LG DLE3500 series Service Manual Download Page 1

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ELECTRIC & GAS DRYER

SERVICE MANUAL

CAUTION

READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS PROPERLY AND TO PROVIDE
QUALITY SERVICE SAFELY ON THESE DRYERS.

U.S.A. Website: http://us.lgservice.com

Canadian Website: http://lg.ca

MODEL : DLEX3900* DLGX3901*

DLEX3700* DLGX3701*

DLE3500* DLG3501*

Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means),

publication, modification, copying or transmission of 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.

2018

CONFIDENTIAL

Summary of Contents for DLE3500 series

Page 1: ...tribution including by way of email facsimile or other electronic means publication modification copying or transmission of 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 Servi...

Page 2: ...yhu zkhuh1 HVG pd gdpdjh ru zhdnhq wkh hohfwurqlf frqwuro dvvhpeo 1 Wkh qhz frqwuro dvvhpeo pd dsshdu wr zrun zhoo diwhu uhsdlu lv ilqlvkhg exw idloxuh pd rffxu dw d odwhu gdwh gxh wr HVG vwuhvv1 Use an anti static wrist strap Connect wrist strap to green ground connection point or unpainted metal in the appliance OR Wrxfk rxu ilqjhu uhshdwhgo wr d juhhq jurxqg frqqhfwlrq srlqw ru xqsdlqwhg phwdo ...

Page 3: ...POWER OFF 10 3 TEST 3 MOTOR TEST 10 4 TEST 4 MOISTURE SENSOR 10 5 TEST 5 DOOR SWITCH TEST 10 6 TEST 6 HEATER SWITCH TEST ELECTRIC TYPE 10 7 TEST 7 GAS VALVE TEST GAS TYPE 10 8 TEST 8 MOTOR ASSEMBLY DC PUMP 10 9 TEST 9 GENERATOR ASSEMBLY 11 CHANGE GAS SETTING NATURAL GAS PROPANE GAS 12 DISASSEMBLY INSTRUCTIONS 13 EXPLODED VIEW 13 1 CONTROL PANEL AND PLATE ASSEMBLY 13 2 PANEL DRAWER ASSEMBLY AND GUI...

Page 4: ...o the rating label regarding detailed information 27 W X 30 D X 38 H 51 D with door open 68 6 cm W X 76 1 cm D X 98 3 cm H 129 7 cm D with door open 11 16 Size Weight Dryer capacity Normal Cycle IEC 7 4 cu ft 22 5 lb 10 2 kg Steam Cycle IEC 7 4 cu ft 8 lb 3 6 kg Gas 124 7 lb 56 6 kg 137 5 lb 62 4 kg Electric 122 0 lb 55 3 kg 134 1 lb 60 8 kg Power supply Pedestal 1 each Purchased Separately 4 ...

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Page 6: ...ryer Rack Installation Instructions Open the door DLEX3900 DLGX3901 DLEX3700 DLGX3701 DLE3500 DLG3501 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 ...

Page 7: ...s Do not use a stacking kit with a gas dryer in potentially unstable conditions like a mobile home Stacking Kit Installation Instructions Place the washer firmly on a stable even and solid floor as product installation instructions describe in the owner s manual Do not attempt this alone At least two people are required to lift and position the dryer on top of a washing machine Failure to heed thi...

Page 8: ...iance and pedestal assembly must be placed on a solid sturdy level floor for proper operation Insert the T clip of the 4 retainers into the dryer base as shown Press up on the back of the clip and pull outward to lock into place Place the dryer on the pedestal Make sure the front and back feet are in the correct positions The dryer feet will fit into the innermost positions as shown Make sure the ...

Page 9: ...g 11 2 inch 3 8 cm from 3 other wires peel insulation back 1inch 2 5 cm Make ends of 3 wires a hook shape Then put the hooked shape end of the wire under the screw of the terminal block hooked end facing rightward and pinch the hook together and screw tightly Use the instructions under option 1 if your home home has a 4 wire receptacle NEMA type 14 30R If this type is available at your home you wi...

Page 10: ...of the wire under the screw of the terminal block hooked end facing rightward and pinch the hook together and screw tightly 1 2 5 cm 3V2 8 9 cm 3 wire connection Direct wire 1 Connect the neutral wire white of the power cord to the center terminal block screw 2 Connect the red and black wires to the left and right terminal block screws 3 Connect the ground wire green of the power cord to the exter...

Page 11: ...or ordinances permit the connection of a frame grounding conductor to the neutral wire use these instructions If your local codes or ordinances do not allow the connection of a frame grounding conductor to the neutral wire use the instructions under Option 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 t...

Page 12: ...rear of the dryer Make sure you do not damage the pipe thread when removing the cap 3 Connect to gas supply pipe using a new flexible stainless steel connector 4 Tighten all connections securely Turn on gas and check all pipe connections internal and external for gas leaks with a non corrosive leak detection fluid 5 For LP Liquefied Petroleum gas connection refer to section on Gas Requirements For...

Page 13: ...13 3 3 Connect Inlet Hose 21 8 150 800 800 ...

Page 14: ...le Off Time 6 min On Time 10 sec Sensor dry Dry Level is set by users Manual dry Temperature control is set by users Default settings can be adjusted NOTE The Energy Saver option is turned on by default in the Cotton Normal cycle Turn off the Energy Saver option for a faster Normal cycle which begins with heated drying To turn the Energy Saver default off press and hold the Wrinkle Care button for...

Page 15: ...Sensor dry Dry Level is set by users Manual dry Temperature control is set by users Default settings can be adjusted NOTE The Energy Saver option is turned on by default in the Cotton Normal cycle Turn off the Energy Saver option for a faster Normal cycle which begins with heated drying To turn the Energy Saver default off press and hold the Wrinkle Care button for three seconds ON or OFF appears ...

Page 16: ...y Dry Level is set by users Manual dry Temperature control is set by users Default settings can be adjusted NOTE The Energy Saver option is turned on by default in the Cotton Normal cycle Turn off the Energy Saver option for a faster Normal cycle which begins with heated drying To turn the Energy Saver default off press and hold the Wrinkle Care button for three seconds ON or OFF appears in the di...

Page 17: ...ermostat 4 LED Lamp Schematic If the lamp is turned on by connecting is normal It is not measured by multimeter because V is 3 2V th Measure resistance of the following terminal 1 Door open Terminal COM NC 1 3 Terminal COM NO 1 2 2 Door closed Terminal COM NC 1 3 Terminal COM NO 1 2 ...

Page 18: ...18 15 ...

Page 19: ...19 16 Ω Ω Electric type 15 Inlet valve Measure resistance of the Following terminal Left picture plate ...

Page 20: ... 6 Contact On Off by Centrifugal Switch STOP MODE When Motor does not operate RUN MODE Motor operates When checking components turn the power off and discharge voltage NOTE Centrifugal switch Centrifugal switch Pull Drive forward 17 ...

Page 21: ...21 7 WIRING DIAGRAM 18 ELECTRIC DRYER GAS DRYER ...

Page 22: ...22 Main PCB Picture Electric Gas 19 ...

Page 23: ...moving the dryer r make sure the steam feeder is empty Best results are obtained with cotton poly blend fabrics IMPORTANT NOTES ABOUT STEAM CYCLES 20 STEAM DEFAULT TIME TEMP CONTROL DRY LEVEL FABRIC STATE FABRIC TYPE MAXIMUM AMOUNT STEAM SANITARY 39 minutes Dry Comforter Bedding Single 1 each Children s clothing 3 lbs STEAM FRESH 20 minutes Dry Comforter Single 1 each Shirts 5 each REDUCE STATIC 1...

Page 24: ...24 21 ...

Page 25: ...25 22 ...

Page 26: ...26 Electric Dryer Symptom Check Point 1 Not heating 1 Check Electric Wiring 2 Check the motor operation 3 Voltage of the Main PWB 4 Check Heater element s Resistance 24 ...

Page 27: ...27 Electric Dryer Table 1 Resistance for Thermistor Temperature 25 ...

Page 28: ...are Heating 208 240Vac Stop 0 Troubleshooting for inadequate End user must use correct outlet or have outlet repaired by electrician Defective main PCB Unplug UNIT Check heater elements Terminal 1 COM 2 10Ω Terminal 1 COM 3 10Ω Terminal 2 3 20Ω Unplug UNIT Test thermostats Hi limit Open at 257 9 125 5 Close at 221 9 94 7 5Ω Safety Open at 284 41 140 5 Close at 31 35 5Ω Defective Thermostat If Safe...

Page 29: ...NWG ă 4GUKUVCPEG XCNWG ヱ Ć 6JGTOQUVCV K NKOKV GCUWTG TGUKUVCPEG QH VGTOKPCN VQ VGTOKPCN 1RGP CV ș Ș NQUG CV ș Ș 4GUKUVCPEG XCNWG ă 4GUKUVCPEG XCNWG ヱ Ć 6JGTOQUVCV 5CHGV GCUWTG TGUKUVCPEG QH VGTOKPCN VQ VGTOKPCN 1RGP CV ș Ș NQUG CPWCN TGUGV 4GUKUVCPEG XCNWG ă 4GUKUVCPEG XCNWG ヱ Ć QQT UYKVEJ GCUWTG TGUKUVCPEG QH VJG HQNNQYKPI VGTOKPCN QQT UYKVEJ MPQD QRGP 6GTOKPCN 1 0 6GTOKPCN 1 01 QQT UYKVEJ RWUJ E...

Page 30: ...H WHUPLQDO 5HVLVWDQFH YDOXH NȖa NȖ 9DOYH 0HDVXUH UHVLVWDQFH RI IROORZLQJ WHUPL QDO 9DOYH WHUPLQDO 5HVLVWDQFH YDOXH NȖa NȖ 7KHUPLVWRU KHFN LI UHVLVWDQFH LV LQ WKH UDQJH RI 7DEOH ZKHQ PHDVXULQJ UHVLVWDQFH EH WZHHQ WHUPLQDOV DIWHU VHSDUDWLQJ KDUQHVV IURP WKHUPLVWRU DVVHPEO FRQQHFWRU 5HIHU WR 7DEOH Table 1 Resistance for Thermistor Temperature KT 6 2 Ș 4 5 ƃ KT 6 2 Ș 4 5 ƃ KT 6 2 Ș 4 5 ƃ Ȕ Ȕ Ȕ Ȕ Ȕ Ȕ Ȕ...

Page 31: ... valve Valve1 terminal 1 5kΩ 2 5kΩ Valve2 terminal 1 5kΩ 2 5kΩ Unplug UNIT Check Igniter Resistance value 50 800Ω Unplug UNIT Open at 370ȕ Maximum Ą Close at 320ȕ ヴ 1Ω Unplug UNIT Test thermostats Hi limit Open at 203 41ȕ 95 5Ȕ Ą Close at 158 41ȕ 70 5Ȕ ヴ 5Ω Safety Open at 230 41ȕ 110 5Ȕ Ą Close Manual reset Retest heating circuit Defective gas valve Defective Igniter Defective Flame detector Defec...

Page 32: ...T QRGP 4GUKUVCPEG XCNWG ヱ Ć GXGT RWUJ NQUG 4GUKUVCPEG XCNWG ă 1WVNGV 6JGTOQUVCV GCUWTG TGUKUVCPEG QH VGTOKPCN VQ VGTOKPCN 1RGP CV ș Ș NQUG 0QV TGEQXGT 4GUKUVCPEG XCNWG ă 4GUKUVCPEG XCNWG ヱ Ć QVQT GCUWTG TGUKUVCPEG QH VGTOKPCN VQ VGTOKPCN CKP QOOQP 5WD QOOQP CKPĚ9JKVG 5WD TQYP QOOQP NWG 4GUKUVCPEG XCNWG Ć CV ș 4GUKUVCPEG XCNWG Ć CV ș QQT UYKVEJ jvt uv uj GCUWTG TGUKUVCPEG QH VJG HQNNQYKPI VGTOKPCN ...

Page 33: ...s can also cause fire This function alerts you to the need of cleaning the duct When the alarm about Duct clogging is displayed clean the duct or call a servicer to clean them The FlowSenseTM display consists of LED lamp The display has only two possible displays as only two possible displays as shown here Also see the figure shown below No Response LED turned on 9 1 Flow Sensor 1 2 Flow Sensor Fu...

Page 34: ...al and Temp buttons and then press the Power button On models with a glass touch control panel press the Power button then IMMEDIATELY press and hold the Temp and Signal buttons This button sequence activates the installation test The code will display if the activation is successful 3 Press the START PAUSE button The dryer will start the test which will last a few minutes The heat will be turned ...

Page 35: ...ired or rerouted 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 ru...

Page 36: ...36 10 DIAGNOSTIC TEST 35 T ...

Page 37: ...t breaker YES NO Check if power cord is properly connected Reconnect the controller Replace controIler Check if the controller wire is disconnected Check if terminal block and power cord are connected Check Plug Does power cord N Naturall line match to terminal center N Natural line 1 YES NO 2 L Black L Red N White BK or WH BL2 Check if the voltage measured between connector BK or WH Black Wire li...

Page 38: ...n harness wire and tap relay Black housing black tap relay Check the matching color between harness wire and tap relay White housing white tap relay White Low Extra Low Low Extra Low on on on on on O O O O on off off Temperature control below 68 Turn on heater 1 and heater 2 Temperature control below 52 4 4 Turn on only heater 1 Temperature control below 70 4 Turn on burner Temperature control bel...

Page 39: ... Power Off Wire 1 Black and white housing ྙ ྚ CROSS Items Case Heater 1 Operation black Heater 2 operation White PCB condition Of operation CAUTION Improper connection of the heater can damage the heater or the main board H CAUTION Connector Housing Black Check the matching color between harness wire and tap relay Black housing black tap relay Color Table 2 Connection of Tap Relay with PCB ASSEMBL...

Page 40: ...ntroller 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 NO NO YES YES Table 1 Resistance for Thermistor Temperature Air TEMP F 50 F 10 60 F 16 80 F 21 70 F 27 Air...

Page 41: ...ontroller connector 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 3 between connector BL2 White wire and WH4 Yellow wire Measure while door is closed Is resistance below 3 between connector WH4 Yellow wire and WH4 Brown wire Is resistance below 1 between terminals of outlet thermos...

Page 42: ...ons the number displayed should be between 30 and 255 The numbers should start decreasing as the control senses the moisture in your skin 7 After you have observed the number decreasing remove your fingers from the sensor bars The numbers will continue to decrease for a few seconds minimum 30 and the begin to increase maximum 255 8 If this test fails proceed with the MECHANICAL TEST below Test 4 t...

Page 43: ...ed with the MECHANICAL TEST below If the error displays and light comes on the door switch is working properly Test 5 k Gz G isY X Z Y o X Z Y NO NO NO YES YES YES WH4 Disconnect the WH1 and BL3 connector from the main PCB Measure the resistance between the NA6 GN pin and a chassis ground screw Is the resistance 1 Disconnect the BL2 and WH4 connector from the main PCB Measure the resistance betwee...

Page 44: ...y connector Is the resistance 18 22 Measure the resistance between YL3 WH and the YL wire on the white tab relay connector Is the resistance 18 22 Measure the resistance between the BL wire on the black tab relay and the YL wire on the white tab relay connectors Is the resistance 36 44 Measure the resistance between terminals 1 RD and the heater housing Is the resistance 1 Refer to the hi limit th...

Page 45: ...V DC 10 sec after igniter off When measuring terminal resistance on valve 1 and valve 2 valves are more than1 5 2 5 k Measure after off If valve 1 and valve 2 read less than 10 V DC are the valves off Harness check Controller change Check thermostat hi limit safety Check Igniter and frame detect Check gas connection or gas supply Change valve Change valve YES YES YES YES YES NO NO NO NO NO NO Valv...

Page 46: ...st E5 error occurs Turn the dryer s power off then measure resistance After activating the diagnostic test press the START PAUSE button 4 times Is AD value displayed higher than 10 Note Let the dryer start each test step Before continuing to the next If you press the button in rapid fire succession you could damage the main board YES NO Replace the DC pump Normal condition see page 26 for diagnost...

Page 47: ...47 mm for Propane Gas Replacement Label Instruction Sheet NCU PCK Remove 2 screws Disassemble the pipe assembly Replace natural gas orifice with propane gas orifice Opened Closed Full open Adjustment screw Close Adjustment screw Orifice Initially j G G G G G G G G G G G V G UGj G G G G G G G Warning The burner is set for natural gas at the factory The propane orifice conversion kit is sold as a se...

Page 48: ...CLOSE hs lGX pnup ly hs lGY mshtl kl lj OPEN nhzG hs lGz y j yl h Gz GAS VALVE FLOW START KEY PUSH DRYING VALVE 1 ON VALVE 2 OFF VALVE 2 ON IGNITER ON FLAME DETECT OPEN IGNITER TEMPERATURE ABOUT GAS IGNITION FLAME DETECT CLOSE VALVE 2 OFF uv uv lz lz 47 ...

Page 49: ...rical supply Protect your hands and arms from sharp edges when working To reduce the risk of Injury to persons adhere to all industry recommended safety procedures including the use of long sleeved gloves and safety glasses WARNING THE DRYER TOP PLATE IS VERY LARGE AND HEAVY Fallure to follow instructions can result in damage to the dryer property damage or Injury to persons 1 Remove 2 screws on t...

Page 50: ...PCB assembly display 5 Disassemble the control panel assembly WARNING When you disassemble the control panel be sure to disconnect the dryer from its electrical supply Protect your hands and arms from sharp edges when working To reduce the risk of Injury to persons adhere to all industry recommended safety procedures including the use of long sleeved gloves and safety glasses 50 ...

Page 51: ...of door switch WARNING When you disassemble the door switch connector be sure to disconnect the dryer from its electrical supply Protect your hands and arms from sharp edges when working To reduce the risk of Injury to persons adhere to all industry recommended safety procedures including the use of long sleeved gloves and safety glasses 51 PANEL FRAME 1 Remove 2 screws on the panel frame and then...

Page 52: ...ply Protect your hands and arms from sharp edges when working To reduce the risk of Injury to persons adhere to all industry recommended safety procedures including the use of long sleeved gloves and safety glasses the front bulkhead the front bulkhead TUB DRUM FRONT DRUM ASSEMBLY CHANGING THE DRUM LAMP 54 ...

Page 53: ...ngthisexhaustinstallation besure to disconnectthedryerfromitselectricalsupply Protectyour handsandarmsfromsharpedgeswhenworkinginsidethe cabinet Toreducethe riskofInjurytopersonsadhere to all industryrecommendedsafetyproceduresincludingtheuse of longsleevedglovesandsafetyglasses Note 55 ...

Page 54: ...move the cabinet cover and front bulkhead 3 Remove the drum assembly 4 Remove 2 screws and cover Air guide 5 Remove the bolt and washer 1 Open the top plate 2 Remove the cover cabinet and front bulkhead 3 Remove the drum assembly 4 Remove 7 screws 5 Pull the rear bulkhead towards the front 6 Remove the blower wheel Left hand thread 7 Disconnect the motor clamp and motor 56 ...

Page 55: ...Remove the cover guide 2 Remove 2 screws 3 Remove the air duct 1 Disassemble the top plate 2 Remove the cover cabinet and front bulkhead 3 Remove the drum assembly and front bulkhead 4 Disconnect the air duct from the front bulkhead 5 Remove the rollers from the front bulkhead and rear bulkhead 57 ...

Page 56: ... Press and hold the release ring to remove the hose from the nozzle 2 Remove the 7 screws from the rear cover 3 Lift the rear tub off the support and pull it out 4 Replace the hose and assemble the cable tie holder in the rear tub ...

Page 57: ...5 Remove the hose in generator 6 Remove the cable tie holder in the rear tub 7 Replace the hose and assemble the cable tie holder in the rear tub 8 After connection the hose to the generator install the clamp ...

Page 58: ... the thermistor screw from the generator 3 Remove the steam harness cable tie holder in the rear tub 4 Replace the steam harness and assemble the cable tie holder in the rear tub 5 Assemble the steam harness 6 Attach the thermistor and the screws to the generator ...

Page 59: ...ver and screws 2 To remove the rear tub take off the steam generator first Then remove the rear tub 5 Assemble the cover and screws 3 Remove the bracket from the steam generator 4 Reassemble the steam generator and bracket ...

Page 60: ...60 13 EXPLODED VIEW 13 1 Control Panel and Plate Assembly A210 A211 A120 A140 A110 58 ...

Page 61: ...61 13 2 1 Cabinet and Door Assembly Electric Type A560 A570 A530 A525 A540 A520 A600 A800 A610 A400 A420 A430 A495 A390 A130 A330 A310 A450 A460 A410 A590 A131 A305 A700 A320 A325 A300 A308 A500 60 K730 ...

Page 62: ...62 13 2 2 Cabinet and Door Assembly Gas Type A390 A530 A525 A540 A520 A800 A600 A500 A131 A550 A400 A420 A430 A330 A320 A310 A450 A460 A410 A305 A325 A300 A308 A590 A700 A130 K730 A495 ...

Page 63: ...0 K350 K240 F110 F120 K210 K540 K510 K520 K251 K360 K251 K252 K530 K600 K650 K640 K560 K620 K310 K140 K250 K330 K320 K550 K610 K651 K340 K515 K655 K660 K336 K335 K507 K505 K509 K502 K720 K411 K410 F200 K400 K740 K742 K743 K741 K221 K230 F150 K145 K250 K252 F130 F140 ...

Page 64: ...0 K210 K540 K510 K520 K251 K360 K251 K250 K530 K600 K650 M141 M110 M250 M190 M181 M150 M240 K640 K660 K560 K620 K140 K250 K550 K610 K651 M210 M180 K340 K515 K655 K320 K310 K330 K335 K336 K507 K505 K509 K502 K720 K411 K410 F200 K400 K740 K742 K743 K741 K221 K230 M260 K142 K252 K252 M220 M230 ...

Page 65: ...65 MAY 2018 PRINTED IN KOREA P No MFL69290420 ...

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