LG LDE4415BD Service Manual Download

Page: 85 / 101

7-22

TROUBLESHOOTING

■

How to check button operation

1. Keys should be accessed according to the above sequence and check the beep

sound when key is accessed.

If Key is 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

2nd

…

35th (Lower CLEAR/OFF)

KEY OPERATION TEST SEQUENCE

Summary of Contents for LDE4415BD

Page 1: ...this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual The material covered by this prohibition includes without limitation any text graphics or logos in this Service Manual Copyright 2015 2017 LG Electronics Inc All rights reserved Only training and service purposes P NO MFL37118332 May...

Page 2: ...ur 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 o...

Page 3: ... COMPONENT ACCESS 3 1 3 24 Component Locations 3 1 Removing Control cover and Touch Glass Assembly 3 2 Removing the Power Control Board PCB 3 3 Component Locations 3 4 Removing Control cover and Touch Glass Assembly 3 5 Removing the Power Control Board PCB 3 6 Removing the Surface Element and the Ceramic Glass Cooktop 3 7 Removing the Door Lath and Upper Door Switch 3 8 Removing the Door Lath and ...

Page 4: ...ar CR Element 4 8 Composition of control 5 1 5 6 Composition of Control 5 1 Main PCB 5 2 Oven relay PCB 5 2 Touch PCB 5 3 NFC and Buzzer PCB 5 3 Composition of Control 5 4 Main PCB 5 5 Oven relay PCB 5 5 Touch PCB 5 6 Wi Fi and Buzzer PCB 5 6 SERVICE TEST MODE 6 1 6 3 Sequence SVC test mode 6 1 6 2 Basic check summary 6 3 TROUBLESHOOTING 7 1 7 21 Check the Failure code 7 1 Failure code summary 7 2...

Page 5: ...eating 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 appliance may become hot enough ...

Page 6: ...ior 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 appliance may become hot enough to cause burns among the...

Page 7: ...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 before you remove or replace food in the oven Do Not Heat Unopened Food Containers Bui...

Page 8: ...1 4 GENERAL The Model Serial Number label and Tech Sheet locations are shown below Model Serial Number Location MODEL SERIAL NUMBER LABEL AND TECH SHEET LOCATIONS Tech Sheet Location On Lower Rear Cover ...

Page 9: ...amic glass of element 5 Power LR 6 1200W RR 6 1200W CR 7 100W LF 9 6 3200W 1400W RF 12 9 6 3000W 2200W 1100W Oven Capacity cu ft 3 0 Upper 4 3 Lower Broil element 3000W Upper 3800W Lower Bake element 2100W Upper Convection system No Upper Yes Lower Convection element 2500 Lower of Rack Positions 2 Upper 4 Lower Interior oven light 1 Upper 1 Lower Proof Yes Lower Warm Yes Upper Yes Lower Broiler pa...

Page 10: ...s not need to be turned USING YOUR RANGE GENERAL INFORMATION Convection Bake Roast Mode For the Lower oven only Upper element rear element 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 need to be staggered Cooks approximately 25 quicker than bake Cookin...

Page 11: ... Use to select the Conv Bake function of the lower oven CONV ROAST Use to select the Conv Roast function of the lower oven WARM PROOF Use to select the Warm Proof function of the lower oven PIZZA Use to select the Pizza function of the lower oven LOWER SELF CLEAN Use to select the Self Clean of the lower oven LOWER EASY CLEAN Use to select the Easy Clean of the lower oven BAKE Use to select the Ba...

Page 12: ...e time of day SETTINGS Use to set the time of day COOK TIME Use to set the length of the cook time Bake Conv Conv Roast only NUMER PADS Use to enter a temperature and all times START TIME Use to set delay time Bake Conv Conv Roast Self clean only START Use to START all functions in the oven CONTROL PANEL FEATURES ...

Page 13: ... Use to select the Conv Bake function of the lower oven CONV ROAST Use to select the Conv Roast function of the lower oven WARM PROOF Use to select the Warm Proof function of the lower oven PIZZA Use to select the Pizza function of the lower oven LOWER SELF CLEAN Use to select the Self Clean of the lower oven LOWER EASY CLEAN Use to select the Easy Clean of the lower oven BAKE Use to select the Ba...

Page 14: ...ngs REMOTE START Wi Fi ress Remote start button to use the function Press and hold button for three seconds to connect the appliance to a home Wi Fi network COOK TIME Use to set the length of the cook time Bake Conv Conv Roast only NUMER PADS Use to enter a temperature and all times START TIME Use to set delay time Bake Conv Conv Roast Self clean only START Use to START all functions in the oven C...

Page 15: ...OCK 2 START CLEAR OFF and ON OFF pad For both the Upper Lower oven 1 Touch START pad to start oven 2 Touch UPPER or LOWER CLEAR OFF pad to cancel a program during cooking or Erase during programming 3 Touch ON OFF pad to start or cancel the surface unit 3 TO TURN ON OFF THE OVEN LIGHT For both the Upper Lower oven The oven light automatically turns ON when the door is opened The oven light may als...

Page 16: ...1 pad for HI LO OFF 6 ADJUST COOKTOP ON ALERT VOLUME 1 Touch SETTING repeatedly until CtOP appears in the display 2 Touch 1 to select Hi Lo Off 3 Touch START to accept the change 7 TEMPERATURE UNIT F or C 1 Press SETTING pad 7 times 2 Press 1 pad for F C 3 Press START pad 6 TIMED COOK DELAYED TIMED COOK For the Upper Lower Bake Lower CONV Bake Roast 7 BROIL For both the Upper Lower oven 8 CONVECTI...

Page 17: ... SEt appears in the display and the Wi Fi icon blinks 3 Register the appliance on the Wi Fi network using the smart phone app 4 To disconnect the appliance from the network delete it from the registered appliances in the app Press and hold the Lower CLEAR OFF pad 3 seconds In order to activate or deactivate LOCKOUT START WARM Upper oven WARM PROOF Once WARM Lower oven START WARM PROOF TWICE PROOF ...

Page 18: ...hen it is positioned at both Off and Hi Single Off On Note Hi is the highest temperature available Lo is the lowest temperature available 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 A Turn the knob counterclockwise to use it as a Single element 2 B Turn the knob clockwise ...

Page 19: ...Always start with hot food Do not use the warm setting to heat cold food Do not use the warm setting for more than 2 hours The Warming Zone located in the back center of the glass surface will keep hot cooked food at serving temperature Use the Warming Zone to keep food warm after it has already been cooked Attempting to cook uncooked or cold food on the Warming Zone could result in a food borne i...

Page 20: ... Elements Cooktop PCB Upper Broil Heater Lower Door Latch Assembly Convection Heater Hinge Hanger Hinge Hanger Oven Sensor Buzzer PCB Main PCB Relay PCB Oven Sensor Oven Light Neon Lamp Oven Light Door Locking Motor Micro Switch Door Locking Motor Micro Switch Convection Motor Lower Broil Heater Lower Bake Heater Upper Door Switch Regulator Lower Door Switch NFC PCB For model LDE4415ST 00 LDE4415B...

Page 21: ...ol Cover Label Bracket Back Cover CAUTION Use caution when handling sheet metal parts while servicing the range Some parts may have sharp edges which could result in injury 4 Remove Main PCB Relay PCB Buzzer PCB and NFC PCB from PCB Supporter after removing 2 screws and unlocking 9 hooks Screw Hook 5 Unplug 1 connector from Touch PCB 6 Remove 3 screws from front control panel with small size drive...

Page 22: ...ay from the wall so that you can access the rear panel 3 Remove control cover See step 3 on page 3 2 NFC PCB Buzzer PCB Main PCB Relay 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 result in severe personal injury death or electric shock CAUTION Use caution when handling s...

Page 23: ...Elements Cooktop PCB Upper Broil Heater Lower Door Latch Assembly Convection Heater Hinge Hanger Hinge Hanger Oven Sensor Buzzer PCB Main PCB Relay PCB Oven Sensor Oven Light Neon Lamp Oven Light Door Locking Motor Micro Switch Door Locking Motor Micro Switch Convection Motor Lower Broil Heater Lower Bake Heater Upper Door Switch Regulator Lower Door Switch Wi Fi PCB For model LDE4415ST 01 LDE4415...

Page 24: ...l Cover Label Bracket Back Cover CAUTION Use caution when handling sheet metal parts while servicing the range Some parts may have sharp edges which could result in injury 4 Remove Main PCB Relay PCB Buzzer PCB and Wi Fi PCB from PCB Supporter after removing 2 screws and unlocking 9 hooks Screw Hook 5 Unplug 1 connector from Touch PCB 6 Remove 3 screws from front control panel with small size driv...

Page 25: ...y from the wall so that you can access the rear panel 3 Remove control cover See step 3 on page 3 2 Wi Fi PCB Buzzer PCB Main PCB Relay 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 result in severe personal injury death or electric shock CAUTION Use caution when handling ...

Page 26: ...om cooktop bracket REMOVING THE SURFACE ELEMENTS AND THE CERAMIC GLASS 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 electric shock 4 Screws Cooktop Controller Screw Screw Connector Step 6 Protect the cooktop surface and turn t...

Page 27: ...dy done raise the cooktop see page 3 4 for the procedure b Remove the upper case c Remove the upper 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 Door Switch d Disconnect the wires from the terminals Wires 2 Screws 2 Screws 2 Screws Case upper WARNING DISCONNECT power supply cord from the outlet before serv...

Page 28: ...per Lower cavities 2 screws c Remove 4 screws from upper and lower wool cover back 4 Screws d Tilt Upper cavity cautiously make sure that the controller does not fall down to the floor e Remove 2 screws to replace the lower latch 2 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...

Page 29: ...ady done raise the cooktop see page 3 4 for the procedure b Remove the Side panels see page 3 24 for the procedure c Remove the lower 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 Door Switch d Disconnect the wires from the terminals Wires ...

Page 30: ... 2 Connectors 6 Release 2 hooks and remove 4 screws 4 Screws 2 Hooks 7 Remove 2 screws and separate the broil assembly from the upper cavity 2 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 electric shock CAUTION Use caution when...

Page 31: ...3 12 COMPONENT ACCESS 8 Remove 2 screws and heater cover mesh 9 Pull up the broil heater and remove from the Spring Broil heater Spring 2 Screws Heater cover ...

Page 32: ...ont and rear brackets 2 Front bracket screws 2 Rear bracket screws b Pull the element forward REMOVING THE BROIL ELEMENT For the Lower oven 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 electric shock CAUTION Use caution when handling ...

Page 33: ... or electric shock CAUTION Use caution when handling sheet metal parts while servicing the range Some parts may have sharp edges which could result in injury 1 Turn off the electrical supply going to the range 2 Open the oven door and remove the racks from inside the oven 3 Remove the back cover see page 3 8 for the procedure 4 Unplug 2 terminals at each point 2 Terminals 3 To remove the upper bak...

Page 34: ...ews and pull the element forward 8 To remove Fan blade remove nut by screwing clockwise fan blade can be replaced from inside oven CAUTION Be careful not to bend the fan blade Doing so can result in vibration noise and poor performance of convection when operating 9 To remove fan motor assembly disconnect wire connection and remove the three bracket screws 10 Pull the fan motor assembly forward Sc...

Page 35: ...onnect power 2 Turn the glass bulb cover in the back of the oven counterclockwise to remove 3 Turn bulb counterclockwise to remove from socket 4 Replace bulb and bulb cover by turning clockwise Glass cover Bulb 5 Use a screwdriver and bend the clips on the oven light socket away from the edges of the liner hole and pull the socket out of the liner NOTE If it is too difficult to remove the socket f...

Page 36: ...he 1 mounting screw from the latch drive 1 Screw 6 Unhook the Latch rod from the cam REMOVING THE LATCH DRIVE ASSEMBLY For both the Upper Lower oven DOOR LOCKING MECHANISM The door lock assembly is located at the back side of range The structural elements are as below 1 When the oven control is programmed and started for the Self clean and Lock out mode PCB Power control board chip operates the mo...

Page 37: ...ution when handling sheet metal parts while servicing the range Some parts may have sharp edges which could result in injury 1 Turn off the electrical supply going to the range 2 Open the oven door and remove the racks from the oven 3 Pull the range away from the wall so that you can access the rear panel 4 Remove the back cover see page 3 8 for the procedure Upper Lower oven sensor connector 5 To...

Page 38: ...ons on each hinge Push 5 Lift the door up until it is clear of the hinges about 30 To replace the door 1 Be sure both hinges are in a 30 degree position 2 Slide the door back onto the hinges until you hear a solid click and the release buttons have engaged 3 Fully open the door 4 Push the hinge locks down onto the door frame 5 Close the oven door REMOVING REPLACING THE LIFT OFF OVEN DOOR For the U...

Page 39: ... stop position and fully closed If the position is correct the hinge arms will move freely about 5 5 Lift door up and out until the hinge arms are clear of the slots To replace the door 1 Firmly grasp both sides of the door at the top 2 With the door at the same angle as the removal position seat the indentation of the hinge arms into the bottom edge of the hinge slots The notch in the hinge arms ...

Page 40: ...y have sharp edges which could result in injury REMOVING THE UPPER OVEN DOOR HANDLE GLASS For the Upper door 1 Remove the oven door from the range see page 3 16 for the procedure 2 Place the upper oven door on a padded work surface with the front glass facing down 3 Remove the 2 top door screws 4 Remove the three bottom screws from the door liner 5 Lift the liner assembly off the front glass and s...

Page 41: ... 4 top liner screws See step 3 on page 3 18 b Place the door liner assembly on a padded work surface with the hinge receptacles over the edge c Lift the hinge receptacle out of the door liner slot Hinges on both side d Lift the inner glass and bracket out of the inner cover Inner cover ...

Page 42: ...stall the Insulation around the oven door glass make sure that the insulation is not visible in the glass after the door is reassembled RESSEMBLY METHOD OF HINGE RECEPTACLE 1 Cover the inner cover with the door frame 2 Pull up the bottom of the hinge receptacle to align the hole with the hole in the frame then insert and tighten the bottom screw 3 Move the inner cover and pull the top of the hinge...

Page 43: ...top door screws 4 top liner screws 4 Remove the 5 bottom screws from the door liner 5 bottom liner screws 5 Lift the liner assembly off the front glass and set it aside 6 To remove the door handle door decor a Remove the 2 door handle screws and lift the door handle off door decor and slide up the door decor Door decor Handle Screws 7 To remove the hinge hanger assembly and glass a Place the door ...

Page 44: ...l the Insulation around the oven door glass make sure that the insulation is not visible in the glass after the door is reassembled RESSEMBLY METHOD OF HINGE HANGER 1 Cover the inner cover with door frame 2 Screw in the 2 top liner screws 2 top liner screws 3 Place the door liner assembly on a padded work surface with the hinge hangers over the edge 4 Screw in the 2 bottom liner screws ...

Page 45: ...cing the range Some parts may have sharp edges which could result in injury 1 Open the oven door to its fully down position 2 Pull the oven door gasket clips out of the liner holes until all of the clips are removed Upper door gasket Lower door gasket Gasket clip 3 Pull the ends of the gasket out of the liner holes Liner Hole REASSEMBLY NOTE When you install the new gasket make sure that all of th...

Page 46: ...ff the electrical supply going to the range 2 Remove the oven door from the range see page 3 17 for the procedure 3 Pull the range away from the wall so you can access the back of the unit 4 Remove the control cover and back cover see step 3 on page 3 2 page 3 8 for the procedure 5 Raise the cooktop see page 3 4 for the procedure NOTE Position the side of the cooktop so that it does not rest on th...

Page 47: ...res failed terminals or wires not pressed into connectors far enough 3 Resistance checks must be made with the power cord unplugged from the outlet and with the wiring harness or connectors disconnected WARNING Disconnect power supply cord from the outlet before servicing Replace all panels and parts before operating Reconnect all grounding devices after servicing Failure to do so can result in de...

Page 48: ...pen below 5Ω shorted Micro Switch Normal below 2Ω Normal Infinite ON position Unlock position OFF position Lock position NOTE The Micro switch will be held for 13 seconds during lock or unlock Oven Sensor 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 Ω Value was tested a...

Page 49: ...Door closed Continuity Infinite Oven lamp 1 Measure the resistance after cooling down Multiple meter scale R x1 Normal Below 5 Ω If not replace Upper oven Broil heater 1 Remove wire leads 2 Measure resistance after cooling down Normal Approximately 28 Ω Abnomal Infinite opened NOTE Ω Value was tested at room temperature 77 F 25 C Be careful The element is sensitive to temperature ...

Page 50: ...Lower oven Broil heater 1 Remove wire leads 2 Measure resistance after cooling down Normal Approximately 14 7 Ω Abnomal Infinite opened NOTE Ω Value was tested at room temperature 77 F 25 C Be careful the element is sensitive to temperature Lower oven Conv heater 1 Remove wire leads 2 Measure resistance after cooling down Normal Approximately 24 Ω Abnomal Infinite opened NOTE Ω Value was tested at...

Page 51: ...4 Touch the ohmmeter test leads to the element terminal and 1A The meter should indicate 47 Ω 10 Normal Approximately 47 Ω If not replace 1A 2A 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 Below 150 F open circuit infinite Ab...

Page 52: ...r test leads to the 4 2A and 3 2A the meter should indicate 4 2A 38 Ω 10 3 2A 30 Ω 10 Normal Approximately 38 Ω Normal Approximately 30 Ω 3 4 2A 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 Below 150 F open circuit infinite ...

Page 53: ...1 2A and 4 2A and 3 2A the meter should indicate 1 2A 52 Ω 10 4 2A 49 Ω 10 3 2A 68 Ω 10 Normal Approximately 52 Ω Normal Approximately 49 Ω Normal Approximately 68 Ω 1 4 2A 3 5 Touch the ohmmeter test leads to limiter terminal 1B and 2B With the temperature below 150 the meter should indicate an open circuit infinite With the temperature above 150 the meter should indicate continuity 0 Ω Below 150...

Page 54: ...ohmmeter test leads to the between element terminal The meter should indicate 570 Ω 10 Normal Approximately 570 Ω If not replace Element terminal 5 Touch the ohmmeter test leads to limiter terminal With the temperature below 150 the meter should indicate an open circuit infinite With the temperature above 150 the meter should indicate continuity 0 Ω Below 150 F open circuit infinite Above 150 F co...

Page 55: ...5 1 COMPOSITION OF CONTROL Main PCB P N EBR80595301 Oven Relay PCB P N EBR80595401 Touch PCB P N EBR79627601 NFC PCB P N EBR78789101 Buzzer PCB P N EBR76332902 For model LDE4415ST 00 LDE4415BD 00 ...

Page 56: ...5 2 COMPOSITION OF CONTROL Main PCB P N EBR80595301 P N EBR80595401 Oven Relay PCB CN40 CN20 CN61 CN60 CN01 CN51 CN53 CN50 CN22 CN53 CN52 CN51 ...

Page 57: ...5 3 Touch PCB P N EBREBR79627601 P N EBR78789101 P N EBR76332902 NFC and Buzzer PCB ...

Page 58: ...5 4 Main PCB P N EBR83979601 Oven Relay PCB P N EBR80595401 Touch PCB P N EBR79627601 Wi Fi PCB P N EBR83227505 Buzzer PCB P N EBR76332902 For model LDE4415ST 01 LDE4415BD 01 ...

Page 59: ...5 5 Main PCB P N EBR83979601 P N EBR80595401 Oven Relay PCB CN40 CN20 CN61 CN60 CN01 CN51 CN53 CN50 CN22 CN53 CN52 CN51 CN21 ...

Page 60: ...5 6 Touch PCB P N EBREBR79627601 P N EBR83227505 P N EBR76332902 Wi Fi and Buzzer PCB ...

Page 61: ... press the upper BAKE and SPEED BROIL buttons at the same time 3 press the upper BAKE and SPEED BROIL buttons at the same time again 4 press the NUM 0 button 5 Press the START button SEQUENCE OF SVC TEST MODE Model Option Software version Only software version is displayed at the left digits ...

Page 62: ...tton the relay operation sequence should be as seen below Relay Operation Sequence SW Version Active Load Icon Lamp Lock Motor Bake Broil DLB RY 4 RY 3 RY 5 RY 6 RY 7 Lock Motor RY 10 Low C Fan RY 9 High C Fan RY 8 Conv Heater RY 11 Broil RY 12 DLB RY 13 Upper Oven Lower Oven 1 2 3 4 5 6 7 8 9 10 11 12 Step ...

Page 63: ...relays are open shorted Symptom no heating F9 F19 Check All heater relays and DLB relay are open Symptom Oven lamp not operating Check the Lamp coil s resistance Symptom Sensor error or no heating F1 F2 F9 F19 Check Sensor resistance Symptom Door lock fail F10 F20 Check relative part ...

Page 64: ... 1 Press the CLEAR button 2 Press the upper BAKE and SPEED BROIL buttons at the same time If the oven has a malfunction the Oven will show the failure Code like FIG 1 If the oven does not have any failure the Oven will look like FIG 2 NOTE After checking the F code press the CLEAR button to remove all codes CHECK THE FAILURE CODE FIG 1 FIG 2 Type of F Code Time of the failure occurrence Time of th...

Page 65: ...h PCB F6 Upper F16 Lower Oven hot The oven temperature is over 650 continuously for 2 minutes during cooking except self cleaning Oven Sensor F9 Upper F19 Lower Oven No heating EXCEPT PROOF WARM and EASY CLEAN Starting temperature of 130 or less and the oven door is closed the oven inside temperature does not go up more than 10 compared with the starting temperature for 5minutes after the start of...

Page 66: ...ptom Check Point 1 Power Failure Dead 2 No Display 1 Check Electrical Wiring 2 Check the Main PCB Input Voltage with CN1 TROUBLESHOOTING CHECKING FLOW CHART BY FAILURE CN01 CN01 Main PCB Thermostat L1 N WH RD ...

Page 67: ...eck the connection of Main PCB CN01 Normal Yes No 3 Check the button beep Touch the Clear button Can hear the beep sound No Yes 1 Reconnect If defective harness replace or fix Check the AC input of Main PCB Main PCB CN01 Pin 1 and 3 120V AC Yes No 4 Reconnect Replace the Thermostat Replace the Main PCB Check the Thermostat Normal Short Abnormal Open Normal Yes No 6 Check the connection of L1 and N...

Page 68: ...1 No heating 2 F9 F19 1 Check Electrical Wiring 2 Check Heater s Resistance 3 Check the Sensor A G H F J E I B C D Ⓑ Ⓐ Ⓖ Ⓒ Ⓓ Ⓔ Ⓕ Ⓗ Ⓘ Ⓙ RY5 Bake Heater Upper Broil Heater Upper Conv Heater Lower RY6 RY12 RY11 Broil Heater Lower RY7 RY13 L1 L2 ...

Page 69: ...7 6 TROUBLESHOOTING Symptom Check Point 1 No heating 2 F9 F19 1 Check Electrical Wiring 2 Check Heater s Resistance 3 Check the Sensor CN61 CN60 ...

Page 70: ...y PCB CN51 2 Electric wiring of relay PCB All taps 3 Electric wiring of electric element No Yes 1 Unplug the unit CN51 CN51 All Taps Upper Broil Upper Bake Lower Broil Conv heater Replace the Failed heater Is the connection of heater normal Measure the resistance of each heater The resistance is shown below No 2 Upper Broil Upper Bake Lower Broil Conv heater ...

Page 71: ...EED BROIL buttons at the same time 3 press the upper BAKE SPEED BROIL button at the same time again 4 press the NUM 3 button Normal Thermistor value at room temp is from 70 to 90 No Yes 3 Current Oven Temp Unplug the unit Replace the defective Thermistor Is the resistance of thermistor normal Check Pins 4 and 5 of CN60 and pins 5 and 6 of CN61 in main PCB Normal approximately 1 09kΩ at 75ºF 25ºC Y...

Page 72: ...7 9 TROUBLESHOOTING Symptom Check Point 1 Door Lock System Failure 2 F10 F20 1 Check the Electrical wiring 2 Check the Motor s Resistance 3 Check the Relay PCB Door Lock Relay CN61 CN60 CN60 CN61 CN61 ...

Page 73: ...7 10 TROUBLESHOOTING Symptom Check Point 1 Door Lock System Failure 2 F10 F20 1 Check the Electrical wiring 2 Check the Motor s Resistance 3 Check the Relay PCB Door Lock Relay CN60 CN61 ...

Page 74: ... operation of door lock motor Press Lower Clear Off button for 3 seconds and try to open the door Does the door open Door lock icon turns on No Yes 1 Plug in the unit Reconnect If defective harness replace or fix 2 Is the Connector disconnected or loose Check the following 1 Between Main PCB and Relay PCB CN51 2 Electric wiring CN52 and CN53 of relay PCB 3 Electric wiring of Locking Motor and Micr...

Page 75: ...itch normally open type Yes 3 No Is the resistance of the lock motor normal measure the resistance of lock motor Normal approximately 2 6kΩ Abnormal infinite or below 5 Ω Yes 4 No TROUBLESHOOTING Replace the micro switch Replace the lock motor Replace the Relay PCB NC COM Abnormal Normal ...

Page 76: ...7 13 TROUBLESHOOTING Symptom Check Point 1 Sensing Fail 2 F1 F4 3 F2 F5 1 Check the Electric Wiring 2 Check the Test Mode 3 Check the Sensor s Resistance CN61 CN61 CN60 CN60 ...

Page 77: ...ximately 1 09kΩ at 75ºF 25ºC Yes No TROUBLESHOOTING Sensing Fail F1 F4 F2 F5 Reconnect or adjust the connection Is the Connector disconnected or loose 1 Sensor connection 2 CN60 and CN61 of Main PCB No Yes 1 Unplug the unit Replace the defective Thermistor Upper Sensor connection Lower Sensor connection CN61 CN60 CN61 CN60 ...

Page 78: ...he test mode follow these steps 1 press the CLEAR button 2 press the upper BAKE and SPEED BROIL buttons at the same time 3 press the upper BAKE SPEED BROIL button at the same time again 4 press the NUM 3 button Normal Thermistor value at room temp is from 70 to 90 No Yes 3 Current Oven Temp Replace the Main PCB 4 ...

Page 79: ...int 1 Oven hot 2 F6 F16 1 Check the Resistance of the Relay 2 Check the Sensor s Resistance A G H F J E I B C D Ⓑ Ⓐ Ⓖ Ⓒ Ⓓ Ⓔ Ⓕ Ⓗ Ⓘ Ⓙ RY5 Bake Heater Upper Broil Heater Upper Conv Heater Lower RY6 RY12 RY11 Broil Heater Lower RY7 RY13 L1 L2 ...

Page 80: ...7 17 TROUBLESHOOTING Symptom Check Point 1 Oven hot 2 F6 F16 1 Check the Resistance of the Relay 2 Check the Sensor s Resistance CN61 CN61 CN60 CN60 ...

Page 81: ...ximately 1 09kΩ at 75ºF 25ºC Yes No 1 Unplug the unit Replace the Relay PCB Is the Heater relay normal Measure the resistance of heater relay and L Normal infinite Abnormal shorted Yes No 2 CN60 CN61 Upper Bake Heater Relay Upper Broil Heater Relay Convection Heater Relay Lower Broil Heater Relay Tab 01 and Tab 11 RY5 Tab 01 and Tab 12 RY6 Tab 02 and Tab 21 RY11 Tab 02 and Tab 22 RY12 ...

Page 82: ... 25 RY13 Replace the Main PCB Is the value of thermistor normal Refer below Check with the test mode To enter the test mode follow these steps 1 press the CLEAR button 2 press the upperBAKE and SPEED BROIL buttons at the same time 3 press the upper BAKE and SPEED BROIL buttons at the same time again 4 press the NUM 3 button Normal Thermistor value at room temp is from 70 to 90 No 4 Current Oven Te...

Page 83: ...7 20 TROUBLESHOOTING Symptom Check Point 1 Key not working 2 F3 Error 1 Check the Door Locking System 2 Check the Electric Wiring CN53 ...

Page 84: ...nit Plug in the unit CN53 Replace the Control panel With Glass Touch PCB And then check button operation using key test mode 1 press the CLEAR button 2 press the upper BAKE and SPEED BROIL button at the same time 3 press the upper BAKE SPEED BROIL button at the same time again 4 press the NUM 7 button 5 Check the button Refer to the next page appendix No 2 If button is not operated Replace the Mai...

Page 85: ... is accessed If Key is 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 2nd 35th Lower CLEAR OFF KEY OPERATION TEST SEQUENCE ...

Page 86: ... W Outer approx 52 Ω approx 52 Ω approx 64 Ω LF 1400 W Inner 1800W Outer approx 41 Ω approx 32 Ω CR 100 W approx 570 Ω Table 1 CN51 Pin Connection Pin No Function 1 Not use 2 Conv Fan Motor high speed control 3 Not use 4 Conv Fan Motor low speed control 5 Upper Door lock motor control 6 Lower Door loco motor control 7 Oven lamp control 8 Not use 9 Upper Bake Heater control 10 Lower Conv Heater con...

Page 87: ...ic 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 Upper BAKE WARM Upper BROIL EASY CLEAN ...

Page 88: ...8 3 LOWER BAKE CONV BAKE CONV ROAST LOWER BROIL ...

Page 89: ...8 4 UPPER SELFCLEAN LOWER SELFCLEAN ...

Page 90: ...8 5 OVEN LAMP CLOCK DISPLAY ON ...

Page 91: ...8 6 CR Cooktop element LR RR Cooktop element ...

Page 92: ...8 7 LF Cooktop element RF Cooktop element ...

Page 93: ...EXPLODED VIEW EV INTRODUCTION COOKTOP CONTROLL PARTS 9504 9506 W229 8511 9501 MODEL Customer Model Product Code SVC Model ...

Page 94: ... EV UPPER DOOR PARTS 1021 1009 170R 1035 1035 170L 1015 1020 173U 173U 1008 102S 102S 102L W243 1000 W222 1801 1455 ...

Page 95: ... EV LOWER DOOR PARTS 1041 1009 1115 1120 102L 1018 173L 102U W243 W222 W222 1100 1704 1704 102L 173L 102U W101 W101 1801 ...

Page 96: ... EV CONTROLLER PARTS 203L 203R 2034 2051 2048 W102 2006 260B 260M 2001 2030 3106 2042 2043 2044 2045 260K 2050 2381 MODEL Customer Model Product Code SVC Model ...

Page 97: ... EV COOKTOP CONTROLL PARTS W167 244D 244S 2026 2052 2082 2083 2085 2084 303R 2002 303L 244T W293 W293 W293 W293 W293 2041 ...

Page 98: ... EV COOKTOP PARTS 3056 3402 3099 3059 330S 330S 3022 330M 330H 3006 3204 3016 301C ...

Page 99: ...R CAVITY PARTS 5331 5501 5063 5504 5504 546L 5535 5535 546R 5516 5078 W222 W222 5515 5021 5541 3032 3206 3222 3207 3901 3130 W291 3208 5006 5511 4002 5078 3205 5539 5502 5020 3006 5537 5032 W291 W291 W291 5019 ...

Page 100: ...5020 5408 5509 5531 5511 5063 5512 5512 4002 5505 5505 6000 8508 8508 W291 W291 W291 5521 3501 6008 6008 3013 5073 5073 W230 W230 5518 5019 5032 5510 3057 5037 5409 5039 5405 W129 5401 5407 5406 W233 W232 5506 5556 5516 5021 5510 3057 5503 3511 5014 ...

Page 101: ......

Search results

Summary of Contents for LDE4415BD

Reviews:

Related manuals for LDE4415BD

Brands by name

Popular brands

LG LDE4415BD, Service Manual

Search results

Summary of Contents for LDE4415BD

Reviews:

Related manuals for LDE4415BD

Brands by name

Popular brands