LG DLEX3250 Series Service Manual
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LG DLEX3250 Series Service Manual

Electric & gas dryer
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ELECTRIC & GAS DRYER
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFUL LY IN ORDER TO
PROPER LY DIAGNOSE PROBLEMS AND TO SAFELY
PROVIDE QUALITY SE RVICE ON THESE DRYERS.
MODEL : Electri c
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.
Copyright ©
2014-2017
LG Electronics Inc. All rights reserved. Only training and service purposes.
U.S.A. Website: http://us.lgservice.com
Canadian Website: http://lg.ca
DLEX3250*
1
CONFIDENTIAL
Gas
DLGX 3251*

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Summary of Contents for LG DLEX3250 Series

  • Page 1 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.
  • Page 2 IMPORTANT SAFETY NOTICE The information in this service guide is intended for use by individuals possessing skill and experience in electrical, electronic, and mechanical appliance repair. Any attempt to repair a major appliance may result in personal injury and property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.

  • Page 3: Table Of Contents

    13-2. PANEL DRAWER ASSEMBLY & GUIDE ASSEMBLY ..........51 13-3-1. CABINET & DOOR ASSEMBLY: ELECTRIC TYPE ..........52 13-4-1. DRUM and MOTOR ASSEMBLY: ELECTRIC TYPE ........... 53 Copyright © 2016 - 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 4: Specifications

    SPECIFICATIONS Name: Electric and Gas Dryer Power supply: Please refer to the rating label regarding detailed information. Size : 27 X 30 X 38.7 (inch) Dryer capacity: IEC 7.4 cu.ft. Weight: 136(lbs) Specifications are subject to change by manufacturer. ACCESSORIES Dryer rack (1 each) Stacking kit (1 each) Pedestal (1 each)
  • Page 5 REMARK ITEM DLEX3250* DLGX 3251* Color Blue White / Stainless Silver / Vintage Gold Material & Top Plate Porcelain Finish Door Trim Chromate POWER SUPP LY 120V/240V 60Hz (26A) 250W (4.5A) AC 120V MOTOR AC 240V (ELECTRIC MODEL) HEATER 5400W (22.5A) ELECTRICITY CONSUMPTION AC 120V...

  • Page 6: Features And Benefits

    FEATURES AND BENEFITS Cycle Selector Knob LED Display Power Button Start/Pause Dry Level Time Dry Temp. Button Button Button Control Button 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...
  • Page 7 Stacking Kit Installation Instructions To ensure safe and secure installation, please observe the instructions below. WARNING Secure the side bracket to the washer with a screw on the back of the bracket. Repeat Steps 2, 3, and 4 for the other side. Do not attempt this alone! At least two people are required to lift and position the dryer on top of a washing...
  • Page 8 Pedestal Installation Instructions The pedestal accessory includes: Place the dryer on the • • For dryer Drawer divider (1) Wrench (1) pedestal. Make sure • • the front and back feet Screws (18) † T-clips (4) †† are in the correct positions.
  • Page 9 3-1. Connecting Electric Dryers Review the following options to determine the appropriate electrical connection for your home: 4-wire receptacle 4-wire connection : Direct wire (NEMA type14-30R) Important :Grounding through the neutral conductor is prohibited for (1) new branch-circuit installations, (2) mobile homes, and (3) recreational vehicles, and Use the instructions under option 1 if your home (4) areas where local codes prohibit grounding through homehas a 4-wire receptacle (NEMA type 14-30R).
  • Page 10 3-wire connection : Direct wire : 4-wire connection with a Power supply cord. Important : Grounding through the neutral conductor is prohibited for (1) new branch-circuit installations, • lf your local codes or ordinances do not allow the (2) mobile homes, and (3) recreational vehicles, and use of a 3 wire connection, or you are installing (4) areas where local codes prohibit grounding through your dryer in a mobile home, you must use a...
  • Page 11 : Optional 3-wire : 3-Wire Connection with connection. a Power Supply Cord • If your local codes or ordinances do not allow the lf your local codes or ordinances permit the connection of a frame-grounding conductor to the connection of a frame-grounding conductor to the neutral wire, use the instructions under this neutral wire, use these instructions.
  • Page 12 Option 4: Lost terminal screw An extra terminal screw is offered NOTE whole front type dryer models. If you lost a screw, you can find another one in the owner’s manual assembly and use it. Spare Screw with manual...
  • Page 13 3-2 Connecting the gas supply 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 14: Dryer Cycle Process

    DRYER CYCLE PROCESS Default Conditions of operation and termination Drying Cooling Wrinkle care Cycle Temp- Display erature Level time Electro- Temp- Default Temp- Time sensor Control time Control** HIGH Steam Fresh 20min Saturation 66 4˚C 5min 45 ±5˚C MEDIUM Steam Saturation 39min 68±4˚C...

  • Page 15: Component Testing Information

    COMPONENT TESTING INFORMATION When checking the component, be sure to turn the power off, and do voltage discharge sufficiently. CAUTION Component Test Procedure Check result Remark 1. Thermal cut off Measure resistance of terminal If thermal fuse is open must •...
  • Page 16 Component Test Procedure Check result Remark 7. Heater Measure resistance of the • Electric type following terminal Terminal: 1 (COM) - 2 Resistance value: 10Ω Terminal: 1 (COM) - 3 Resistance value: 10Ω Terminal: 2 - 3 Resistance value: 20Ω 8.
  • Page 17 Component Test Procedure Check result Remark 13. Outlet Thermostat Measure resistance of terminal • Gas type (Auto reset) to terminal • Gas funnel Open at 203 ± 7°F (95 ± 5°C) Resistance value ≒ ∞ Continuity < 1Ω Close at 158 ± 9°F (70 ± 5°C) •...

  • Page 18: 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 STOP MODE RUN MODE (When Motor does not operate) (Motor operates) Centrifugal switch Centrifugal switch (Pull Drive forward)

  • Page 19: Wiring Diagram

    WIRING DIAGRAM ELECTRIC DRYER WIRING DIAGRAM GAS DRYER WIRING DIAGRAM...

  • Page 20: Steam Function

    STEAM FUNCTION 8-1. Steam Cycle Guide TEMP. FABRIC MAXIMUM DEFAULT TIME FABRIC TYPE STEAM CONTROL LEVEL STATE AMOUNT Comforter Single (1 each) STEAM Bedding STEAM SANITARY SANITARY (39 minutes) Children’s clothing 3 lbs. STEAM FRESH Comforter Single (1 each) (20 minutes) Shirts* 5 each 8 lbs.

  • Page 21: Troubleshooting For Steam Dryer

    8-2. Troubleshooting for Steam Dryer POSSIBLE CAUSES SOLUTIONS PROBLEM • Water supply error. • Check steam feeder drawer: (1) Make sure steam feeder is filled with water to MAX line. (2) Make sure steam feeder is seated properly and drawer is fully cloased. Indicator light is (3) Turn the dryer off then restart the steam cycle.

  • Page 22: Display Fault/Error Codes For Steam Dryer

    Cannot see steam • This is normal. • Steam is released at different stages of the cycle vapor at the for each option. beginning of cycle. The display shows • MORE TIME button • Pressing the MORE TIME button several times will BULKY LOAD.

  • Page 23: 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 cloths. Clogged vents can also cause fire. This function alerts you to the need of cleaning the duct. When the alarm about Duct clogging is on display of the panel, your duct vents should be cleaned by yourself or serviceman.

  • Page 24: Installation Check

    9-2 Installation Test (Duct Check) 4. Check the display for results. Once you have completed the installation of the dryer, During the test cycle, monitor the F LOW SENSE use this test to make sure the condition of the exhaust display on the control panel.

  • Page 25: Troubleshooting For Flow Sensor Dryer

    9-3 Troubleshooting for flow sensor dryer • Check the Error Code before you call for service Error Code Possible Causes Solutions or tE2 • Temperature sensor failure • • Humidity Sensor failure. • • Electric dryer power cord is not •...

  • Page 26: 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 27: Test 1 120V Ac Electrical Supply

    Test 1 120V AC Electrical supply When measuring power, be sure to wear insulated gloves to avoid an Caution electric shock. Trouble Symptom No power was applied to Controller. (LED,LCD Display off) Measurement With Dryer Power On; Connector linked to Controller. Condition •...
  • Page 28 Caution When measuring power, be sure to wear insulated gloves to avoid an electric shock. Trouble Symptom Check the Tab Relays Connection properly. Measurement Condition With Dryer Power On; Connector linked to Controller. 1. Power Connection < Table1 > : Connection of the tap relay with Heater (Electric) Tab Relay 1 Tab Relay 2 Heater 1 Heater 2...
  • Page 29 < Table 2 > : Connection of tap relay with PCB ASSEMBLY (Gas) Remark Color Harness Blue Wire Check the Matching color Between Harness wire and tap relay. Black Connector Housing (Black Housing – Black tap relay) Black Wire Connector Housing Tap relay 1 3.

  • Page 30: Test 2 Thermistor Test - Mezsure 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 31: 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 32: Test 4 Moisture Sensor

    Test 4 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 earth line.) Trouble Symptom Degree of dryness does not match with Dry Level. Measurement Condition Turn the Dryer’s Power Off, then measure resistance.

  • Page 33: Test 5 Door Switch Test

    Test 5 Door switch test NOTE: This test has two parts. The best test of the door switch system is done in the diagnostic mode. This FUNCTIONAL TEST will test the door switch, wiring harness and PCB operation. If the results of this test are normal, the door switch system and PCB response are normal.

  • Page 34: Test 6 Heater Switch Test - Electric Type

    Test 6 Heater switch test - Electric Type Enter diagnostic mode and • Check power press the START/PAUSE supply. button twice. Measure the voltage between YL3- 3 (WH) and the YL wire on the black tab relay. Is the voltage 240 VAC? Disconnect the YL3, black tab •...

  • Page 35: 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 36: Test 8 Semi-Conductor

    Test 8 Semi Conductor 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 Degree of Resistance is not in 300°æ30 Ω Measurement Condition Turn the Dryer’s Power Off, then measure resistance.

  • Page 37: Test 10 Generator Assembly

    Test 10 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 occurs.

  • Page 38: Change Gas Setting (Natural Gas, Propane Gas)

    CHANGE GAS SETTING (NATURAL GAS, PROPANE GAS) Changing orifices and gas valve adjustments improperly can result in an Warning explosion and/or fire. Conversion must be made by a qualified technician. Initially, The burner is set for natural gas at the factory. The propane orifice Natural Gas mode is set.
  • Page 39 GAS VALVE FLOW START KEY PUSH IGNITER ON IGNITER TEMPERATURE ABOUT FLAME DETECT OPEN VALVE 2 ON GAS IGNITION FLAME DETECT CLOSE DRYING VALVE 2 OFF GAS IGNITION GAS VALVE STRUCTURE Adjustment Screw START VALVE 1 IGNITER FLAME CLOSE OPEN DETECT VALVE 2 GAS IGNITION...

  • Page 40: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS Unplug the dryer before servicing. WARNING ! TOP PLATE When you disassemble the top plate, be sure to take gloves and handle the top plate carefully to avoid cuts. Failure to do this could lead to a serious injury. Remove 3 screws on the upper plate.
  • Page 41 PANEL DRAWER ASSEMBLY Pull out the drawer Lift out the steam feeder. Remove 2 screws on the control panel.
  • Page 42 WARNING ! CONTROL PANEL ASSEMBLY When you disassemble the control panel, be sure to take gloves and handle the frame and other parts carefully to avoid cuts. Failure to do this could lead to a serious injury. 1. Remove 2 screws on the control panel frame.
  • Page 43 WARNING ! COVER CABINET When you disassemble the door switch connector, be sure to take gloves and handle the frame and other parts carefully to avoid cuts. Failure to do this could lead to a serious injury. Disassemble the top plate. Disassemble the control panel assembly.
  • Page 44 GUIDE ASM 1. Remove 3 screws on the frame body. 2. Push the Guide assembly to the back side and then lift it. 3. Separate 2 hoses from the pump and generator. 4. Lift a pump and generator up.
  • Page 45 FRAME BODY & PANEL FRAME 1. Remove 3 screws on the frame body. and then disassemble the frame body. 2. Remove 4 screws on the panel Frame and then remove it.
  • Page 46 WARNING ! TUB DRUM [FRONT] When you disassemble the lamp connector, be sure to take gloves and handle the frame and other parts carefully to avoid cuts. Failure to do this could lead to a serious injury. 1. Open the top plate. 2.
  • Page 47 WARNING ! DRYER EXHAUST CHANGE Before performing this exhaust installation, be sure to disconnect the dryer from its electrical supply. Protect your hands and arms from sharp edges when working inside the cabinet. To reduce therisk of personal injury,adhere toall industry recommended safety procedures including the useof long sleeved gloves and safety glasses.
  • Page 48 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) assembly. Remove the Drum assembly. Remove 2 screws and cover (Air guide). Remove the bolt and washer.
  • Page 49 AIR DUCT Disassemble the top plate. Remove the Cover Cabinet. Remove the filter. Remove the Cover guide. Remove 2 screws. Remove the air duct. ROLLERS Disassemble the top plate. Remove the Cover Cabinet and Tub Drum (Front) assembly. Remove the Drum assembly and Tub Drum (Front) assembly. Disconnect the Air duct from the Tub Drum (Front) assembly.

  • Page 50: Exploded View

    EXPLODED VIEW 13-1-1. Control Panel & Plate Assembly ( Touch LCD type) A211 A210 ※ In case before April,2015 Production. If Part Assembly (AGM75370001) is replaced, - Main, PCB(A130) - Display, PCB(A120) have to be replaced all together. A130 A150 A120 A140 A110...

  • Page 51: Panel Drawer Assembly & Guide Assembly

    13-2. Panel Drawer Assembly & Guide Assembly K503 K508 K502 K506 K501 K505 K504 K507 A090 A172 A161 A160 A171 A170 A350...

  • Page 52: Cabinet & Door Assembly: Electric Type

    13-3-1. Cabinet & Door Assembly: Electric Type A590 A700 A800 A570 A390 A560 A610 A131 A600 A300 A330 A308 A500 A325 A320 A305 A530 A510 A310 A520 A525 A410 A430 A540 A400 A420 A450 A460...

  • Page 53: Drum And Motor Assembly: Electric Type

    13-4-1. Drum & Motor Assembly: Electric Type F200 K400 K420 K410 K120 K140 K100 K335 K130 K250 K251 K320 K310 K330 K222 K340 K221 K620 K224 K230 K210 K250 K336 K360 K350 K610 K560 K550 K251 K240 F150 K530 K640 K651 K515 K655...
  • Page 54 MAR 2017 PRINTED IN KOREA P/No.: MFL62119934...

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