LG DLE4870 Series Service Manual
Electric & gas dryer
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Also See for DLE4870 Series:
- Owner's manual (84 pages) ,
- Owner's manual (36 pages) ,
- Owner's manual (80 pages)
Table of Contents
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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 : DLE4870* DLG4871*
DLE4901* DLG4902*
DLE4970* DLG4971*
DLE5001* DLG5002*
DLE5070* DLG5071*
U.S.A. Website: http://us.lgservice.com
Canadian Website: http://lg.ca
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Table of Contents
Related Manuals for LG DLE4870 Series
Summary of Contents for LG DLE4870 Series
- 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 : DLE4870* DLG4871* DLE4901* DLG4902* DLE4970* DLG4971*...
- Page 2 OCT. 2012 PRINTED IN KOREA P/No.: MFL62119914...
- Page 3 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.
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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: 127.4 (Ibs) Specifications are subject to change by manufacturer. OPTIONAL ACCESSORIES Dryer rack (1 each) Not on all models... - Page 6 DLE4870* DLG4871* DLE4901* DLG4902* REMARK ITEM DLE4970* DLG4971* DLE5001* DLG5002* DLE5070* DLG5071* Color Blue White Material & Top Plate Powder coating 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) Motor...
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Page 7: Features And Benefits
FEATURES AND BENEFITS COTTON/NORMAL 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 3-1. Connecting Electric Dryers 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 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.
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Page 11: Dryer Cycle Process
DRYER CYCLE PROCESS Default Conditions of operation and termination Cooling Drying Wrinkle care Cycle Display Temp- Temp- time Electro- Default erature Temp- Level Time Control sensor time Control** 47 5 68 4 ANTIBACTE- Very 5min 70min Saturation HIGH °F RIAL °F Normal BULKY/... -
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- . 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 Measure resistance of terminal 8.
- Page 14 Component Test Procedure Check result Remark 13. Outlet Thermostat Measure resistance of terminal • Gas type (Auto reset) to terminal • Gas funnel Resistance value Open at 203 41°F (95 5°C Close at 159 41°F (70 5°C) Continuity < 1Ω •...
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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: Flow Sensor Function
FLOW SENSOR FUNCTION 8-1 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 18 8-2 Installation Test (Duct check) DLE5001 DLG5002 Once you have completed the installation of the dryer, During the three minute test cycle, monitor the use this test to make sure the condition of the exhaust Flow Sense™ display on the control panel. If no bars system is adequate for proper operation of the dryer.
- Page 19 DLE4870* DLG4871* 8-2 Installation Test (Duct check) DLE4901* DLG4902* DLE4970* DLG4971* DLE5070* DLG5071* Once you have completed the installation of the dryer, During the three minute test cycle, monitor the use this test to make sure the condition of the exhaust Flow Sense™...
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Page 20: Troubleshooting
8-3 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 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 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 23 Caution When measuring power, be sure to wear insulated gloves, to and 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 : Connection of the Tab Relay with Heater (Electric) Tab Relay 1 Tab Relay 2 Heater 1 Remark...
- Page 24 3. Incorrect Connection Error and Results. : Incorrect Connection of the Tab Relay and Connector Housing (Elec) Heater1 Heater2 PCB condition Items Case Of operation Operation(black) Operation(White) 1.Black and White Housing Wire CROSS Power Off 2.Black Housing Power Off Wire CROSS 3.White Housing Normal...
- Page 25 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.
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Page 26: 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 27: 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 28: 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 29 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 30 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 &...
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Page 31: 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.) Trouble Symptom During diagnostic test, E5 error occur. Measurement Condition Turn the dryer’s power off, then measure resistance. -
Page 32: 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 33 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...
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Page 34: 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 35 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 36 PANEL REAR [COMMON] Remove 3 screws remained on the panel rear. Lift out the panel rear. TOP COVER WARNING! when you press the holder, be careful scratch. For preventing the scratch, prepare the soft material. Remove 1 screw for lifting safety cover. After checking the safety cover, press the holder with flat-tip screw driver inside the top cover.
- Page 37 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 38 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 39 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 40 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 41 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 ].
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Page 42: Exploded View
EXPLODED VIEW 12-1. Control Panel and Plate Assembly A130 A150 A140 A120 A110 A215 A570 A211 A211 A210... -
Page 43: Cabinet And Door Assembly: Electric Type
12-2-1. Cabinet and Door Assembly: Electric Type A700 A800 A610 A212 A560 A212 ※ In case before September, 2013 Production. ·Locker Assembly : 4027EL2001A A320 A600 A311 A330 A550 A315 A500 A314 A510 A310 A131 ※ In case before September, 2013 Production. -
Page 44: Cabinet And Door Assembly: Gas Type
12-2-2. Cabinet and Door Assembly: Gas Type A800 A700 A212 A560 A212 ※ In case before September, 2013 Production. ·Locker Assembly : 4027EL2001A A320 A600 A311 A330 A550 A315 A314 A500 A510 A310 A131 ※ In case before September, 2013 Production. ·Locker, Hook : MFG62959101 A545 A520... -
Page 45: Drum And Motor Assembly: Electric Type
12-3-1. Drum and Motor Assembly: Electric Type F200 K400 K120 K100 K140 K130 K251 K250 K310 K336 K320 K340 K225 K335 K222 K330 K221 K224 K230 K360 K250 K210 K620 K550 K560 K610 K350 K251 K540 K240 K530 K510 K520 K660 F140 K655... -
Page 46: Drum And Motor Assembly: Gas Type
12-3-2. Drum and Motor Assembly: Gas Type F200 K400 K120 K100 K140 K130 K251 K250 K310 K340 K320 K336 K225 K335 K222 K330 K221 K224 K360 K230 K250 K210 K620 K550 K560 K610 K350 K251 K540 K240 K530 K510 K520 K660 K651 K655...