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LG DLE7177WM Service Manual
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LG DLE7177WM Service Manual

Electric & gas dryer
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See also: Owner's Manual , Training Manual
SERVICE MANUAL
CAUTION
MODEL : DLE8377WM/DLG8388WM
DLE8377NM/DLG8388NM
DLE7177WM/DLG7188WM

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Summary of Contents for LG DLE7177WM

  • Page 1 SERVICE MANUAL CAUTION MODEL : DLE8377WM/DLG8388WM DLE8377NM/DLG8388NM DLE7177WM/DLG7188WM...

  • 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. RECONNECT ALL GROUNDING DEVICES WHAT TO DO IF YOU SMELL GAS: Do not try to light a match, or cigarette, or turn on Immediately call your gas supplier from a neighbor’s any gas or electrical appliance.

  • Page 4: Table Of Contents

    CONTENTS 1. SPECIFICATIONS ........................4 2. FEATURES AND BENEFITS ....................6 3. INSTALLATION INSTRUCTIONS ................... 6 4. DRYER CYCLE PROCESS ..................... 13 5. COMPONENT TESTING INFORMATION ................14 6. MOTOR DIAGRAM AND SCHEMATIC..................17 7. CONTROL LAYOUT ......................18 8. WIRING DIAGRAM ......................19 9. DIAGNOSTIC TEST ......................20 9-1.

  • Page 5: Specifications

    SPECIFICATIONS Please refer to the rating label regarding detailed information. Specifications are subject to change by manufacturer. I ACCESSORIES See page 6 See page 7 See page 8...

  • Page 7: Features And Benefits

    FEATURES AND BENEFITS SENSOR DRY 0:20 EST. TIME REMAINING NORMAL NORMAL MEDIUM HIGH INSTALLATION INSTRUCTIONS Dryer Rack Installation Instructions Open the door.
  • Page 8 Stacking Kit Installation Instructions WARNING Do not attempt this alone! Stacking kit...
  • Page 9 Pedestal Installation Instructions NOTE : NOTE : NOTE:...
  • Page 10 Electric Dryer Only 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 11 3-wire connection : Direct wire Option 1: 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 4-...
  • Page 12 Option 3: Optional 3-wire Option 2: 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 13: Gas Requirements

    3-2. Connect Gas Supply Pipe (Gas Dryer ONLY) Gas Requirements. 1 New Stainless Steel Flexible Connector - Use 4 Black Iron Pipe only if allowed by local codes (Use Design Shorter than 20’ (6.1 m) - Use 3/8” pipe A.G.A. Certified Connector) Longer than 20’...

  • Page 14: Dryer Cycle Process

    DRYER CYCLE PROCESS Default Conditions of operation and termination Drying Cooling Wrinkle care Cycle Temp- Display erature time Electro- Temp- Default Temp- Level Time sensor Control time Control** Sensor Dry * Manual Dry ** Motor Load Heater...

  • 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...
  • Page 16 Component Test Procedure Check result Remark...
  • Page 17 Component Test Procedure Check result Remark...

  • Page 18: Motor Diagram And Schematic

    MOTOR DIAGRAM AND SCHEMATIC When checking Component, be sure to turn Power off, then do voltage discharge sufficiently. NOTE Centrifugal switch Centrifugal switch (Pull Drive forward)

  • Page 19: Control Layout

    CONTROL LAY - OUT PWB ASSEMBLY DISPLAY LAYOUT OPTION PART MODEL P/No DISPLAY DP 1 DP 3 OP 5 ELETRIC PWB ASSEMBLY LAYOUT MODEL MICOM P/No "a" RLY200 “b”x5 “c” TRANS...

  • Page 20: Wiring Diagram

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

  • Page 21: 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 22: Test 1 120V Ac Electrical Supply

    Test 1 120V AC Electrical supply Caution Trouble Symptom Measurement Condition...

  • Page 23: Power Connection

    Caution Trouble Symptom Measurement Condition 1.Power Connection < Table1 > : Connection of the Tab Relay with Heater (Elec) Tab Relay 1 Tab Relay 2 Heater 1 Heater 2 Remark Tab Relay 1 Tab Relay 2 < Table 2 > : Connection of the Tab Relay with Burner (Gas) Tab Relay 1 Burner Remark...
  • Page 24 < Table 2 > : Connection of Tab Relay with PCB ASSEMBLY (Gas) Remark Color Harness Connector Housing Tap relay 1 3. Status Mode Of wrong Connection < Table1 > : Wrong Connection of the Tab Relay and Connector Housing (Elec) Heater1 Heater2 PCB condition...

  • Page 25: Test 2 Thermistor Test

    Test 2 Thermistor Test --- Measure with Power Off Caution Trouble Symptom Measurement Condition Air TEMP. RES. Air TEMP. RES. Air TEMP. RES.

  • Page 26: Test 3 Motor Test

    Test 3 Motor test Caution Trouble Symptom Measurement Condition...

  • Page 27: Test 4 Moisture Sensor

    Test 4 Moisture sensor Caution Trouble Symptom Measurement Condition Display Value Voltage (DC) (between 6 Pin terminal Remark...

  • Page 28: Test 5 Door Switch Test

    Test 5 Door switch test Caution Trouble Symptom Measurement Condition...
  • Page 29 Test 6 Heater switch test - Electric Type Caution Trouble Symptom Measurement Condition...
  • Page 30 Test 7 GAS Valve test - Gas Type Caution Trouble Symptom Measurement Condition...

  • Page 31: Test 8 Semi-Conductor

    Test 8 Semi Conductor Caution Trouble Symptom Measurement Condition...

  • Page 32: 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 STEP 1 : VALVE SETTING Closed Opened Full open Close STEP 2 : ORIFICE CHANGE Shape...
  • Page 33 GAS VALVE FLOW START KEY PUSH VALVE 1 ON (VALVE 2 OFF) IGNITER ON IGNITER TEMPERATURE ABOUT 370°F FLAME DETECT OPEN IGNITER OFF VALVE 2 ON GAS IGNITION FLAME DETECT CLOSE DRYING VALVE 2 OFF GAS IGNITION GAS VALVE STRUCTURE Adjustment Screw VALVE 1 IGNITER...

  • Page 34: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS ✽ Disassemble and repair the unit only after pulling out power plug from the outlet. TOP PLATE WARNING ! When you disassemble the top plate, be sure to take gloves and careful plate’s edge. Failure to do so can cause serious injury.
  • Page 35 CONTROL PANEL ASSEMBLY WARNING ! When you disassemble the control panel, be sure to take gloves and careful panel frame’s edge. Failure to do so can cause serious injury. Remove 2 screws on the control panel frame. Disconnect the connectors. Pull the control panel assembly upward and then forward.
  • Page 36 COVER CABINET WARNING ! When you disassemble the door switch connector, be sure to take gloves and careful cabinet edge. Failure to do so can cause serious injury. Disassemble the top plate. Disassemble the control panel assembly. Disassemble the door assembly. Remove 2 screws.

  • Page 37: Drum Assembly

    TUB DRUM [FRONT] WARNING ! When you disassemble the lamp connector, be sure to take gloves and careful cabinet edge. Failure to do so can cause serious injury. Disassemble the top plate. Remove Cover Cabinet. Disconnect the door lamp and electrode sensor connector.
  • Page 38 DRYER EXHAUST CHANGE WARNING ! When you disassemble and install ventilation, be sure to take gloves and careful exhaust edge. Failure to do so can cause serious injury. Remove a screw and the exhaust duct. 2-1. Detach and remove a knockout at the botton, left or right side as desired.

  • Page 41: Exploded View

    EXPLODED VIEW...
  • Page 43 12-3-1. Drum & Motor Assembly: Electric Type F200 K400 K120 K140 K100 K130 K250 K251 K310 K330 K320 K340 K222 K221 K620 K230 K210 K250 K350 K360 K610 K550 K560 K251 K570 K240 K530 K640 K651 F140 K510 K520 K540 F130 K650 F110...

  • Page 44: Drum & Motor Assembly: Gas Type

    12-3-2. Drum & Motor Assembly: Gas type F200 K400 K120 K140 K100 K130 K250 K251 K310 K330 K320 K340 K222 K221 K620 K230 K210 K250 K350 K360 K610 K550 K560 K251 K570 K240 K530 K640 K651 K510 K520 K540 M141 M150 M240 M220...

  • Page 45: Replacement Parts List

    REPLACEMENT PARTS LIST ¡Æ...
  • Page 46 ¡Æ...

This manual is also suitable for:

D7188wmDle8377wmDlg8388wmDle8377nmDlg8388nmDlg7188wm

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