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LG DLEX5101W Service Manual

Electric & gas dryer
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ELECTRIC & GAS DRYER
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY IN ORDER TO
PROPERLY DIAGNOSE PROBLEMS AND TO SAFELY
PROVIDE QUALITY SERVICE ON THESE DRYERS.
MODEL : DLEX5101W
DLEX5101V
DLEX5170W
DLEX5170V
U.S.A. Website: http://us.lgservice.com
Canadian Website: http://lg.ca
DLGX5102W
DLGX5102V
DLGX5171W
DLGX5171V

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  Summary of Contents for LG DLEX5101W

  • Page 1 U.S.A. Website: http://us.lgservice.com Canadian Website: http://lg.ca ELECTRIC & GAS DRYER SERVICE MANUAL CAUTION READ THIS MANUAL CAREFULLY IN ORDER TO PROPERLY DIAGNOSE PROBLEMS AND TO SAFELY PROVIDE QUALITY SERVICE ON THESE DRYERS. MODEL : DLEX5101W DLGX5102W DLEX5101V DLGX5102V DLEX5170W DLGX5171W DLEX5170V DLGX5171V...
  • Page 2 OCT. 2009 PRINTED IN KOREA P/No.: MFL62119910...
  • Page 3: What To Do If You Smell Gas

    IMPORTANT SAFETY NOTICE WARNING ! To avoid personal injury, disconnect power before servicing this product. If electrical power is required for diagnosis or test purposes, disconnect the power immediately after performing the necessary checks. To reduce the risk of personal injury, adhere to all industry recommended safety procedures including the use of long sleeved gloves and safety glasses.
  • Page 4: Table Of Contents

    CONTENTS 1. SPECIFICATIONS ....................... 4 2. FEATURES AND BENEFITS ....................6 3. INSTALLATION INSTRUCTIONS ..................6 4. DRYER CYCLE PROCESS ....................10 5. COMPONENT TESTING INFORMATION ................. 11 6. MOTOR DIAGRAM AND SCHEMATIC ................14 7. WIRING DIAGRAM ......................15 8.
  • Page 5: Specifications

    SPECIFICATIONS Name: Electric and Gas Dryer Power supply: Refer to the rating label on the dryer. Gas: 120 VAC Electric: 240VAC Size: 27 X 28.9 X 45.3 (inch) Dryer capacity: IEC 7.3 cu.ft. Weight: 133.2 (Ibs) Specifications are subject to change by manufacturer. ACCESSORIES Dryer rack (1 each) See page 6 of this manual for usage instruction.
  • Page 6 DLEX5101W DLGX5102W DLEX5101V DLGX5102V REMARK ITEM DLEX5170W DLGX5171W DLEX5170V DLGX5171V Color Blue White / Stainless Silver Material & Powder coating Top Plate Finish Door Trim Spray 120 V / 240 V / 60 Hz (26 A) Power Elec. 120 V / 208 V / 60 Hz (23 A) Supply 120 V / 60 Hz (11.5 A)
  • Page 7: Features And Benefits

    FEATURES AND BENEFITS INSTALLATION INSTRUCTIONS Dryer Rack Installation Instructions Open the door. Put the dryer rack into Check and be sure that the Hold the dryer rack the drum front of the rack is properly with both hands. seated behind the lint filter.
  • Page 8 Review the following options to determine Option 1: 4-wire connection with the appropriate electrical connection for a Power supply cord. your home: • If your local codes or ordinances do not allow the use of a 3 wire connection, or you are installing your dryer in a mobile home, you must use a 4- 4-wire receptacle wire connection.
  • Page 9 Option 2: 3-Wire Connection with a Power Supply Cord lf your local codes 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 Section 3: Optional 3-wire connection.
  • Page 10: Connect Gas Supply Pipe (Gas Dryer Only)

    3-2. Connect Gas Supply Pipe (Gas Dryer ONLY) For further assistance, refer to section on Gas Requirements. 1. Make certain your dryer is equipped for use with the 3. Connect to gas supply pipe using a new flexible type of gas in your laundry room. Dryer is equipped stainless steel connector.
  • Page 11: Dryer Cycle Process

    DRYER CYCLE PROCESS Default Conditions of operation and termination Cooling Wrinkle care Drying Cycle Display Temp- Temp- Default time Electro- Temp- erature Level Time Control sensor time Control** STEAM HIGH 66 4 47 5 20min Saturation 5min FRESH MEDIUM °F °F STEAM 68 4...
  • Page 12: Component Testing Information

    COMPONENT TESTING INFORMATION CAUTION When checking the Component, be sure to turn the power off, and do voltage discharge sufficiently. Component Test Procedure Check result Remark • Heater case- 1. Thermal cut off Measure resistance of terminal If thermal fuse is open must be replace Safety to terminal...
  • Page 13 Component Test Procedure Check result Remark 7. Heater Measure resistance of the • Electric type following terminal Resistance value: 10Ω Terminal: 1 (COM) - 2 Resistance value: 10Ω Terminal: 1 (COM) - 3 Resistance value: 20Ω Terminal: 2 - 3 8.
  • Page 14 Component Test Procedure Check result Remark 13. Outlet Thermostat Measure resistance of terminal • Gas type (Auto reset) to terminal • Gas funnel Open at 203 41°F (95 5°C Resistance value Close at 159 41°F (70 5°C) Continuity < 1Ω •...
  • Page 15: Motor Diagram And Schematic

    MOTOR DIAGRAM AND SCHEMATIC NOTE When checking Component, be sure to turn Power off, then do voltage discharge sufficiently. ■ Contact On / Off by Centrifugal Switch Terminal No Remark Mode Resistance Motor 2 ~ 3Ω Motor Heater (Electric Models) STOP Gas Valve (Gas Models) Motor...
  • Page 16: Wiring Diagram

    WIRING DIAGRAM Label all wires prior to disconnection when servicing controls. Wiring CAUTION errors can cause improper and dangrous operation. Verify proper operation after servicing. ELECTRIC DRYER WIRING DIAGRAM GAS DRYER WIRING DIAGRAM...
  • Page 17: Steam Function

    STEAM FUNCTION 8-1. Steam Cycle Guide TEMP. FABRIC MAXIMUM DEFAULT TIME STEAM FABRIC TYPE CONTROL LEVEL STATE AMOUNT Comforter Single (1 each) Bedding STEAMSANITARY 39 minutes Children’s clothing 3 lbs. Comforter Single (1 each) 20 minutes Shirts* 5 each 8 lbs. 10 minutes STEAMFRESH REDUCE...
  • Page 18: Troubleshooting

    8-2. Troubleshooting for Steam Dryer POSSIBLE CAUSES SOLUTIONS PROBLEM ADD WATER indicator • Water supply error. • Check steam feeder drawer: light is on during the (1) Make sure steam feeder is filled with water to drying cycle MAX line. (2) Make sure steam feeder is seated properly and drawer is fully closed.
  • Page 19: Display Fault/Error Codes

    POSSIBLE CAUSES SOLUTIONS PROBLEM • This is normal. • Steam is released at different stages of the cycle Cannot see steam for each option. vapor at the beginning of cycle. The display shows • MORE TIME button • Pressing the MORE TIME button several times will BULKY LOAD.
  • Page 20: Flow Sensor Function

    FLOW SENSOR FUNCTION 9-1 Flow sensor This FlowSense function detects the clogging or blocking of ducts. Clogged duct vents 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.
  • Page 21: Installation Check

    9-2 Installation check This feature allows you to quickly verify that the exhaust system is adequate for the normal function of the dryer. The check takes only two minutes. The results of the check are displayed in the FlowSense display window as shown below (Fig.
  • Page 22: Troubleshooting For Flow Sensor Dryer

    9-3 Troubleshooting for flow sensor dryer 1. FLOW SENSE indicator light is on Is lint filter full? Clean lint filter before every load Is duct clogged? Check & clean duct. 2. FLOW SENSE indicator light is on and does not disappear. 1.
  • Page 23: Diagnostic Test

    DIAGNOSTIC TEST 1. This TEST should be used for Factory test /Service test. Do not use this DIAGNOSTIC TEST other than specified. 2. Activating the Heater manually with the Door open may trip the Thermostat attached to the Heater, therefore do not activate it manually.
  • Page 24: Test 1 120 Vac Electrical Supply

    Test 1 120V AC Electrical Supply When measuring power, be sure to wear insulated gloves, to and avoid an Caution electric shock Trouble Symptom No power was applied to controller. (LED, LCD Display off) Measurement Condition With dryer power on; connector linked to controller. •...
  • Page 25: Power Connection

    Caution When measuring power, be sure to wear insulated gloves, to and avoid an electric shock. Check the Tab Relays Connection properly. Trouble Symptom Measurement Condition With dryer power on; connector linked to controller. 1. Power Connection : Connection of the Tab Relay with Heater (Electric) Tab Relay 1 Tab Relay 2 Heater 1 Remark...
  • Page 26 3. Incorrect Connection Error and Results. : Incorrect Connection of the Tab Relay and Connector Housing (Elec) PCB condition Heater1 Heater2 Items Case Operation(White) Of operation Operation(black) 1.Black and White Housing Wire CROSS Power Off Power Off 2.Black Housing Wire CROSS 3.White Housing Normal...
  • Page 27: Test 2 Thermistor Test - Measure With Power Off

    Test 2 Thermistor Test --- Measure with Power Off Before measuring resistance, be sure to turn power off, and do voltage discharge. Caution (When discharging, contact the metal plug of power cord with the ground.) During Diagnostic Test, tE1 and tE2 error occur. Trouble Symptom During operation, heater would not turn off, or remains on.
  • Page 28: Test 3 Motor Test

    Test 3 Motor Test Before measuring resistance, be sure to turn power off, and do voltage discharge. Caution (When discharging, contact the metal plug of power cord with earth line.) Trouble Symptom Drum will not rotate; no fan will function; no heater will work. Measurement Condition Turn the dryer’s power off, then measure resistance.
  • Page 29: Test 4 Moisture Sensor

    Test 4 Test 4 Moisture Sensor Moisture sensor Before measuring resistance, be sure to turn power off, and do voltage discharge. Caution (When discharging, contact the metal plug of power cord with ground line.) Trouble Symptom Degree of dryness does not match with dry Level. Measurement Condition Turn the dryer’s power off, then measure resistance.
  • Page 30: Test 5 Door Switch Test

    Test 5 Door Switch Test Before measuring resistance, be sure to turn power off, and do voltage discharge. Caution (When discharging, contact the metal plug of power cord with earth line.) Door opening is not sensed. (During operation, when opening door, drum motor and Trouble Symptom Heater run continuously) door close is not sensed.
  • Page 31: Test 6 Heater Switch Test - Electric Type

    Test 6 Heater Switch Test - Electric Type Before measuring resistance, be sure to turn power off, and do voltage discharge. Caution (When discharging, contact the metal plug of power cord with earth line.) While operating, heating will not work. Trouble Symptom Drying time takes longer.
  • Page 32: Test 7 Gas Valve Test - Gas Type

    Test 7 Test 7 GAS Valve Test - Gas Type GAS Valve test - Gas Type Caution When measuring power, be sure to wear insulated gloves, to avoid electric shock. While operating, heating will not work. Trouble Symptom Drying time takes longer Measurement Condition With dryer power on Power on &...
  • Page 33: Test 8 Motor Assembly, Dc, Pump

    Test 8 Motor Assembly, DC, Pump Before measuring resistance, be sure to turn power off, and do voltage discharge. Caution (When discharging, contact the metal plug of power cord with earth line.) During diagnostic test, E5 error occur. Trouble Symptom Turn the dryer’s power off, then measure resistance.
  • Page 34: Test 9 Generator Assembly

    Test 9 Generator Assembly Before measuring resistance, be sure to turn power off, and do voltage discharge. Caution (When discharging, contact the metal plug of power cord with earth line.) During Steam cycle, generator assembly is not heating. Trouble Symptom During diagnostic test, tE4 error occur.
  • Page 35: Change Gas Setting (Natural Gas, Propane Gas)

    CHANGE GAS SETTING The dryer must be used with the correct gas. If the dryer is converted to propane (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.
  • Page 36 AS VALVE FLOW START KEY PUSH ) F F I NITER ON I NITER TEMPERATURE ABOUT FLAME DETECT OPEN VALVE 2 ON AS I NITION FLAME DETECT CLOSE DRYIN VALVE 2 OFF AS I NITION AS VALVE STRUCTURE TART V ALVE 1 IGNITER FLAME CLO E...
  • Page 37: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS Disassemble and repair the unit only after pulling out power plug from the outlet. CONTROL PANEL ASSEMBLY Remove the 3 screws from the back panel. Place a towel over the top cover to prevent scratch to the surface. Gently lift each corner of the back panel, then roll it forward so it rests on top of the dryer.
  • Page 38 CONTROL PANEL Remove 8 screws from control panel assembly. Separate PCB from control panel. PANEL REAR [ELECTRIC] Remove 1 screw. Pull out the cover. Remove 3 screws. Disassemble terminal block and wire from panel rear.
  • Page 39: Top Cover

    PANEL REAR [COMMON] Remove one screw for removing safety cover. Remove 3 screws remained on the panel rear. Lift out the panel rear. TOP COVER WARNING! Before lifting the top cover, remove the safety cover. If you don’t remove the safety cover, it will be destroyed.
  • Page 40 TOP COVER [CLOSING] WARNING! When you close the top cover, drawer has to be inserted to the end. Otherwise drawer will be stuck in the guide. And it will be destroyed. Press the drawer to the end. Put the locker into CLOSE. Close the top cover.
  • Page 41: Guide Assembly

    FRAME BODY & LID Open the top cover. With a flat blade screwdriver, press the tabs on the side of frame body and gently take it out. Inside GUIDE ASSEMBLY Disconnect wiring to the harness. Remove 3 screws. Pull out the guide assembly.
  • Page 42 CABINET COVER Open the door and remove the 4 screws from the cabinet cover then close the door. Remove the 2 screws, then tilt the cabinet cover toward the front of dryer slightly. Disconnect wiring to the door switch and lift the cabinet cover.
  • Page 43: Drum Assembly

    WARNING! TUB DRUM [FRONT] WHEN YOU DISASSEMBLY THE LAMP CONNECCTOR, BE SURE TO TAKE GLOVES AND CAREFUL CABINET EDGE. FAILURE TO DO SO CAN CAUSE SERIOUS INJURY. Disassemble the top plate. Remove cabinet cover. Disconnect the door lamp and electrode sensor connector.
  • Page 44 WARNING! DRYER EXHAUST CHANGE BEFORE PERFORMING THIS EXHAUST INSTALLATION, BE SURE TO DISCONNECT THE DRYER FROM ITS ELECTRICAL SUPPLY. TO REDUCE THE RISK 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.
  • Page 45: Filter Assembly

    FILTER ASSEMBLY Remove the filter. Remove 3 screws. Remove the cover grid. Disconnect the electrode sensor. BLOWER HOUSING Disassemble the top plate. Remove the cabinet cover and tub drum [Front ]. Remove the drum assembly. Remove 2 screws and cover (Air guide). Remove the bolt and washer.
  • Page 46: Air Duct

    AIR DUCT Disassemble the top plate. Remove the cabinet cover . Remove the filter and 2 screws. Remove the air duct. ROLLERS Disassemble the top plate. Remove the cabinet cover and tub drum [Front ]. Remove the drum assembly and tub drum [Rear]. Disconnect the air duct from the tub drum [Front ].
  • Page 47: Exploded View

    EXPLODED VIEW 13-1. Control Panel & Plate Assembly A130 A150 A140 A120 A110 A215 A211 A211 A260 A265 A210 A255 A250...
  • Page 48: Guide Assembly

    13-2. Guide Assembly K503 K508 K502 K506 K501 K505 K504 K507 A090 A161 A171 A350 A170...
  • Page 49: Cabinet And Door Assembly: Electric Type

    13-3-2. Cabinet and Door Assembly: Gas Type A700 A800 A212 A590 A212 A320 A600 A311 A315 A330 A550 A500 A310 A131 A510 A520 A540 A545 A410 A440 A470 A475 A450 A430 A420 A400...
  • Page 50: Cabinet And Door Assembly: Gas Type

    13-4-2. Drum and Motor Assembly: Gas Type F200 K400 K420 K410 K120 K100 K140 K130 K251 K250 K310 K330 K320 K340 K225 K222 K221 K224 K360 K230 K250 K210 K620 K550 K560 K610 K350 K251 K540 K240 K530 K510 K520 K651 K655 K660...