LG DLE4870 Series, Service Manual

Page 1: ...UAL CAREFULLY IN ORDER TO PROPERLY DIAGNOSE PROBLEMS AND TO SAFELY PROVIDE QUALITY SERVICE ON THESE DRYERS U S A Website http us lgservice com Canadian Website http lg ca MODEL DLE4870 DLG4871 DLE4901 DLG4902 DLE4970 DLG4971 DLE5001 DLG5002 DLE5070 DLG5071 ...

Page 2: ...OCT 2012 PRINTED IN KOREA P No MFL62119914 ...

Page 3: ... of the safety warnings in this manual could result in property damage personal injury or death WARNING WHAT TO DO IF YOU SMELL GAS IMPORTANT SAFETY NOTICE RECONNECT ALL GROUNDING DEVICES IMPORTANT Do not try to light a match or cigarette or turn on any gas or electrical appliance Do not touch any electrical switches Do not use any phone in your building Clear the room building or area of all occu...

Page 4: ...TOR TEST MEASURE WITH POWER OFF 23 9 3 TEST 3 MOTOR TEST 24 9 4 TEST 4 MOISTURE SENSOR 25 9 5 TEST 5 DOOR SWITCH TEST 26 9 6 TEST 6 HEATER SWITCH TEST ELECTRIC TYPE 27 9 7 TEST 7 GAS VALVE TEST GAS TYPE 28 9 9 TEST 8 MOTOR ASSEMBLY DC PUMP 29 10 CHANGE GAS SETTING NATURAL GAS PROPANE GAS 30 11 DISASSEMBLY INSTRUCTIONS 32 12 EXPLODED VIEW 40 12 1 CONTROL PANEL AND PLATE ASSEMBLY 40 12 2 1 CABINET A...

Page 5: ...label on the dryer Gas 120 VAC Electric 240VAC Specifications are subject to change by manufacturer See page 6 of this manual for usage instruction Size 27 X 28 9 X 45 3 inch Dryer capacity IEC 7 3 cu ft Weight 127 4 Ibs Dryer rack 1 each Not on all models OPTIONAL ACCESSORIES 5 ...

Page 6: ...f Dry Levels Reversible Door Drum Dryer Rack Child Lock Interior Light Product WxDxH Sensor Power Supply Material Finish Spray 120 V 60 Hz 11 5 A 120 V 240 V 60 Hz 26 A 120 V 208 V 60 Hz 23 A 250W 4 5A 5400W 22 5A 15 W 0 2A 13 W 0 11A x 2 1100W 9 2A 2 4W 0 15A Electronic 7 3 cu ft 127 4 14 6 5 5 Available Available Available Stainless Steel Available Available Available 27 x 28 9 x 45 3 inch Packi...

Page 7: ...ON INSTRUCTIONS Dryer Rack Installation Instructions Open the door Hold the dryer rack with both hands Put the dryer rack into the drum Check and be sure that the front of the rack is properly seated behind the lint filter COTTON NORMAL 7 ...

Page 8: ...erminal block screws 3 Connect the ground wire green of the power cord to the external ground screw Remove the neutral ground wire of appliance and connect it to center screw 4 Make sure that the strain relief screw is tightened and that all terminal block nuts are tight and the power cord is in the right position If your local codes or ordinances do not allow the use of a 3 wire connection or you...

Page 9: ...nces do not allow the connection of a frame grounding conductor to the neutral wire use the instructions under Section 3 Optional 3 wire connection 1 Connect the neutral white or center wire B to the center silver colored screw A and tighten securely 2 Connect the other two power cord wires red and black to the left and right terminal block screws and tighten securely 3 Tighten the strain relief s...

Page 10: ...onnector Useonly if allowed by local codes Use Design A G A Certified Connector 2 1 8 N P T Pipe Plug for checking inlet gas pressure 3 E q u i p m e n t S h u t O f f V a l v e I n s t a l l e d within 6 1 8 m of dryer 4 Black Iron Pipe Shorter than 20 6 1 m Use 3 8 pipe Longer than 20 6 1m Use 1 2 pipe 5 3 8 N P T Gas Connection 3 Connect to gas supply pipe using a new flexible stainless steel c...

Page 11: ... Conditions of operation and termination Temp erature Dry Level Display time Motor Heater Very Dry Normal Adjustable Normal Adjustable Normal Adjustable Normal Adjustable Normal Adjustable Normal Adjustable Normal Adjustable Normal Adjustable Off Off Off 70min 55min 54min 36min 41min 32min 55min 30min 27min 25min 20min 30min 5min 5min 5min 5min 5min 5min 5min 5min 5min 5min 5min 5min Saturation Sa...

Page 12: ...esistance value 5Ω Resistance value Resistance value 5Ω Resistance value 1Ω Resistance value Resistance value Resistance value 1Ω Resistance value 80Ω 100Ω 1 lever open Resistance value 1Ω 2 Lever push close Resistance value Check Top Marking N140 2 Hi limit Thermostat Auto reset 3 Outlet Thermostat Auto reset Check Top Marking N85 4 Lamp holder 5 Door switch Measure resistance of the following te...

Page 13: ...n at 370 F Maximum Close at 320 F 8 Thermistor Measure resistance of terminal to terminal Temperature condition 9 Motor See Page 14 10 Gas valve Resistance value 10Ω Resistance value 10Ω Resistance value 20Ω Resistance value 10Ω Electric type Heater case Hi limit Electric type Gas type Gas type Gas type Resistance value 50 800 Ω Resistance value 1 5kΩ Resistance value 1 5 2 5kΩ Resistance value Re...

Page 14: ...t 203 41 F 95 5 C Close at 159 41 F 70 5 C Gas type Gas funnel Gas type Gas funnel Measure resistance of terminal to terminal Open at 230 41 F 110 5 C Manual reset Resistance value Continuity 1Ω Check Top Marking N95 Check Top Marking N100 Resistance value Continuity 1Ω Component Test Procedure Check result Remark 14 ...

Page 15: ...ct On Off by Centrifugal Switch RUN MODE Motor operates STOP MODE When Motor does not operate Motor 2 3Ω 3 5Ω 1Ω 1Ω ᴾᴬ ᴾᴬ Terminal No Mode Centrifugal switch Centrifugal switch Pull Drive forward Resistance Remark Motor STOP Motor RUN Motor Heater Electric Models Heater Electric Models Gas Valve Gas Models Gas Valve Gas Models 15 ...

Page 16: ...el all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangrous operation Verify proper operation after servicing CAUTION ELECTRIC DRYER WIRING DIAGRAM GAS DRYER WIRING DIAGRAM 16 ...

Page 17: ...or hoses decrease efficiency in drying clothes Clogged vents can also cause fire This function alarms you when to clean the ducts When the alarm about duct clogging is on display of the panel your duct vents should be cleaned by yourself or serviceman 8 1 Flow sensor Flow Sensor Function Flow Sensor Function 17 ...

Page 18: ...last about two minutes The heat will be turned on and the temperatures in the drum will be measured During the three minute test cycle monitor the Flow Sense display on the control panel If no bars are displayed when the cycle ends the exhaust system is adequate If the exhaust system is severely restricted the display will show four bars Other problems may also be shown with error codes Refer to t...

Page 19: ...he dryer will start the test which will last about two minutes The heat will be turned on and the temperatures in the drum will be measured During the three minute test cycle monitor the Flow Sense display on the control panel If no bars are displayed when the cycle ends the exhaust system is adequate If the exhaust system is severely restricted the display will show four bars Other problems may a...

Page 20: ...routed Keep the area around the dryer clean and free of clutter Check the vent hood for damage or lint clogging Make sure the area around the vent hood is clear FLOW SENSETM indicator shows four bars during the drying cycle or the display drying many turns restrictions ductwork due to lint buildup or debris restriction in the external dryer venting Install a shorter or straighter duct run See the ...

Page 21: ...mistor open tE1 PGM Ver 8E8 V008E8 V00 8E9 Elec Type 898 Gas Type Thermistor shorted tE2 AG Thermistor open or shorted tE4 Pump Error Pump runs E5 Power off OO Motor runs Displays Moisture Sensor Operation If moisture sensor is contacted with damp cloth The display number is below180innormalcondition 30 Low moisture 239 High moisture Current Temp 5 70 Current Temp 5 70 Pump AD valve 11 255 Electri...

Page 22: ...between connector BK2 or WH2 Black Wire linked to the Controller and BL2 White Wire Is 110 125V Check if the Controller wire is disconnected Check if Terminal Block and Power Cord are connected Check Plug Does Power Cord N Natural line match to Terminal Center N Natural line Replace controIler Reconnect the controller Check if Power Cord is properly connected Check the fuse or circuit breaker YES ...

Page 23: ... Relay Black Housing Black Tab Relay Check the Matching color Between Harness wire and Tab Relay White Housing White Tab Relay White Low Extra Low Low Extra Low on on on on on O O O O on off off Temperature Control below 68 4 Turn on Heater1 and Heater2 Temperature Control below 52 4 Only Turn on Heater1 Temperature Control below 70 4 Turn on Burner PCB ASSEMBLY LAYOUT Temperature Control below 47...

Page 24: ... and Wire ၂ ၃ CROSS Wire ၂ ၃ CROSS Off Off Normal Heater1 Off Off Off Normal Heater2 Off Off Off Power Off Power Off Power On Power On Power Off Power Off Heater1 Operation black Heater1 Operation black Heater2 Operation White Heater2 Operation White PCB condition Of operation PCB condition Of operation 3 Incorrect Connection Error and Results Incorrect Connection of the Tab Relay and Connector Ho...

Page 25: ...ange Wire to controller Check if control and the 6 pin connector are properly connected Replace controller Replace thermistor Check if resistance is in the range of Table 1 when measuring resistance between terminals after separating harness from thermistor assembly connector Check harness linking connector Take the NA6 Connector from the Controller NO NO YES YES Table 1 Resistance for Thermistor ...

Page 26: ...ector Replace outlet Thermostat Refer to component Check Idler assembly Drum belt cuts off Drum belt takes off from Motor pulley Replace Idler switch Is resistance below 3Ω between connector BL2 White wire and WH4 Yellow wire Measure while door is closed Is resistance below 3Ω between connector WH4 Yellow wire and WH4 Brown wire Is resistance below 1Ω between terminals of outlet thermostat attache...

Page 27: ...elow 1Ω Check electro Load and harness connector Check harness linking connector Replace control and check When contacting cloth to electro load 1 Is the measurement within the range of Table 2 during Diagnostic Test 2 Is the measurement within the range of Table 2 when measuring the voltage in the NA6 connector s Pin Orange wire and Pin Blue wire Normal Condition IMC 70 40 40 20 10 Dried clothes ...

Page 28: ...efer to component testing Check lamp When opening lamp replace then measure again Door switch check Refer to component testing Door switch check Refer to component testing Door switch check Refer to component testing Measure while door is open Check it resistance is 300 60 Ω between BL2 White wire and BK2 Black wire Connector BL2 WH4 after taking BL2 WH4 out from controller Measure while door is o...

Page 29: ...ition YES NO Check motor and replace it 1 Is resistance between heater terminal and below 18 22Ω 2 Is resistance between heater terminal and below 18 22Ω 3 Is resistance between heater terminal and below 9 11Ω YES NO Replace heater Check if the value of measured resistance is below 1Ω between terminal TH2 Safety thermostat YES NO Replace TH2 Safety thermostat and TH3 Hi Limit thermostat Check if t...

Page 30: ...e than DC 90V 10 sec after Igniter off When measuring terminal resistance on valve 1 and valve 2 valves are more than1 5 2 5kΩ Measure after off If valve 1 and valve 2 are under DC 10V valves are Off Harness check Controller change Check thermostat hi limit safety Check Igniter frame detect Check gas connection or gas supply Change valve Change valve YES YES YES YES YES NO NO NO NO NO NO Valve 1 N...

Page 31: ...e During diagnostic test E5 error occur Turn the dryer s power off then measure resistance After activating the diagnostic test press START PAUSE button 4 times Is AD value displayed higher than 10 Replace the DC pump Normal condition YES NO diagnostic test go to page 23 Test 8 Motor Assembly DC Pump Caution Trouble Symptom MeasurementCondition 31 ...

Page 32: ...ne LP using natural gas could result in fire explosion or personal injury Conversion must be done a qualified technician The dryer is set for natural gas at the factory A propane conversion kit is available through the parts department to licensed technicians only The part numbers are listed below 32 ...

Page 33: ...VE 2 FLAME DETECT GAS VALVE STRUCTURE GAS VALVE FLOW START KEY PUSH DRYING F F O 2 E V L A V N O 1 E V L A V VALVE 2 ON IGNITER ON FLAME DETECT OPEN IGNITER TEMPERATURE ABOUT GAS IGNITION FLAME DETECT CLOSE VALVE 2 OFF NO NO YES YES 33 ...

Page 34: ...t each corner of the back panel then roll it forward so it rests on top of the dryer 3 With a flat blade screwdriver press the tabs on the side of the PWB PCB box and gently pry it open 4 Disconnect the wiring from the PWB PCB board 5 Disassemble the control panel assembly from top cover Disassemble and repair the unit only after pulling out power plug from the outlet 34 ...

Page 35: ...L PANEL REAR ELECTRIC 1 Remove 8 screws from control panel assembly 2 Separate PCB from control panel 1 Remove 1 screw 2 Pull out the cover 1 Remove 3 screws 2 Disassemble terminal block and wire from panel rear 35 ...

Page 36: ...checking the safety cover press the holder with flat tip screw driver inside the top cover 1 Remove 1 screw for lifting safety cover 3 Open the top cover 4 Disassembly top cover from cabinet assembly WARNING when you press the holder be careful scratch For preventing the scratch prepare the soft material 36 ...

Page 37: ... door and remove the 4 screws from the cabinet cover then close the door 2 Remove the 2 screws then tilt the cabinet cover toward the front of dryer slightly 3 Disconnect wiring to the door switch and lift the cabinet cover 37 ...

Page 38: ... removing the screw 3 Slide the shield up and remove 4 Remove the bulb and replace with a 15 watt 120 volt candelabra base bulb 5 Replace the lamp shield and screw 1 Disassemble the top plate 2 Remove cabinet cover 3 Disconnect the door lamp and electrode sensor connector 4 Remove 4 screws 5 Disassemble the tub drum Front WARNING WHEN YOU DISASSEMBLY THE LAMP CONNECCTOR BE SURE TO TAKE GLOVES AND ...

Page 39: ...SK OF PERSONAL INJURY ADHERE TO ALL INDUSTRY RECOMMENDED SAFETY PROCEDURES INCLUDING THE USE OF LONG SLEEVED GLOVES AND SAFETY GLASSES FAILURE TO FOLLOW ALL OF THE SAFETY WARNING IN THE MANUAL COULD RESULT IN PROPERTY DAMAGE PERSONAL INJURY OR DEATH 1 DRYER EXHAUST CHANGE DUCT TAPE DUCT TAPE DUCT TAPE 2 2 2 1 ڹ ڹ ں ڻ 3 1 3 2 39 ...

Page 40: ...ate 2 Remove the cabinet cover and tub drum Front 3 Remove the drum assembly 4 Remove 2 screws and cover Air guide 5 Remove the bolt and washer 1 Disassemble the top plate 2 Remove the cabinet cover and tub drum Front 3 Remove the drum assembly 4 Remove 7 screws 5 Pull the tub drum Rear towards the front 6 Remove the fan 7 Disconnect the motor clamp and motor 40 ...

Page 41: ...e the filter and 2 screws 1 Disassemble the top plate 2 Remove the cabinet cover and tub drum Front 3 Remove the drum assembly and tub drum Rear 4 Disconnect the air duct from the tub drum Front 4 Remove the air duct 5 Remove the roller from the tub drum Front and tub drum Rear 41 ...

Page 42: ...12 EXPLODED VIEW 12 1 Control Panel and Plate Assembly A140 A120 A215 A570 A210 A150 A130 A110 A211 A211 42 ...

Page 43: ... A430 A410 A475 In case before September 2013 Production Locker Hook MFG62959101 In case before September 2013 Production If Cover Assembly Cabinet A310 is replaced Locker Hook A410 Tub Assembly Drum K210 Cap Hole A314 have to be replaced all together In case before September 2013 Production Locker Assembly 4027EL2001A A311 A610 A315 A314 A550 43 ...

Page 44: ...Production If Cover Assembly Cabinet A310 is replaced Locker Hook A410 Tub Assembly Drum K210 Cap Hole A314 have to be replaced all together In case before September 2013 Production Locker Assembly 4027EL2001A A700 A320 A330 A314 A310 A400 A420 A430 A440 A545 A450 A475 A470 A540 A520 A131 A510 A500 A550 A600 A212 A212 A800 A311 A315 A410 44 ...

Page 45: ...ectric Type K120 K100 K130 K225 K222 K221 K224 K230 K210 K350 K240 F130 F110 F120 F140 K540 K660 K515 K510 K520 K251 K250 K550 K560 K655 K530 K610 K620 K360 K330 K320 K340 K310 K251 K250 K140 K400 F200 K650 K651 K600 K640 K335 K336 45 ...

Page 46: ...5 K222 K221 K224 K230 K210 K350 K240 M141 M160 M171 M170 M140 M110 M181 M180 M190 M150 M240 M220 M230 M250 M210 K515 K510 K520 K640 K600 K650 K655 K651 K530 K251 K250 K550 K560 K360 K620 K610 K310 K340 K320 K330 K250 K251 K140 K400 F200 K540 K660 K335 K336 46 ...