal Approximately 570 Ω If not replace Below 150 F open circuit infinite Above 150 F con...

Page 51: ... Ω 10 E2 1A 35 Ω 10 5 Touch the ohmmeter test leads to limiter terminals 1B and 2B With the temperature below 150 F the meter should indicate an open circuit infinite With the temperature above 150 F the meter should indicate continuity 0 Ω Dual surface units Left Front LF Element Components Test procedures Results Normal Approximately 38 Ω Normal Approximately 30 Ω Below 150 F open circuit infini...

Page 52: ...e ohmmeter test leads to limiter terminals 1A and 2A The meter should indicate continuity 0Ω 6 Touch the ohmmeter test leads to limiter terminals 1B and 2B With the temperature below 150 F the meter should indicate an open circuit infinite With the temperature above 150 F the meter should indicate continuity 0Ω Components Test procedures Results Normal Approximately 67 Ω Normal Approximately 48 5 ...

Page 53: ...ER MUST BE DISCONNECTED BEFORE SERVICING THE APPLIANCE FAILURE TO DO SO CAN RESULT IN DEATH OR ELECTRICAL SHOCK NOTE Schematic diagram shows oven door opened and unlocked All elements are set to OFF SCHEMATIC DIAGRAM ...

Page 54: ...fore checking electric oven circuit 1 Check the line voltage household fuse or circuit breaker 2 Check for loose wiring or mis wiring within electric range NOTE The following individual circuits are for use in diagnosis and are shown in the ON position CONV BAKE CONV ROAST SELF CLEANING ...

Page 55: ...5 3 OVEN LIGHT Warming Drawer CR Cook top Element RR Cook top Element For Model LSE3092ST ...

Page 56: ...5 4 LR Cook top Element RF Cook top Element LF Cook top Element For Model LSE3092ST ...

Page 57: ...5 5 Broil Speed broil Boke Speed roost Warm Proof Easy clean ...

Page 58: ...6 1 COMPOSITION OF CONTROL 6 1 Wiring Diagram ...

Page 59: ...PCB P N EBR80595603 SMPS PCB P N EBR80595701 Touch PCB P N EBR79627801 Encoder PCB P N EBR80327001 NFC PCB P N EBR78789101 Buzzer PCB P N EBR76332902 Relay PCB P N EBR80595405 Front Back Controller assembly 6 2 Composition of control ...

Page 60: ...6 3 COMPOSITION OF CONTROL Main PCB Main PCB P N EBR80595603 P N EBR80595405 Relay PCB Relay PCB CN52 CN40 CN03 CN22 CN50 CN51 CN01 CN20 CN53 CN31 CN52 CN51 CN53 ...

Page 61: ...6 4 COMPOSITION OF CONTROL SMPS PCB SMPS PCB Encoder PCB Encoder PCB CN02 CN01 CN41 P N EBR80595701 P N EBR80327001 ...

Page 62: ...6 5 COMPOSITION OF CONTROL T Touch PCB ouch PCB NFC and Buzzer PCB NFC and Buzzer PCB P N EBR79627801 P N EBR78789101 P N EBR76332902 ...

Page 63: ...e Off 2 Press the button in the following order _ _ Oven light Oven Light hold for 3 seconds 3 Press the OVEN LIGHT button again hold for 3seconds 4 Select the t0 by press the button 5 Press the START button 6 Start the test by press the START button again Model Option Software version Only software version is displayed at the right digits ...

Page 64: ...layed 7 Whenever you input the START button the relay operation sequence should be as seen below Relay Operation Sequence Conv Heater Broil Inne Broil Outer DLB C Fan High C Fan Low B Fan High B Fan Low RY11 RY12 RY5 RY13 RY8 RY9 RY1 RY2 Active Load Icon SW Version ...

Page 65: ... heater relays and DLB relay are open Symptom Oven hot F6 Check All heater relays are open shorted Symptom Oven lamp not operating Check the Lamp coil s resistance Symptom Door lock fail F10 Check relative part Symptom Sensor error or no heating F1 F2 Check Sensor resistance ...

Page 66: ...utton and encoder is placed in the Off 2 Press the button in the following order _ Oven light Oven Light hold for 3 seconds If the oven has a malfunction the Oven will show the failure Code like FIG 1 If the oven do not has any failure the Oven will show it like FIG 2 NOTE After checking the F Code move the Encoder to remove all codes 8 1 TROUBLESHOOTING FIG 1 FIG 2 Type of F Code Type of F Code T...

Page 67: ...is over 650 F continuously during 2 minutes on cooking except self cleaning EXCEPT PROOF and WARM Starting temperature of 130 For less and the oven door is closed the oven inside temperature does not go up more than 10 F compared with the starting temperature for 5minutes after the start of cooking In case of Door Lock Failure during operating Lock motor 1 Wiring 2 Oven Sensor 1 Wiring 2 Oven Sens...

Page 68: ...E Symptom Check Point 1 Power Failure Dead 2 No Display 1 Check Electrical Wiring 2 Check the SMPS PCB Input Voltage with CN01 Main PCB CN03 CN02 SMPS PCB CN01 Thermostat WH RD Pin No 1 3 4 7 6 7 Vf 4 3V 33V 12V Voltage CN01 CN02 CN03 ...

Page 69: ...econnect If defective harness replace or fix 1 No Yes Check the connection of Power Cord Normal Reconnect If defective harness replace or fix 2 3 Check the AC input of SMPS PCB SMPS PCB CN01 Pin 1 and 3 120V AC No Yes Go to 7 On the next Page 4 No Yes Check the connection of L1 and N at Terminal block Normal Reconnect 5 No Yes Check the Thermostat Normal Short Abnormal Open Normal Replace the Ther...

Page 70: ... connecting states between CN02 of SMPS PCB and CN03 of Main PCB Is it OK No Yes Replace the Main PCB 7 Reconnect If defective harness replace or fix If the same phenomenon occurs even though after fixed connection you should replace the Main PCB ...

Page 71: ... 1st pin of CN53 E G H D F L1 L2 RY5 RY12 RY11 RY10 Broil Outer Broil Inner Conv Heater Warm Drawer RY13 C B A Symptom Check Point 1 No heating 2 F9 1 Check Electric Wiring 2 Check Heater s Resistance 3 Check the Sensor A B C D E F G H ...

Page 72: ...9 5 CHECKING FLOW CHART BY FAILURE Symptom Check Point 1 No heating 2 F9 1 Check Electrical Wiring 2 Check Heater s Resistance 3 Check the Sensor CN31 ...

Page 73: ...aps 2 Electric wiring of electric element Yes Reconnect If defective harness Replace or fix 1 Outer Broil Conv Heater Inner Broil Unplug the unit Check the resistance of each heater Normal Measure the resistance after cooling down The resistance is shown below No Replace the failed heater 2 Inner Broil yes No Outer Broil Conv Heater ...

Page 74: ...lace Relay PCB you should replace the Main PCB Heater Resistance Ω Approximately Inner Broil 50 Outer Broil 23 Conv Heater 23 Is the value of thermistor normal Refer below Check with the test mode To enter the test mode follow these steps 1 Press the any button and encoder is placed in the Off 2 Press the button in the following order _ Oven light Oven Light hold for 3 seconds 3 Press the OVEN LIG...

Page 75: ...9 8 CHECKING FLOW CHART BY FAILURE Symptom Check Point 1 Door Lock System Failure 2 F10 1 Check the Electrical wiring 2 Check the Motor s Resistance 3 Check the Relay PCB Door Lock Relay CN31 ...

Page 76: ...9 9 CHECKING FLOW CHART BY FAILURE Symptom Check Point 1 Door Lock System Failure 2 F10 1 Check the Electrical wiring 2 Check the Motor s Resistance 3 Check the Relay PCB Door Lock Relay ...

Page 77: ...he following 1 Electric wiring of relay in Relay PCB 2 Electric wiring of Locking Motor and Micro Switch 3 Electric wiring of CN31 of Main PCB Yes Reconnect If defective harness replace or fix 2 Unplug the unit No No Note Just after self clean start the door lock motor starts to rotate During this time if the door lock switch does NOT operate properly after rotating twice then supervising circuit ...

Page 78: ...ce the Main PCB Is the door lock switch micro switch normal measure the resistance of door lock switch normally open type No Replace the micro switch 3 Yes Abnormal Normal Is the resistance of the lock motor normal measure the resistance of lock motor Normal approximately 2 6kΩ Abnormal infinite or below 5 Ω No Replace the lock motor 4 Yes ...

Page 79: ...9 12 CHECKING FLOW CHART BY FAILURE Symptom Check Point 1 Sensing Fail 2 F1 3 F2 1 Check the Electrical Wiring 2 Check the Test Mode 3 Check the Sensor s Resistance CN31 ...

Page 80: ...n 2 CN31 of Main PCB No Yes Yes Unplug the unit Sensing Fail F1 F2 Yes Reconnect or adjust the connection 1 Sensor connection CN31 Is the resistance of thermistor normal Check Pins 4 and 5 of CN31 wiring in main PCB Normal approximately 1 09kΩ at 25 C No Replace the defective Thermistor 2 CN13 ...

Page 81: ...e test mode To enter the test mode follow these steps 1 Press the any button and encoder is placed in the Off 2 Press the button in the following order _ Oven light Oven Light hold for 3 seconds 3 Press the OVEN LIGHT button again hold for 3seconds 4 Select the t3 by press the button 5 Press the START button Normal Thermistor value at room temp is from 70 F to 90 F ...

Page 82: ...URE 1st pin of CN53 E G H D F L1 L2 RY5 RY12 RY11 RY10 Broil Outer Broil Inner Conv Heater Warm Drawer RY13 C B A Symptom Check Point 1 Oven hot 2 F6 1 Check the Resistance of the Relay 2 Check the Sensor s Resistance A B C D E F G H ...

Page 83: ...9 16 CHECKING FLOW CHART BY FAILURE Symptom Check Point 1 Oven hot 2 F6 1 Check the Resistance of the Relay 2 Check the Sensor s Resistance CN31 ...

Page 84: ... 1 09kΩ at 25 C No Replace the defective Thermistor 1 CN31 Unplug the unit Yes Yes Yes Yes Is the heater relay normal Measure the resistance of Heater relay and Live Normal infinite Abnormal shorted No Replace the Relay PCB 2 Inner Broil Relay Outer Broil Relay Conv Heater Relay Tab 02 and Tab 22 RY12 Tab 01 and Tab 11 RY5 Tab 02 and Tab 21 RY11 ...

Page 85: ...it No Is the value of thermistor normal Refer below Check with the test mode To enter the test mode follow these steps 1 Press the any button and encoder is placed in the Off 2 Press the button in the following order _ Oven light Oven Light hold for 3 seconds 3 Press the OVEN LIGHT button again hold for 3seconds 4 Select the t3 by press the button 5 Press the START button Normal Thermistor value a...

Page 86: ...9 19 CHECKING FLOW CHART BY FAILURE Symptom Check Point 1 Key not working 2 F3 Error 1 Check the Door Locking System 2 Check the Electrical Wiring CN53 ...

Page 87: ...And then check button operation using key test mode o enter the test mode follow these steps 1 Press the any button and encoder is placed in the Off 2 Press the button in the following order _ Oven light Oven Light hold for 3 seconds 3 Press the OVEN LIGHT button again hold for 3seconds 4 Select the t7 by press the button 5 Press the START and Check the button Refer to the next page appendix 2 3 P...

Page 88: ... the normal operation will be the number that corresponds to the Key displayed on the VFD 2 If the key access order was changed the buzzer make double beep sound 3 The buzzer does NOT beep when a key was accessed it would be defected How to stop Key Test mode Press 1st Cook time 2nd 8th START Key operation T Key operation Test sequence est sequence 1st 8th ...

Page 89: ...EXPLODED VIEW EV INTRODUCTION COOKTOP PARTS DOOR PARTS DRAWER PARTS CAVITY PARTS CONTROLLER PARTS 8511 9504 9506 9501 W229 Customer Model Product Code SVC Model MODEL ...

Page 90: ... EV DOOR PARTS 1704 1382 1035 1015 W230 1703 1020 1008 102U W243 W222 W222 1000 102S 102L 173U W101 W101 1018 1009 1735 W230 ...

Page 91: ... EV CONTROLLER PARTS 2042 2043 2044 2046 2041 2083 2085 2050 2090 2037 2085 2085 2053 5206 2082 2084 2026 244S 244D 244D W280 244A 244D 244T 2002 2006 2001 260E 260B 260M 260B 260K 2015 2385 ...

Page 92: ... EV COOKTOP PARTS 3056 3215 3079 3006 3016 330M 330H 3205 3022 3204 330S 330S 3014 ...

Page 93: ...DRAWER PARTS 8523 8507 8501 8514 8517 8021 8505 8524 8602 8520 8512 5505 5505 8504 6008 8508 8513 1009 8519 8708 8708 W228 EV ...

Page 94: ...002 5535 5407 5406 5512 3122 5513 5510 3057 5132 5506 2045 5014 5509 5039 5611 507R 5611 507S 5508 3013 3093 3024 5502 5504 5507 5063 5501 5124 5405 5408 5016 5518 W232 5533 W124 W233 5521 3222 5556 5006 5019 3208 5535 W129 5021 5532 5516 5511 5032 3501 3511 EV ...

Page 95: ......

Search results

Summary of Contents for LSSE3026ST

Reviews:

Related manuals for LSSE3026ST

Brands by name

Popular brands

LG LSSE3026ST, Service Manual

Search results

Summary of Contents for LSSE3026ST

Reviews:

Related manuals for LSSE3026ST

Brands by name

Popular brands