LG LMXS307*6S Series Owner'S Manual Download

Page: 32 / 152

LG Electronics Training Center, LGEAI, U.S.A.

Caution

To reduce the risk of electrical shock, the appliance should be
unplugged when ever disassembling or reassembling components
with electrical connections.

Summary of Contents for LMXS307*6S Series

Page 1: ...LG Electronics Training Center LGEAI U S A A Next 4 Series Refrigerator LMXS307 6S w CustomChill Drawer ...

Page 2: ...enter LGEAI U S A Information Web Based Training Website http www lglearnservice com Global Service Front System GSFS Website including Service Content System http gsfs america lge com Product Information Website http www lg com ...

Page 3: ...t 4 Specifications Feature Changes on the A Next 4 Platform Disassembly Procedures and Hands on Teardown Electrical Circuits and Electrical Circuit Troubleshooting with Hands on Breakdown of Error Codes Linear Compressor Troubleshooting The Signature Refresh Overview Review of Current Service Bulletins Final Question and Answers ...

Page 4: ...4 LG Electronics Training Center LGEAI U S A Warranty of the A Next 4 ...

Page 5: ...5 LG Electronics Training Center LGEAI U S A Warranty From the Owners Manual ...

Page 6: ...6 LG Electronics Training Center LGEAI U S A Warranty From the Owners Manual ...

Page 7: ...7 LG Electronics Training Center LGEAI U S A Warranty From the Owners Manual Warranty Limitations ...

Page 8: ...8 LG Electronics Training Center LGEAI U S A Installation Procedures ...

Page 9: ...9 LG Electronics Training Center LGEAI U S A Installation From the Owners Manual ...

Page 10: ...10 LG Electronics Training Center LGEAI U S A Installation Freezer and Refrigerator Doors From the Owners Manual ...

Page 11: ...11 LG Electronics Training Center LGEAI U S A Installation Removing the Left and Right Doors From the Owners Manual ...

Page 12: ...12 LG Electronics Training Center LGEAI U S A Installation Leveling and Door Adjustment From the Owners Manual ...

Page 13: ...13 LG Electronics Training Center LGEAI U S A Information Given to the Customer at Point of Sale ...

Page 14: ...A Air Flow Configuration at the Bottom of the Refrigerator Note the Rubber Strip on the bottom of the Refrigerator is now positioned front to back instead of left to right on newer refrigerators Refrigerator Machine Compartment Cover in the back ...

Page 15: ...15 LG Electronics Training Center LGEAI U S A A NEXT 4 Series Specifications ...

Page 16: ...acity 29 7 cu ft Cabinet 31 in Depth Dispenser Tall Dispenser Ice System Slim Indoor Gen2 Ref Lighting Top Side LED Air Filter Yes Crisper 3 in 1 W Filter Compact in Door Frz Light LED Handle Ez Open Layout 3 Layer Feature Glide out Shelf DID Door Switch Reed Type Door Reed Switch Specification Middle Door Filter ...

Page 17: ...17 LG Electronics Training Center LGEAI U S A Specification Dimension Signature 1 4D S1 A NEXT4 N4 36 3 8 9 22 2 14 3 10 6 41 9 5 7 ...

Page 18: ...r status Control Panel Sets the refrigerator and freezer Temperatures the water filter condition and the dispenser mode EZ Handle Easily opens the freezer door Handle Opens and closes the door Button LED Light LED lights up when the Custom Chill Drawer is opened Custom Chill Drawer Freezer Preserves frozen food Refrigerator Preserves food LED Light LED lights up when the freezer door is opened Spe...

Page 19: ...elf The shelves in your refrigerator are Adjustable to meet your individual storage needs Door In Door Case The convenience of a soft cool Storage area and easy access to Items stored in this area Cheese Butter Bin Cheese Butter and Condiment bins are specially designed for food that can be stored at a warmer temperature This makes spreading butter and slicing cheese easier Easy Reach You can stor...

Page 20: ...20 LG Electronics Training Center LGEAI U S A Feature Changes on the A Next 4 Platform ...

Page 21: ...21 LG Electronics Training Center LGEAI U S A Fresh Air Filter Pure air Air purifying system 1 Step Total care Filtration 1st Deodorization filter Odor Module type with fan Deodor ...

Page 22: ...22 LG Electronics Training Center LGEAI U S A Feature Changes Glide N Access A NEXT 4 ...

Page 23: ...23 LG Electronics Training Center LGEAI U S A Feature Changes Door Switches A NEXT 4 Reed Switch Magnet ...

Page 24: ...24 LG Electronics Training Center LGEAI U S A Feature Changes Drawer Switches A NEXT 4 Reed Switch ...

Page 25: ...25 LG Electronics Training Center LGEAI U S A Feature Changes Ice Bin A NEXT 4 New Parts ...

Page 26: ...26 LG Electronics Training Center LGEAI U S A Feature Changes Water Filter A NEXT 4 Previous Location of filter on Signature models Previous Design ...

Page 27: ...27 LG Electronics Training Center LGEAI U S A Feature Changes CUSTOMCHILL Drawer A NEXT 4 ...

Page 28: ...28 LG Electronics Training Center LGEAI U S A Feature Changes CUSTOMCHILL Drawer A NEXT 4 ...

Page 29: ...29 LG Electronics Training Center LGEAI U S A Feature Changes Freezer Drawers A NEXT 4 ...

Page 30: ... The Easy Reach areas are located at the bottom of the Fresh Food Compartment They allow small items to be stored with easy access The temperature inside the Easy Reach is slightly lower than in the shelf or door bin area This provides an accessible location to defrost or thaw items ...

Page 31: ...31 LG Electronics Training Center LGEAI U S A Disassembly Procedures and Hands on Teardown ...

Page 32: ... LG Electronics Training Center LGEAI U S A Caution To reduce the risk of electrical shock the appliance should be unplugged when ever disassembling or reassembling components with electrical connections ...

Page 33: ...circuit 29Ԭ 33Ԭ 37Ԭ 42Ԭ Separate Thermistor M Room Sensor Damper M Room Stepping Motor from Fresh Food Compartment to control cold air flow Separate Heater M Htr to allow for higher temperature setting than Fresh Food Compartment Separate Door Switch M FU Door Switch and Light M FU LED Lamp Single Button Control ...

Page 34: ...34 LG Electronics Training Center LGEAI U S A Custom Chill Drawer ...

Page 35: ... needed 1 Screw Length 12mm pointed 2 Screwdriver 3 Slip Joint Pliers 1 Put a screw in the center of display 2 Drive a screw by using driver 3 Put the screw up by using a pliers 4 Disassemble Housing 5 Assemble housing to New display 6 Put display down and Press Display until assemble thoroughly ...

Page 36: ...36 LG Electronics Training Center LGEAI U S A Custom Chill Drawer Removal TM 1 Pull the drawer open to full extension 2 Separate housing Disconnect electrical Cable 3 Pull out door ...

Page 37: ...raining Center LGEAI U S A Custom Chill Drawer Cover Door S W TM 1 Remove screw 2 Remove screw 3 Unhook cover 4 Disassemble housing 5 Disassemble housing from cover 6 Remove screw 7 Disassemble sensor from connector rail ...

Page 38: ...er Valve Water Tank Connector Ice Maker Bucket City Water City Water Valve Filter Water Tank I M Disp Valve A NEXT4 Water Line Filter Connectors 9 EA Filter Tank Valve Connecting Point Delete Water Flow Module Design Connector Water Filter Water Line ...

Page 39: ...dule Replacement 1 Remove the bin 2 Remove screw 3 Disconnect the Valve housing 4 First Disconnect the Blue Tube and then Disconnect the Orange tube And finally the White Tube Reinstall tubing in this order Orange Blue white 5 Replace the new Module Filter ...

Page 40: ...I U S A Module filter Part Replacement 1 Remove these 3 screw 2 Holding the Connector turn 90 to disconnect from the Filter head Turn the Water Tank 90 to disconnect the Filter head 4 Module Filter part are now separated 3 Remove Snap Ring ...

Page 41: ...41 LG Electronics Training Center LGEAI U S A Removing the Multi Duct Assembly Multi Duct Assembly ...

Page 42: ...42 LG Electronics Training Center LGEAI U S A Removing the Multi Duct Assembly Remove these Covers Screws behind covers Remove Screws 3 No Screw Present ...

Page 43: ...43 LG Electronics Training Center LGEAI U S A Removing the Multi Duct Assembly Disconnect ...

Page 44: ...44 LG Electronics Training Center LGEAI U S A Refrigerator Evaporator Removing the Multi Duct Assembly ...

Page 45: ...45 LG Electronics Training Center LGEAI U S A Removing the Custom Chill Door Remove this bin ...

Page 46: ...46 LG Electronics Training Center LGEAI U S A Removing the Custom Chill Door Disconnect this Connection ...

Page 47: ...47 LG Electronics Training Center LGEAI U S A Removing the Freezer Door Open Freezer Door to full open position Remove Freezer Bins Remove the two screws on the Left and Right Rails Lift off door ...

Page 48: ...48 LG Electronics Training Center LGEAI U S A Removing the Freezer Evaporator Cover Freezer Evaporator Cover ...

Page 49: ...49 LG Electronics Training Center LGEAI U S A Remove Screws Removing the Freezer Evaporator Cover ...

Page 50: ...50 LG Electronics Training Center LGEAI U S A Removing the Freezer Evaporator Cover 3 on the Bottom of the Cover ...

Page 51: ...51 LG Electronics Training Center LGEAI U S A Removing the Freezer Evaporator Cover Remove these electrical connectors ...

Page 52: ...52 LG Electronics Training Center LGEAI U S A Removing the Freezer Evaporator Cover Cover Removed ...

Page 53: ...53 LG Electronics Training Center LGEAI U S A Removing the Freezer Evaporator Cover Back of Cover ...

Page 54: ...54 LG Electronics Training Center LGEAI U S A Removing Freezer Switch Electrical connect to Lower Freezer Magnetic Switch ...

Page 55: ...55 LG Electronics Training Center LGEAI U S A Accessing Dispenser Board Sub PCB Remove this Screw ...

Page 56: ...onics Training Center LGEAI U S A Removing the Display Panel Lock the display and remove the Drip Pan Carefully pull forward as you disengage the clips holding the assembly Display PCB Cap Duct Motor Cap Duct Door ...

Page 57: ...57 LG Electronics Training Center LGEAI U S A Electrical Circuits and Electrical Circuit Troubleshooting with Hands on ...

Page 58: ...Training Center LGEAI U S A Caution When doing live electrical checks the risk of fatal electrical shock are always present These checks should only be done by qualified personal Extreme caution should always be observed ...

Page 59: ...59 LG Electronics Training Center LGEAI U S A Freezer Heater Circuit COMMUNICATION CIRCUIT LOAD CIRCUIT MAIN PCB Thermal Fuse Freezer Defrost Sensor Freezer Defrost Heater ...

Page 60: ...60 LG Electronics Training Center LGEAI U S A 13 F 46º F Defrost Cycle ...

Page 61: ...61 LG Electronics Training Center LGEAI U S A Refrigerator Heater Circuit LOAD CIRCUIT COMMUNICATION CIRCUIT Thermal Fuse Refrigerator Defrost Sensor ...

Page 62: ...62 LG Electronics Training Center LGEAI U S A MAIN PCB MAIN PCB User Interface Main PCB Cooling Process ...

Page 63: ...63 LG Electronics Training Center LGEAI U S A User Interface Main PCB MAIN PCB Refrigerator Sensor Freezer Sensor Cooling Process CON 7 ...

Page 64: ...64 LG Electronics Training Center LGEAI U S A Cooling Process Main PCB ...

Page 65: ...65 LG Electronics Training Center LGEAI U S A MAIN PCB Cooling Process 3 Way Valve ...

Page 66: ...66 LG Electronics Training Center LGEAI U S A Cooling Process Condenser fan Freezer fan Fresh food fan ...

Page 67: ...ronics Training Center LGEAI U S A The Flex Tray Icemaker on the A Next 4 model unlike the Flex Tray on the previous Signature Models is now controlled by the CON 402 connector at the Main PCB Flex Tray Ice Maker ...

Page 68: ...68 LG Electronics Training Center LGEAI U S A Test Button Ice Maker on off Switch Ice Level Sensors Flex Tray Ice Maker ...

Page 69: ...69 LG Electronics Training Center LGEAI U S A Icemaker is now Controlled by the Main PCB ...

Page 70: ...ing Center LGEAI U S A Testing the Icemaker Step 1 Press the Test Button for 3 seconds If the ice make runs the harvest and water cycle correctly the icemaker s mechanism is preforming correctly Proceed to Step 2 Test Button ...

Page 71: ...71 LG Electronics Training Center LGEAI U S A Testing the Icemaker ...

Page 72: ...72 LG Electronics Training Center LGEAI U S A The Pilot Valve is located in the Machine Compartment The Ice Valve is located in a compartment in the left side Refrigerator door Water to the Icemaker ...

Page 73: ...73 LG Electronics Training Center LGEAI U S A Ice Room Fan The Flow Sensor is incorporated into the Pilot Valve Other Components used in Ice Production Process Pilot Valve ...

Page 74: ...74 LG Electronics Training Center LGEAI U S A Home Bar Heater The Home Bar Heater ...

Page 75: ...75 LG Electronics Training Center LGEAI U S A Speaker Humidity Sensor Smart Buzzer PCB Room Temperature Sensor Components located in the Right Door Hinge Cap Smart Buzzer PCB and Humidity Sensor ...

Page 76: ...tronics Training Center LGEAI U S A Sub PCB Dispenser PCB To Access PCB remove screw Sub PCB or Dispenser PCB The Sub PCB or also referred to as the Dispenser PCB is located at the top of the Left Fresh Food Door ...

Page 77: ...77 LG Electronics Training Center LGEAI U S A Relay 4 Pilot Valve Water Relay 3 Water Dispenser Valve Relay 2 CRUSH Relay 1 CUBE Sub PCB ...

Page 78: ...sub PCB The Dispenser PCB or Sub PCB receives commands from the Display PCB activates these components Auger Motor crushed and cubed Pillar Heater center Fresh Food Mullion Heater Pilot Valve for Dispensed Water Secondary Valve for Dispensed Water Cap Duct Motor ...

Page 79: ...79 LG Electronics Training Center LGEAI U S A 5Vdc to Dispenser PCB WIRE COLOR GREEN Neutral Circuit BLUE Run Winding Circuit RED Start Winding Circuit Crushed Ice ...

Page 80: ...80 LG Electronics Training Center LGEAI U S A 5Vdc to Dispenser PCB WIRE COLOR GREEN Neutral Circuit BLUE Run Winding Circuit RED Start Winding Circuit Cubed Ice ...

Page 81: ...81 LG Electronics Training Center LGEAI U S A Dispensing Water from the Dispenser 5Vdc to Dispenser PCB Pilot Valve Water Secondary Valve ...

Page 82: ...82 LG Electronics Training Center LGEAI U S A Cap Duct Door Motor Forward Reverse Forward Reverse ...

Page 83: ...83 LG Electronics Training Center LGEAI U S A From the Owners Manual Smart Diagnosis Instructions ...

Page 84: ...G Electronics Training Center LGEAI U S A Getting in and out of the Demo Mode With the refrigerator door in the open position press and hold the Refrigerator Adjust Ice Plus buttons until O FF is displayed ...

Page 85: ...85 LG Electronics Training Center LGEAI U S A Breakdown of Error Codes ...

Page 86: ...86 LG Electronics Training Center LGEAI U S A Error Codes From the Service Manual ...

Page 87: ...e to the sensor 0 or 5 Vdc would indicate a shorted or open Sensor or disconnect power to the refrigerator and check resistance 0 or ohms indicate a shorted or an opened sensor If sensor failed check the exposed Sensor wire connections outside of liner to determine if the wiring in the cabinet is the issue With the exception of the Pantry Room and Humidity Sensors all sensor errors will be display...

Page 88: ...5 Vdc 30 86 8 89 KΩ 1 27 Vdc 35 95 7 40 KΩ 1 10 Vdc 40 104 6 20 KΩ 0 96 Vdc Refrigerator and Defrost Sensors Temperature Resistance Voltage 40 40 73 29 KΩ 4 09 Vdc 35 31 53 63 KΩ 3 84 Vdc 30 22 39 66 KΩ 3 55 Vdc 25 13 29 62 KΩ 3 23 Vdc 20 4 22 33 KΩ 2 89 Vdc 15 5 16 99 KΩ 2 56 Vdc 10 14 13 05 KΩ 2 23 Vdc 5 23 10 10 KΩ 1 92 Vdc 0 32 7 88 KΩ 1 63 Vdc 5 41 6 19 KΩ 1 38 Vdc 10 50 4 91 KΩ 1 16 Vdc 15 5...

Page 89: ... by the Main PCB an error will be generated in approximately 60 seconds Typical feedback voltage is 2 to 4 Vdc The feedback circuit can be measured at the G and F connector of the fan in question at the Main PCB If the fan is running and an error code is displayed the fan motor s feedback circuit is defective and the motor needs replacing The Feedback signal at the main board will most likely be l...

Page 90: ...n hour has elapsed in the defrost Cycle and the defrost sensor has not reached the termination point of 46º F Check the Heater Thermal Fuse Heater Wiring Sensor and Main PCB If the error is displayed and the power to the refrigerator is disconnected the error will be erased and will not return until after the next defrost cycle MAIN PCB Freezer Fresh Food ...

Page 91: ...he Icemaker Kit to be replaced This Error can only be brought up manually It will not automatically display this error The ER gF Error occurred because there was no input from the Flow Meter Check the Flow Meter Inlet Valves Wiring and Main PCB This Error can only be brought up manually It will not automatically display this error An ER iT Error most likely will be a failure of the Icemaker Kit Fo...

Page 92: ...B Check the wire harness at the top of the Left Door check for 5Vdc at CON 5 pin 6 check for a communication signal at Display PCB CON 101 pins 1 2 and check the wiring in the Left Door Check the signal at either Main PCB Display PCB or harness at top of Left door a good signal will be a pulsing 5Vdc CON5 on the Main PCB CON 101 on Display PCB Connector at the Left Door Hinge ...

Page 93: ...93 LG Electronics Training Center LGEAI U S A Checking for Error Codes Press and hold the Freezer Adjust Ice Plus buttons ...

Page 94: ...94 LG Electronics Training Center LGEAI U S A Linear Compressor Troubleshooting ...

Page 95: ...2 2 to 2 8Vdc With compressor off Reason for the Fault Detecting Motor Current and Voltage Errors Points to Check Reference to A 2 2 to 2 8Vdc Reference to B 2 2 to 2 8Vdc Reference to C 2 2 to 2 8Vdc While compressor is off Device should not be dead shorted when you check C 1 Reset Power 2 Replace PCB if out of specification Inverter LED Blinking Codes ...

Page 96: ... Strokes Causes 1 If compressor works intermittently and the Led Blinks Check the harness to the compressor 2 If compressor works intermittently and blinks a Make sure condenser fan and Freezer is running b Check for Sealed System issues such as leak or restriction Logic Compressor is forced off and tries to start after 1 minute ...

Page 97: ...Fault Prevent Over voltage and Current Detecting when starting Cause Starting Error of the PCB and Compressor Capacitor Harness or Capacitor Open Compressor Winding Logic Compressor is forced off and tries to restart within 40 seconds Inverter LED Blinking Codes ...

Page 98: ...LED Blinking Codes Reason for the Fault Detects Locked Piston Cause Cylinder Cylinder Piston damaged or restricted discharge This can be caused by foreign material inside the compressor Logic Compressor is forced off and tries to restart within 2 5 seconds ...

Page 99: ...load protection Cause Ambient temperature is high over 43º C and or the refrigerator s air movement is restricted Condenser Fan Stopped Restricted Discharge line Compressor Damage or IPM is defective Logic Compressor is forced off and tries to restart after 6 minutes Inverter LED Blinking Codes ...

Page 100: ... Codes Reason for the Fault To prevent high current due to IPM Short Cause Dead Short at the IPM Test for a dead at Point A with a VOM Logic Compressor is Forced off and tries to restart in 20 seconds With refrigerator unplugged check for a dead short at CON201 pins 1 3 ...

Page 101: ... Reason for the Fault Detects Set Control MICON and Communication Errors Cause Communication Error Logic LED Blink Compressor runs reference value before occurring Communication Error Check the temperature and pressure of the compressor Make sure the condenser fan is running ...

Page 102: ...102 LG Electronics Training Center LGEAI U S A Measuring the Resistance on the Linear Compressor ...

Page 103: ...103 LG Electronics Training Center LGEAI U S A Quick Inverter Check ...

Page 104: ...104 LG Electronics Training Center LGEAI U S A Main PCB Schematic ...

Page 105: ...105 LG Electronics Training Center LGEAI U S A Schematic of Display and Sub PCB Dispenser PCB ...

Page 106: ...106 LG Electronics Training Center LGEAI U S A The Signature Refresh Overview ...

Page 107: ...their French Door Refrigerator product line Another designs that has evolved from the previous Signature Series 31 cu Ft series the Signature Refresh The Signature Refresh Series models LFXS29 and larger are the new updated version of the previous LFX29 and larger models Quick look at the Signature Refresh ...

Page 108: ...108 LG Electronics Training Center LGEAI U S A Feature Changes Glide N Access Signature Refresh Signature S ...

Page 109: ...109 LG Electronics Training Center LGEAI U S A Feature Changes Ice Bin Signature Refresh Signature S New Parts ...

Page 110: ...110 LG Electronics Training Center LGEAI U S A Feature Changes Smart Grid Signature Refresh Signature S Signature Refresh Smart Grid Ice On Off ...

Page 111: ...rid Signature Refresh Utility LG ThinQ Server Gateway Utility Cloud Service Click REF Manager Click Smart Saving Turn Demand Response functionality on If refrigerator is receiving signals from utility Refrigerator will lower energy usage during Event Time ...

Page 112: ...112 LG Electronics Training Center LGEAI U S A Smart Amp Signature Refresh Click REF Manager Sync Adjust Temperature or Turn Ice Plus On Send Adjustment to Refrigerator ...

Page 113: ...113 LG Electronics Training Center LGEAI U S A Smart Amp Signature Refresh ...

Page 114: ...nergy 13 E Star 14 E Star Capacity 31 cu ft 30 cu ft Dispenser Tall Dispenser Tall Dispenser Ice System Slim Indoor Gen2 Slim Indoor Gen3 Ref Lighting Top Side LED Top Side LED Air Filter Yes Yes Crisper 3 in 1 3 in 1 W Filter Compact Compact Frz Light LED LED Handle Ez Open Ez Open Layout 3 Layer 3 Layer Feature Glide out Shelf DID DID Door Switch Push Button Type Reed Type ...

Page 115: ...he previous design We have seen multiple cases where the Door Switches are not reconnected after the Door was removed for installation We feel that since there is no aspect of the Door Switch seen externally it may be easy to neglect Please make sure that the Door Switches are reconnected at the time of installation of a range of Freezer or Fresh Food temperatures Feature Changes Door Switches Sig...

Page 116: ...116 LG Electronics Training Center LGEAI U S A Door Hinge Covers Previous Models New Models LFXS327 LFXS307 LFXS296 LFXC247 LMXS307 LFX329 LFX319 LFX299 LFX259 ...

Page 117: ...tch Reed Switch Previous Models New Models Note that on the Freezer Drawer Switches LG is now using the same type od Switches that are now used on the doors Once again there are no physical protrusions Please use caution when handling the corresponding Drawers and make sure to not damage the magnet housing ...

Page 118: ...Signature Refresh only Twist N sever icemaker On Off Switch On Off Switch at Display Previous Models The Signature Refresh models LFXS feature a new design Ice Maker On these models the Ice Maker is turned On or Off by holding the Ice Plus Ice In Off button on the Display Panel for 3 seconds ...

Page 119: ...gnature models used LEDs 3 in each side in the bottom of each Fresh Food Door to light the interior of the Freezer Compartment The Signature Refresh models use 4 LEDs under the Right Door only to light the Freezer Compartment The Signature Refresh Left Door still has a provision in the molding for LEDs however it is not used Previous Models New Models ...

Page 120: ... S A Sub PCB Change Signature Refresh Signature S Signature Refresh SR In the Signature models the Sub PCB Dispenser Relay Board was located behind the Dispenser In the Signature Refresh model the Sub PCB is located in the top of the Left Door ...

Page 121: ...B Removal 1 Remove 1 Screw 2 Carefully lift the cover 3 Reverse the cover 4 Disconnect capacitor housing 5 Disconnect wire harness Sub PCB Replacement 1 Reverse the Sub PCB cover 2 Connect wire harness 3 Connect the capacitor housing 4 Insert the cover left edge first 5 Assemble 1 screw ...

Page 122: ...onics Training Center LGEAI U S A Heaters Signature Refresh Pillar Heater Water Pipe Heater Ice Maker Heater Beta Duct Heater Ice Room Fan Heater DID Heater R Evap Heater Drain Heater F Evap Heater 1 F Evap Heater 2 ...

Page 123: ...123 LG Electronics Training Center LGEAI U S A Additional Heaters Signature Refresh R Eva F Eva R Eva F Eva ...

Page 124: ...124 LG Electronics Training Center LGEAI U S A Additional Heaters Signature Refresh Ice Room Fan Heater Drain Heater ...

Page 125: ...125 LG Electronics Training Center LGEAI U S A Review of Current Service Bulletins ...

Page 126: ...126 LG Electronics Training Center LGEAI U S A Current Service Bulletins SB 1406 002 ...

Page 127: ...127 LG Electronics Training Center LGEAI U S A Current Service Bulletins SB 1406 002 continued ...

Page 128: ...128 LG Electronics Training Center LGEAI U S A Current Service Bulletins SB1409001 ...

Page 129: ...129 LG Electronics Training Center LGEAI U S A Current Service Bulletins SB1409001 continued ...

Page 130: ...130 LG Electronics Training Center LGEAI U S A Current Service Bulletins SB1409001 ...

Page 131: ...131 LG Electronics Training Center LGEAI U S A Current Service Bulletins CREF20141610 continued ...

Page 132: ...132 LG Electronics Training Center LGEAI U S A Current Service Bulletins CREF20141610 continued ...

Page 133: ...133 LG Electronics Training Center LGEAI U S A Current Service Bulletins CREF20141610 continued ...

Page 134: ...134 LG Electronics Training Center LGEAI U S A Current Service Bulletins CREF20141610 continued ...

Page 135: ...135 LG Electronics Training Center LGEAI U S A Current Service Bulletins ...

Page 136: ...136 LG Electronics Training Center LGEAI U S A Current Service Bulletins continued ...

Page 137: ...137 LG Electronics Training Center LGEAI U S A Final Question and Answers ...

Page 138: ...es F b 36 degrees F c 42 degrees F d 46 degrees F 2 TRUE or FALSE The Inverter PCB can vary the voltage and frequency to the Linear Compressor 3 What is the status of the refrigerator and freezer fans when the doors are in the opened position a On b Off c Standby d Intermittent 4 TRUE or FALSE The Ice Room Fan turns on during defrost and when the doors are open ...

Page 139: ...5Vdc 6 On the A next 4 refrigerator where has the Sub PCB or Dispenser PCB been moved to a Top of the Left Door b Bottom of the Left Door c A different position on the Control Panel d It has not been moved 7 Once the ice has been dispensed how long will the cap duct door remain open a It immediately closes b 1 second c 3 seconds d 5 seconds ...

Page 140: ... What causes the ER gF Error a No input from the Flow Meter b Hall Sensor did not detect Icemaker Tray movement c Main PCB not communicating with the display PCB d The Thermal Fuse is bad 10 What is generated when the Main PCB registers 0 or 5Vdc at the sensor connection a Fan errors b Sensor Errors c Defrost Errors d Communication Errors ...

Page 141: ...es F b 36 degrees F c 42 degrees F d 46 degrees F 2 TRUE or FALSE The Inverter PCB can vary the voltage and frequency to the Linear Compressor 3 What is the status of the refrigerator and freezer fans when the doors are in the opened position a On b Off c Standby d Intermittent 4 TRUE or FALSE The Ice Room Fan turns on during defrost and when the doors are open ...

Page 142: ...5Vdc 6 On the A next 4 refrigerator where has the Sub PCB or Dispenser PCB been moved to a Top of the Left Door b Bottom of the Left Door c A different position on the Control Panel d It has not been moved 7 Once the ice has been dispensed how long will the cap duct door remain open a It immediately closes b 1 second c 3 seconds d 5 seconds ...

Page 143: ... What causes the ER gF Error a No input from the Flow Meter b Hall Sensor did not detect Icemaker Tray movement c Main PCB not communicating with the display PCB d The Thermal Fuse is bad 10 What is generated when the Main PCB registers 0 or 5Vdc at the sensor connection a Fan errors b Sensor Errors c Defrost Errors d Communication Errors ...

Page 144: ...ns Feature Changes on the A Next 4 Platform Disassembly Procedures and Hands on Teardown Electrical Circuits and Electrical Circuit Troubleshooting with Hands on Breakdown of Error Codes Linear Compressor Troubleshooting The Signature Refresh Overview Review of Current Service Bulletins Final Question and Answers Review ...

Page 145: ...145 LG Electronics Training Center LGEAI U S A Extras ...

Page 146: ...I U S A Hard to Find Part Numbers REF UV Dye Driers Inlet Dia P no Type Detail ID 2 2mm ADH73150202 1 Eva Standard ADH73150207 w Charge Port ID 4 2mm ADH73150201 2 Eva Standard ADH73150206 w Charge Port Varied ADH73150208 Either w Extension ...

Page 147: ...JB2001B White Leads Refrigerator Room Temperature Defrost Sensors 6500JB2002B Navy Blue Leads sub to 6500JB2002T Freezer Icing Room IM Tray Sensors 6500JB2001B 6500JB2002B Universal Replacement Refrigerator Sensors Splice using solder heat shrink tubing ...

Page 148: ...920 Test Lead Service Kit VOM Test Lead Adapters Fluke 8845A EFPT Test Lead Adapter 3 amp 300VDC Fluke TP920 Service Kit These items are available through your local supplier or an internet supplier These are not available through LG Other mfg s offer similar test lead adapters See your local supplier or visit the internet ...

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