Table of Contents
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WASHING MACHINE
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
MODEL :WM3997H*A /01
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 © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
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Table of Contents
Troubleshooting
Related Manuals for LG WM3997H A /01 Series
Summary of Contents for LG WM3997H A /01 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 PRINTED IN KOREA MFL67307985...
- Page 3 CONTENTS LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
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Page 4: Door Frame
WM3997H*A /01 DOOR FRAME Chrome WARNING: Wash hands after handling LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. -
Page 5: Features & Technical Explanation
Internal heater helps to maintain water temperature at its optimum level for selected cycles. Child Lock The child lock prevents children from pressing any button to change the settings during operation. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. -
Page 6: Neuro Fuzzy Washing Time Optimization
If a power failure has occurred while in operation, the door will unlock after 5 minutes. Clicking sounds can be heard when the door is locked/unlocked. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. -
Page 7: Child Lock
This option features upgraded washing performance with low energy and water consumption. Do not load delicates such as wool, silk, and easily discolored clothes. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. -
Page 8: Parts Identification
3. PARTS IDENTIFICATION Accessories LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. -
Page 9: Installation And Test
Insert the 4 caps (provided) into the hole. Lower Higher Keeping Turn clockwise to raise; counterclockwise to lower. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. -
Page 10: Connect The Drain Hose
• Avoid connecting several electric devices, • Connect the power plug to the wall outlet. as doing so may cause a fire. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. - Page 11 • If SERVICE is needed during door is unlocking. check, remove the remaining water by pulling out the hose cap. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 12 LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 13 LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 14 Wash Temp. : Selects the water temperature for the wash cycle Spim Speed : Selects the spin speed Soil Level : Selects a wash cycle by soil level. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 15 LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
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Page 16: Test Mode
7. TEST MODE SPIN SPEED SOIL LEVEL WASH/RINSE DELAY WASH LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. -
Page 17: Troubleshooting
8. TROUBLESHOOTING LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. - Page 18 Displayed only when the START/PAUSE button is first pressed in the Load Test Mode. • e l i machine is working, the power is supplied rapidly. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
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Page 19: Fault Diagnosis And Troubleshooting
Replace the MAIN PWB Is wire of the DISPLAY PWB ASSEMBLY ASSEMBLY. broken? Replace DISPLAY PWB ASSEMBLY or repair wire. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. - Page 20 LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 21 10) If vibration and noise are reduced, press the Quick Cycle button to store (2 beep sounds). * If you want to return to factory default spin speed setting, repeat above steps except step 9). LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 22 110-120. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 23 Softener LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
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Page 24: Heating Without Water
HEATING WITHOUT WATER DRAIN MALFUNCTION LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. -
Page 25: Wash Heater Trouble
WASH HEATER TROUBLE HEATING CONTINUOUSLY ABOVE THE SETTING WATER TEMPERATURE LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. -
Page 26: Will Not Circulate Water
WILL NOT CIRCULATE WATER LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. -
Page 27: Spin Trouble
SPIN TROUBLE LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. - Page 28 Is there any foreign object in the condensing bellows. Disassemble the dry fan assembly and dry duct upper, and remove foreign objects in duct and fan. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 29 LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
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Page 30: Control Panel
CONTROL PANEL ASSEMBLY 7 Unscrew the 8 screws from the control panel DISPLAY PWB ASSEMBLY assembly. 8 Disassemble the display PWB assembly. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. - Page 31 Remove the protective cover. PROTECT COVER Disconnect the connectors. Unscrew 1 screw on the back. Remove the main PWB. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 32 LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 33 Open the door and disassemble the CLAMP ASSEMBLY. Unscrew the 2 screws. NOTE • Reconnect the connector after replacing the DOOR SWITCH ASSEMBLY. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 34 Unscrew the screw from the lower side of the cabinet cover. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 35 Lift and separate the cabinet cover. Disassemble the clamp assembly. Disassemble the gasket. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
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Page 36: Door Lock Switch Assembly
Open the door and remove the gasket using the special gasket pliers. Unscrew the 2 screws. NOTE • Reconnect the connector after replacing the door switch assembly. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. - Page 37 Disassemble the cabinet cover. Unplug the white connector from the thermistor. Pull it out by holding the bracket of the thermistor. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
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Page 38: Lamp Assembly
Unscrew 2 screws on the back of the top plate. TOP PLATE ASSEMBLY Pull the top plate backward and upward as shown. Disconnect the connector. Disassemble the lamp assembly. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. - Page 39 • If you pull the dampers apart, the must be replaced. If you do not separate them, they can be re-used. LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
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Page 40: Exploded View
A154 A101 A156 A141 A390 A153 A151 A100 A131 A130 A430 A140 A133 A440 A300 A310 A201 A220 A200 A303 LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. -
Page 41: Drum & Tub Assembly
F360 K135 K345 K344 K131 F365 K346 K349 F464 K520 K347 K550 F145 K340 F461 K105 K540 K348 F468 K342 LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. - Page 42 F300 F180 COLD (BLUE) HOT (ORANGE) F170 F160 F340 F227 F226 F329 F327 F225 F430 F220 F441 F120 F130 F432 LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 43 Dry Duct ASM M111 M110 M121 M100 M210 M235 M120 M240 K311 M130 M215 M101 M220 M312 K311 M310 M311 M230 LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.