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LG W3S1 Series Service Manual

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LAUNDARY CENTER
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
MODELS : W3S1*
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 © 2019 - 2021 LG Electronics Inc. All rights reserved. Only training and service purposes.
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Summary of Contents for LG W3S1 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 injury to persons, 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

    CONTENTS 1. SPECIFICATIONS ..................................... 4 2. FEATURES & TECHNICAL EXPLANATION ............................ 5 2-1. Features ...................................... 5 2-2. Neuro Fuzzy Washing Time Optimization (Washer) ........................6 2-3. Water Level Control ..................................6 2-4. Door Control....................................6 3. PARTS IDENTIFICATION ................................. 8 4.

  • Page 4: Specifications

    1. SPECIFICATIONS Model W3S1CVK2* Name LAUNDARY CENTER WASHER : 120V, 60Hz, 11A Power supply DRYER(ELEC) : 120/240V, 60Hz, 26A, 22.5lb / 120/208V, 60Hz, 23A, 22.5lbx DRYER(GAS) : 120V, 60Hz, 13A, 22.5lb 27 in (W) X 30 ⅜ in (D) X 74 ⅜ in (H), 55 in (D with door open) Size 70 cm (W) x 77 cm (D) x 189 cm (H), 139.6 cm (D with door open) - Washer : 4.5 cu.ft.

  • Page 5: Features & Technical Explanation

    2. FEATURES & TECHNICAL EXPLANATION 2-1. Features ■ Ultra Capacity The larger drum enables not just higher head drop and stronger centrifugal force, but also less tangling and wrinkling of the laundry. Heavier loads, such as king size comforters, blankets, and curtains, can be washed. ■...

  • Page 6: Neuro Fuzzy Washing Time Optimization (Washer)

    2-2. Neuro Fuzzy Washing Time Optimization (Washer) To get the best washing performance, optimal time is determined by the water temperature, the selected washing temperature, and the size of the load. water temperature washing time selected the best NEURO washing rinsing time washing FUZZY...
  • Page 7 ■ The Washer Door Can Not Be Opened ● While the machine is in operation. ● After a power failure, and the machine has been unplugged during operation. ● While the Door Lock light is on. ● While the motor is rotating, even though the operation may be paused. ■...

  • Page 8: Parts Identification

    3. PARTS IDENTIFICATION ■ Parts ❶ Control Panel ❶ Power Cord(for Dryer gas models) ❷ Lint Filter ❷ Terminal Block Access Panel(for electric models) ❸ Dryer Drum ❸ Cold Water Inlet (for Dryer System) ❹ Dryer Door ❹ Exhaust Duct Outlet ❺...
  • Page 9 US: www.lg.com/us NOTE • Contact LG Customer Service at 1-800-243-0000 (1-888-542-2623 in Canada) if any accessories are missing. • For your safety and for extended product life, use only authorized components. The manufacturer is not responsible for product malfunction or accidents caused by the use of separately purchased unauthorized components or parts.

  • Page 10: Installation & Test

    4. INSTALLATION & TEST 1 Before servicing, ask the customer what the trouble is. 2 When installing or repairing the washer, put on long gloves and safety glasses. 3 Check the setup (power supply is 120 VAC, remove the transit bolts, level the appliance, etc.) 4 Check with the troubleshooting guide.
  • Page 11 ■ HOW TO CONNECT THE WASHER INLET HOSE • Verify that the rubber washer is inside of the valve connector. • Tighten the inlet hose securely to prevent leaks. Install the inlet hose to correct temperature water tap. • Otherwise, it cause drips on the drawer panel handle and drawer panel.
  • Page 12 TEST OPERATION (WASHER) ■ Preparation for Press the POWER button. Press and hold the START/ washing. PAUSE button NOTE • Start/Pause button will operate when you press and hold 1second, • Connect the power plug to the not touch. outlet. •...

  • Page 13: Operation

    5. OPERATION 5-1. Control Panel Features #W3S1CVK2*  WASHER  DRYER - 13 -...

  • Page 14: Cycle Guide(Washer)

    5-2. Cycle Guide(Washer) Turn the knob or press the button to select the desired cycle. When you select a wash cycle, the light for the corresponding wash cycle will turn on. NOTE • Whenever load weights are mentioned, assume 1 lb (0.45 kg) = 1 thick bath towel (dry). •...
  • Page 15 Use a smartphone to download a specialized cycle to this cycle position. Description • The default cycle is Rinse+Spin. This cycle is also available for download. • Refer to the LG ThinQ application to see the cycles available for download. Wash Temp. Default: Warm...
  • Page 16 Cycle Steam Turbo Wash™ Extra Rinse Pre-wash ● ● Delicates ● ● ● Heavy Duty ●† ● ● Speed Wash Downloaded ● default: Rinse+Spin - 16 -...

  • Page 17: 5-3.Cycle Guide (Dryer)

    5-3.Cycle Guide (Dryer) The appliance automatically sets the dryness level and temperature at the recommended setting for each cycle. The estimated time remaining will be shown in the display. • Temperature: Low > Medium Low > Medium > Medium High > High •...
  • Page 18 Use a smartphone to download a specialized cycle to this cycle position. Description • The default cycle is Perm. Press. This cycle is also available for download. • Refer to the LG ThinQ application to see the cycles available for download. Temp. Default: Medium...

  • Page 19: Special Functions

    5-4. Special Functions The option buttons also activate special functions, including Wi-Fi, Remote, Control Lock, Sanitary, Tub Clean, Signal, and Drum Light. Press and hold the option button marked with the special function for 3 seconds to activate. Wi-Fi Use this option for connecting to the internet through your home Wi-Fi network. Remote Use a smart phone to control your appliance remotely Also, it is possible to monitor your cycle operation so you know how much time is left in the cycle.

  • Page 20: Test Mode

    6. TEST MODE 6-1. Safety Caution  There can be live AC and DC voltage on some terminals on the main board, even when the machine is turned off. Be cautious to avoid electric shock when disconnecting parts while troubleshooting. (Wear Static Discharge gloves when working.)  After cutting off the power when changing the PWB disconnecting, or reassembling.

  • Page 21: Diagnostic Test (Dryer)

    6-4. Diagnostic Test (Dryer) 1. This TEST should be used for Factory test/Service test. Do not use this DIAGOSTIC 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.(Do not press the door switch to operate the heater while the door is open)  ACTIVATING THE DIAGNOSTIC TEST MODE 1.
  • Page 22  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. Display (LCD or LED) off. Measurement Condition Dryer power on, collector plugged in. •...
  • Page 23 Caution When measuring power, be sure to wear insulated gloves to avoid an electric shock. Trouble Symptom No power was applied to controller. Display (LCD or LED) off. Measurement Dryer power on, collector plugged in. Condition 1. Power Connection < Table1 > : Connection of the Tap Relay with Heater (Electric) Tab Relay 1 Tab Relay 2 Heater 1...
  • Page 24 < Table 2 > : Connection of Tap Relay with PCB ASSEMBLY (Gas) Color Harness Remark Blue Wire Check the matching color between Connector Housing Black harness wire and tap relay. (Black housing – black tap relay) Black Wire 3. Status Mode Of Wrong Connection <...
  • Page 25  Test 2 Thermistor Test Measure with Power Off Before measuring resistance, be sure to turn the power off and discharge voltage. Caution (When discharging, contact the metal plug of power cord with the ground.) ① During diagnostic test, tE1 and tE2, an error occurs. Trouble Symptom ②...
  • Page 26  Test 3 Motor Test Before measuring resistance, be sure to turn the power off and discharge voltage. Caution (When discharging, contact the metal plug of power cord with the ground.) Trouble Symptom Drum dose not rotate; no blower function, no heater function. Measurement Turn the dryer’s power off, then measure resistance.
  • Page 27  Test 4 Moisture Sensor NOTE: This test has two parts. The best test of the moisture sensing system is done in the diagnostic mode. This FUNCTIONAL TEST will test the sensor bars, wiring harness and PCB operation. If the results of this test are normal, the sensor system and PCB response are normal.
  • Page 28  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 29  Test 6 Heater Switch Test - Electric Type Before measuring resistance, be sure to turn the power off and discharge voltage. Caution (When discharging, contact the metal plug of power cord with the ground.) Trouble Symptom While operating, Heating will not work. Drying time takes longer. Measurement After turning the power off, measure the resistance.
  • Page 30  Test 7 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 With dryer power on Condition Power on &...
  • Page 31  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 the ground wire.) Trouble Symptom During the diagnostic test, E5 error occurs. Measurement Turn the dryer’s power off, then measure resistance.

  • Page 32: Installation Test (Duct Check)

    6-5. Installation Test (Duct Check) Once you have completed the installation of the dryer, Press the START/PAUSE button. use this test to make sure the condition of the exhaust The dryer will start the test, which will last a system is adequate for proper operation of the dryer. few minutes.

  • Page 33: Troubleshooting

    7. TROUBLESHOOTING 7-1. Safety Caution ■ There can be live AC and DC voltage on terminals on the main board, even when the machine is turned off. Be cautious to avoid electric shock when disconnecting parts while troubleshooting. (Wear Electro Static Discharge gloves when working.) ■...
  • Page 34 ERROR SYMPTOM CAUSE • The connector (3-pin, male, white) in the MOTOR HARNESS is not connected to the connector (3-pin, female, white) of STATOR ASEEMBLY. LOCKED MOTOR • The electric con tact between the connectors (3-pin, ERROR male, white) in the MOTOR HARNESS and 4-pin, female, white connector in the MAIN PWB ASEEMBLY is bad or unstable.
  • Page 35 DRYER ■ DISPLAY Checking Part Cause Remark Thermistor of blower • tE1 error is displayed in the drying • Outlet thermistor open shorted. houing cycle or test mode. Thermistor of blower • tE2 error is displayed in the drying • Outlet thermistor open shorted. houing cycle or test mode.

  • Page 36: Troubleshooting With Error (Washer)

    7-3. Troubleshooting With Error (Washer) CAUTION • Be careful of electric shock and short circuit between parts when measuring output for fault diagnosis. • When diagnosing faults, check the terminal coupling and wiring of each part first. • About 220V is applied when each terminal is energized (excluding the sensor department). •...
  • Page 37 When the fabric softener is not injected Refer to when water is not Is your water supply working? supplied Refer to the drawing and Is the water supply valve correctly connected to the wire and connect it correctly. hose? (Refer to the run-off diagram of the MCS app) Did you put the fabric softener into the fabric Inserting correctly as softener box?
  • Page 38 When it's not heated even though it's water supply Is the number below 246 when the “Soil” Soil Pre-wash and “Pre-wash” buttons are pressed at *Drum Light Connector re-connection *Control Lock the same time when operating? and poor contact repair When the "Spin"...
  • Page 39 When it's not heated even though it's water supply Motor tightening bolt Has the motor engagement bolt been Tighten the motor bolts loosened? completely. Replace Stator/Rotor Can the motor hear a friction tone? Assembly When is displayed Does the Latch,Hook spring work? Change Door Assembly Is the connected white four pin connector on the Door Switch Assembly...

  • Page 40: Troubleshooting Else (Washer)

    7-4. Troubleshooting Else (Washer) CAUTION 1. Be careful of electric shock if disconnecting parts while troubleshooting. 2. First of all, check the connection of each electrical terminal with the wiring diagram. 3. If you replace the MAIN PWB ASSEMBLY, reinsert the connectors correctly. NO POWER Is LED on while the power is Replace the...
  • Page 41 BUTTON DOESN’T WORK Are the connectors to Reconnect the MAIN board and or Repair the DISPLAY board damaged connector. or broken? Is the display PCB Replace the broken? (check the buzer DISPLAY PWB sound and LED light while ASSEMBLY. push the button.) - 43 -...
  • Page 42 VIBRATION & NOISE IN SPIN Put an unbalance part (rubber) inside of drum and start QC test mode and run in high spin. Have all the transit bolts Remove the (Refer to section 6-2, and base packing been transit bolts 20p.) When the machine removed? and base...
  • Page 43 DETERGENT DOES NOT FLOW IN Refer to Is water supplied? NO WATER SUPPLY. Are receptacles correctly Check the connected to the terminals wiring. of the INLET VALVE ASSEMBLY? Has detergent been put in the Put the correct compartment of the detergent in dispenser? the correct...
  • Page 44 ABNORMAL SOUND LIQUID DETERGENT/SOFTENER/ BLEACH DOES NOT FLOW IN Refer to Is the motor bolt loosened? Is water supplied? Secure the NO WATER bolt. SUPPLY. Are the plugs correctly Check the connected to the terminals wiring on the of the INLET VALVE dispenser.

  • Page 45: Troubleshooting Else (Dryer)

    7-4. Troubleshooting Else (Dryer) Symptom Check Point 1. Not heating 1.Check Electric Wiring. 2.Check the motor operation. 3.Voltage of the Main PWB. 4. Check Heater element’s Resistance. <Electric Dryer> Component Picture Test Point Value Main PWB Measure volage of connector to connector ①...
  • Page 46 <Electric Dryer> Component Picture Test Point Value Check if resistance is in the range of Table 1 when measuring resistance between terminals Thermistor Refer to Table 1 after separating harness from thermistor assembly connector. Table 1. Resistance for Thermistor Temperature. Air TEMP.
  • Page 47 Not heating (Electric) Unplug UNIT / Check heater Check lint Filter One or both elements. Heater elements ① Terminal: 1(COM) – 2 = 10 Ω defective. Clean if needed. Explain ② Terminal: 1(COM) – 3 = 10 Ω to owner responsibility to ③...
  • Page 48 <Gas Dryer> Component Picture Test Point Value Measure volage of connector to connector ① Voltage value = Main PWB ① Igniting 120Vac Tab relay (B) ④ -YL3 ① ② Stop ② Voltage value = 0 Resistance value = Igniter Measure resistance of the following terminal 50~800 Ω...
  • Page 49 <Gas Dryer> Component Picture Test Point Value Measure volage of connector to Main PWB connector ① Voltage value ≒ 90Vdc BL3 ① -BL3 ② ① Valve On ② Voltage value ≒ 102Vdc BL3 ① -BL3 ③ ② Valve Off Measure resistance of the following ①...
  • Page 50 Not heating (Gas) Unplug UNIT / Check gas valve Defective gas ① Valve1 terminal > valve Check lint Filter Clean if needed. 1.5kΩ~2.5kΩ Explain to owner responsibility ② Valve2 terminal > to and safety reason. 1.5kΩ~2.5kΩ Unplug UNIT / Check Igniter Defective Igniter Resistance value = 50~800Ω...
  • Page 51 Symptom Check Point 2. Not tumbling 1. Check Electric Wiring. 2. Check the Door properly closed. 3. Voltage of the Main PWB. 4. Check Blower thermostat’s Resistance <Electric / Gas Dryer> Component Picture Test Point Value Main PWB Measure volage of connector to connector ①...

  • Page 52: Troubleshooting Not Drying (Dryer)

    7-5. Troubleshooting Not Drying (Dryer) Not Drying Does an error code occur during installation check? Not Heating Adjust heater Is there foreign Long time to dry material inside the blower? Does the Energy saver Flor sense lighting mode default on? symptom or d ** Does the error code occur? Remove foreign...
  • Page 53 Part 1. Does an error code occur during installation check Note 2. Press the START/PAUSE button. The Dryer should be cool before starting this test. The dryer will start the test, which will last about 2 Please run the AIR DRY cycle for a few minutes to minutes.
  • Page 54 Part 2. Does the energy saver default on? Note 1. How to default off ‘Energy saver’? In case of Energy Star model, When customer select Cotton / Normal cycle, “Energy Saver” option will be If it has ‘Default On/Off’ on Energy selected automatically.
  • Page 55 Part 3. Is the product tilted backward and installed? Note 1. How to level the Laundary Center? The unit must be leveled for proper drying. This is to allow for proper air flow. Use hand or an adjustable wrench to turn the leveling Also, if the unit is not level, the clothing will not come in feet.
  • Page 56 Part 4. Using a drying sheet? Note It is not recommended to use dryer sheets (fabric softener sheets) in LG dryers. This is because the chemicals in the sheets can collect on the humidity sensors inside the drum, preventing proper humidity sensing.
  • Page 57 Part 5. Using a small amount of load? Note Small load sizes will sometimes not dry completely prior to the dryer shutting off. This is because the items in the drum do not brush up against the sensors that are located at the front of the drum, for the unit to properly detect humidity levels in the machine.
  • Page 58 Part 6. Is the humidity sensor connected properly? FUNCTIONAL TEST (Control) 1. Enter the diagnostic mode. (See DIAGNOSTIC TEST MODE.) ■ Activating the diagnostic test 1) Unit must in standby(plugged in, display off) 2) Touch ‘Power’ and ‘Dry Level’ + ‘Reduce Static’ within one half second.
  • Page 59 Part 7. Check whether electrical equipment is abnormal or not.(Electric Dryer) Note Please check if all the c ompon e nts are working pro perl y. Component Test Procedure Check result Remark 1. Thermal cut off Measure resistance of terminal to If thermal fuse is open must •...
  • Page 60 Part 8. Check whether electrical equipment is abnormal or not.(Gas dryer) Note Please check if all the components are working properly. Component Test Procedure Check result Remark 1. Outlet Thermostat (Cut off) Measure resistance of terminal to • Blower housing terminal - Safety ①...
  • Page 61 Part 9. Flow sense lighting symptom or d ** Does the error code occur? Note During the test cycle, monitor the Flow Sense™ display on the control panel. If no bars are displayed, when the cycle ends, the exhaust system is adequate. If the exhaust system is severely restricted, the display will show four bars.
  • Page 62 Part 10. How to TS Error Code 1. nP Error (Only Elec type D ryer) 3. PS Error (Only Elec type D ryer) Not enough voltage from outlet (Lower than 240V) When Supplied 240V with PCB, LED displays “PS” and -.
  • Page 63 Part 11. Is the lint filter cleaned in the product? Note The lint filter should be cleaned after every load. If not, accumulation of lint on this filter will result in restricted air flow, which will increase dry times. In some instances, dry time can be increased dramatically.
  • Page 64 Part 12. Is there duct clogging? (Wall, Flap) Note b. Vent Hood Clogged (Exterior Home) If the venting is kinked or clogged, this will reduce air flow and increase dry times (or d** Error showed up). Check for kinks, tears or clogs in vents. If kinked, straighten out the duct.
  • Page 65 Part 13. Does the duct have a too long length or many elbows? Note Maximum If the dryer’ back side is too close to the wall and too Number of 90˚ length of 40inch Wall Cap Type long Vent / lots of elbows, there may be a Vent kinked or Elbows diameter rigdid breakage.
  • Page 66 Part 14. Is there any damage to the duct? Note If Vent kinked or broken, air flow is restricted and dryer can’t dry clothes → Call the propessional ductwork company. a. Vent Kinked b. Vent Breakage ※ Do not push the dryer back after installation. It cause vent kinked and breakage.
  • Page 67 Part 15. Using the recommended duct? Note Use only 4-inch (10.2 cm) rigid, semi-rigid or flexible metal ductwork inside the dryer cabinet and for venting outside - 69 -...
  • Page 68 Part 16. Is the heater connected properly? Note The heater may be detached due to impact during installation / delivery. Reassemble the heater into the Tub Rear - 70 -...
  • Page 69 Part 17. Is there foreign material inside the blower? Note If do not clean the filter frequently, or if operate the dryer with the filter not assembled, foreign matter can get into the blower. Clean the blower Asm and tub front. If necessary, clean the lint filter and guide assembly together.
  • Page 70 Part 18. Is the duct in the dryer connected properly? Note The Duct inside of thd dryer may be detached due to impact during installation / delivery. Reassemble the duct into the blower asm. - 72 -...
  • Page 71 Part 19. Reset the Dryer or Replace Main PCB Note If there are no problem with the dryer and even environment, but d80 error still showed up, please reset the dryer and try to default off ‘d80 error’ (If you need please replace Main PCB) If necessary default off ‘d80 error’...

  • Page 72: Troubleshooting For Flow Sensor Dryer

    7-6. Troubleshooting for flow sensor dryer • Check the Error Code before you call for service Error Code Possible Causes Solutions • Temperature sensor failure • or tE2 • Humidity Sensor failure. • • Electric dryer power cord is not •...

  • Page 73: Before Using The Tag On Function

    Internet service provider or refer to your wireless router manual. • Settings • LG ThinQ is not responsible for any network - Allows you to set various options on the connection problems or any faults, malfunctions, appliance and in the application.
  • Page 74 This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the Start a cycle from the LG ThinQ application on instructions, may cause harmful interference to your smartphone. radio communications. However, there is no...
  • Page 75 LG Electronics will also provide open source code to you on CD-ROM for a charge covering the cost of performing such distribution (such as the cost of...
  • Page 76 • Launch the LG ThinQ application and select the Smart Diagnosis feature in the menu. Follow the instructions provided in the LG ThinQ application. Using Audible Diagnosis to Diagnose Issues Follow the instructions below to use the audible diagnosis method.

  • Page 77: Component Testing Informat (Washer)

    8. COMPONENT TESTING INFORMAT (WASHER) When Resistance (Ohm) checking the Component, be sure to turn t he power CAUTION off, and do voltage discharge sufficiently. 8-1. Filter Assembly (Line Filter) Wiring Circuit in the MAIN PWB / Wiring Diagram diagram MAIN PWB ASSEMBLY FUSE...

  • Page 78: Door Lock Switch Assembly

    8-2. Door Lock Switch Assembly Wiring Circuit in the MAIN PWB / Wiring Diagram diagram MAIN PWB MICOM Relay Relay Common terminal of valve Door switch Function The door lock switch assembly consists of a heating PTC, a bimetal, a protection PTC, and a solenoid.
  • Page 79 Test points Result Test Points Result Remarks (2) to (4) 700-1500 Ω At 77°F (25°C) (3) to (4) 60-90 Ω At 77°F (25°C) (4) to (5) Infinity (2) to (4) 120 Vac Voltage Input - 81 -...

  • Page 80: Stator Assembly

    8-3. Stator Assembly Wiring Circuit in the MAIN PWB / Wiring Diagram diagram MAIN PWB MICOM RD4 RD Function The Direct Drive motor can be driven from stopped to maximum speed in infinite steps in either direction. There are 36 poles on the stator; 12 permanent magnets spaced around the rotor.

  • Page 81: Pump Motor Assembly

    8-4. Pump Motor Assembly Wiring Circuit in the MAIN PWB Wiring Diagram diagram Circulation Pump * Each circuits of loadsin wiring diagram are all same. Object Function Two pump motors are used to drain the tub Test points Result Drain Pump Test Points Result (1) to (2)

  • Page 82: Inlet Valve Assembly

    8-5. Inlet Valve Assembly Wiring Circuit in the MAIN PWB diagram Wiring Diagram GY OR BL Bleach Valve Valve Valve Function Depending on the cycle and water temperature, the controller will energize the hot or cold water valve solenoids to regulate the selected water temperature. Test points Remove the connector from the valve and check the resistance.

  • Page 83: Thermistor Assembly

    8-6. Thermistor Assembly Wiring Circuit in the MAIN PWB / Wiring Diagram diagram Function The thermistor (temperature sensor) is used to monitor water temperature in the tub or steam generator. Test points Wash Thermistor - 85 -...
  • Page 84 Result Wash Thermistor Test Points Result Remarks (tolerance ±5%) (1) to (2) 39.5 kΩ At 86°F (30°C) 26.1 kΩ At 104°F (40°C) 12.1 kΩ At 140°F (60°C) 8.5 kΩ At 158°F (70°C) 3.8 kΩ At 203°F (95°C) 2.8 kΩ At 221°F (105°C) - 86 -...

  • Page 85: Component Tesing Information (Dryer)

    8-7. Component Tesing Information (Dryer) When Checking the component, be sure to turn the power off, and do voltage CAUTION discharge sufficiently. Component Test Procedure Check result Remark 1. Thermal cut off Measure resistance of terminal to If thermal fuse is open must •...
  • Page 86 Component Test Procedure Check result Remark 7. Heater Measure resistance of the • Electric type following terminal ① Resistance value: 10Ω ① Terminal: 1 (COM) - 2 ② Terminal: 1 (COM) - 3 ② Resistance value: 10Ω ③ Terminal: 2 - 3 ③...
  • Page 87 Component Test Procedure Check result Remark 13. Outlet Thermostat Measure resistance of terminal to • Gas type (Auto reset) terminal • Gas funnel ① Resistance value ≒ ∞ ① Open at 203 ± 41˚F (95 ± 5˚C) ② Close at 159 ± 41˚F ②...

  • Page 88: Gas Setting

    9. GAS SETTING 9-1.Change Gas Setting (Natural Gas, Propane Gas) The burner is set for natural gas at the factory. The propane orifice conversion CAUTION kit is sold as a service part to authorizer servicers only. Part numbers are shown below.

  • Page 89: Gas Valve Flow

    9-2. Gas Valve Flow START KEY PUSH VALVE 1 ON (VALVE 2 OFF) IGNITER ON IGNITER TEMPERATURE ABOUT 2499˚F (1343˚C) FLAME DETECT OPEN IGNITER OFF 374˚C (190˚C) VALVE 2 ON GAS IGNITION FLAME DETECT CLOSE DRYING VALVE 2 OFF GAS IGNITION GAS VALVE STRUCTURE Adjustment Screw START...

  • Page 90: Disassembly Instructions (Washer)

    10. DISASSEMBLY INSTRUCTIONS (WASHER) [Control Panel] * Be sure to unplug the machine before disassembling (4) It can be removed by pulling the control panel and repairing the parts. forward. (1) Control Panel is located in the center of the product. (5) Disconnect the wire harnesses from the washer and dryer to the control panel.
  • Page 91 [Cabinet Cover] (1) Open the door and disassemble the gasket clamp * If the dryer is raised, loosen 2 more screws. with a tool. (7) Lean toward the front of the cabinet cover and remove the door switch. (2) Unscrew one screw from the filter cover. (3) Insert the (-) screwdriver on both sides of the filter cover and flip it.
  • Page 92 [Panel Frame] ※ Don’t need to Unstack to (4) Unscrew both side 2 screws. Dryer. Disassemble the cabinet cover ASM and Abefore proceeding. (1) Remove the cabinet cover and loosen the front screw. (5) Lift Up Panel frame. (2) Loosen 4 screws on backside bracket (6) Untighten 2 housings(red and white) and 4 cable ties.
  • Page 93 [Main PCB Assembly] ※ Don’t need to Unstack to (3) Remove the protective cover by pulling it forward. Dryer. Disassemble the cabinet cover ASM and Panel Frame before proceeding. (1) Unlock all three highlighted hooks. (4) Remove all housings and connectors. (2) Remove Harness and cable tie (5) Unlock the main PCB fixing guide and push it In the direction of the arrow .
  • Page 94 [Pressure Switch / Noise Filter] ※ Don’t need to Unstack to Noise Filter Dryer. Disassemble the (1) Disassemble both connectors from the noise filter. cabinet cover ASM and Panel Frame before proceeding. Noise Filter Pressure Switch Inlet Valve Dispenser Pressure Switch (2) Unlock the locked site.
  • Page 95 [Door Assembly] [Door Lock Switch] (1) Open the door. (1) Separate Door Gasket using a tool (2) Loosen 2 screws (2) Unscrew 2 screws of the hinge. (3) Lift the door up and remove it. - 97 -...
  • Page 96 [Pump] Pump (1) Disassemble the cabinet cover. (2) Separate the pump hose , the bellows assembly from the pump assembly. (3) Unscrew the 2 screws and disassemble the pump assembly follow red arrow direction. - 98 -...
  • Page 97 [Motor / Damper] (1) Disassemble the back cover. (1) Use a 10 mm socket wrench to remove the 3 bolts on (2) Remove the bolt. the stator. (2) Unplug the 1 connectors from the stator. (3) Pull out the rotor. (3) Disassemble the damper hinges from the tub and base.
  • Page 98 [Unstack] (1) Remove Control Panel (3) Two or more people lift up the dryer. (2) Remove 6 screws on the rear bracket. (4) Shift down on the ground. - 100 -...
  • Page 99 [Dispenser Assembly] (5) Remove the connector connected to the valve. Noise Filter Pressure Switch Inlet Valve Dispenser ※ Disassemble the Dryer before proceeding. (6) Unscrew one screw on the back of the product and push the valve in the direction of the arrow. (1) After opening the drawer, press the arrow push button and pull.

  • Page 100: Disassembly Instructions (Dryer)

    10. DISASSEMBLY INSTRUCTIONS (DRYER) [Cabinet Cover Assembly] * The dryer can be SVC with the product (3) Loosen the 2 screws shown above. STACK. Top Plate (1) Disassemble the control panel. (4) Loosen the 2 screws marked on the front. (2) Use the ladder to climb up, disassemble the 7 screws of the dryer TOP PLATE.
  • Page 101 (4) Push the two hooks displayed from bottom to top. (5) Remove the cabinet cover after pulling and removing the door switch harness. (6) Remove the Cabinet Cover by pulling it in the direction of the arrow. - 103 -...
  • Page 102 [Lower Frame] (1) Remove the 2 screws assembled with the side (3) Push the Dryer to backward. cabinet with a screwdriver. (4) Lift the lower frame forward and remove it (2) Remove 4 screws in Bracket. - 104 -...
  • Page 103 [Panel Frame Assembly] (1) Remove the 2 screws assembled with the Side Cabinet using a screwdriver. (2) Lift the panel frame upward and remove it. - 105 -...
  • Page 104 [Tub Front Assembly] (1) Remove 4 screws on the front of the tub front with a (3) Remove the 3 cable ties screwdriver. (4) Remove the tub front assembly by lifting it up. (2) Seperate housings - 106 -...
  • Page 105 [Drum Assembly] [Air Duct] (1) Loosen belt from motor and idler pulleys. (1) Remove the Filter (2) Remove 2 screws. (3) Remove the air duct. (2) Carefully remove the drum. - 107 -...
  • Page 106 [Filter Assembly] (4) Disconnect the electrode sensor. ④ (1) Remove the filter. (2) Remove 3 screws. (3) Remove the cover grid. ③ ① ② - 108 -...
  • Page 107 [Replacing the Inlet Hose] (1) Press and hold the release ring to remove the hose from the nozzle. (2) Remove the 7 screws from the rear cover. (3) Lift the rear tub off the support and pull it out. (4) Replace the hose, and assemble the cable tie holder in the rear tub. - 109 -...
  • Page 108 (5) Remove the hose in generator. (6) Remove the cable tie holder in the rear tub. (7) Replace the hose, and assemble the cable tie holder in the rear tub. (8) After connection the hose to the generator, install the clamp. - 110 -...
  • Page 109 [Generator] (1) Remove the six connectors from the generator. (2) Remove the thermistor screw from the generator. (3) Remove the steam harness cable tie holder in the rear tub. (4) Replace the steam harness and assemble the cable tie holder in the rear tub. (5) Assemble the steam harness.
  • Page 110 [Generator Bracket] (1) Remove the cover and screws. (2) To remove the rear tub, take off the steam generator first. Then remove the rear tub. (3) Remove the bracket from the steam generator. (4) Reassemble the steam generator and bracket. (5) Assemble the cover and screws.
  • Page 111 [Burner ASM] (2) Loosen the screw on the back. ※ After loosen the drum, disassemble the burner ASM. (3) When disassembling the Burner ASM, the hook is caught, so turn it out. (1) Remove the cover and screws. (4) Disassemble the housing. - 113 -...

  • Page 112: Exploded View

    #EV# EXPLODED VIEW FULL ASSEMBLY (WASHER & DRYER) DRYER F112 Control Panel F210 WASHER F1100 F113...
  • Page 113 #EV# EXPLODED VIEW - DRYER A590 A800 E130 E390 A560 A210 A610 A330 E300 A600 K730 A500 A320 A336 E310 E430 E162 A400 E420 A700 A460 E410 E450...
  • Page 114 EXPLODED VIEW - DRYER A590 A800 A350 E130 E390 A210 A330 E300 A600 K730 A550 A336 A500 A320 E310 E162 E430 A700 A400 E420 A460 E410 E450...
  • Page 115 #EV# EXPLODED VIEW - DRYER K740 K400 K507 K509 K120 K502 K505 K141 K410 F200 K140 K411 K100 K720 K250 P130 K252 K251 K310 K320 K330 K221 K340 K620 K210 K250 K360 K350 K610 K560 K550 K251 K252 K336 K335 K240 K530 F150...
  • Page 116 EXPLODED VIEW - DRYER K740 K400 F200 K507 K743 K509 K502 K505 K741 K120 K141 K410 K140 K720 K411 K100 P130 K252 K250 K251 K320 K310 K330 K335 K221 K340 K620 K336 K210 K250 E360 K350 K610 K560 K550 K251 K252 K240 K530...
  • Page 117 #EV# EXPLODED VIEW - WASHER A485 A455 A450 A105 A106 A102 A104 A410 A150 A101 A390 A100 A130 A430 A307 A134 A155 A133 A440 A300 A310 A201 A220 A200 A303...
  • Page 118 #EV# EXPLODED VIEW - WASHER K143 K123 K200 K360 F1400 K6100 K361 K611 K4110 K3100 K4100 F315 K464 K461 F463 K516 K190 A157 K135 A158 K501 K572 K3200 K1000 K130 F102 F464 520K F468 F468 550K 540K F145 K3400...
  • Page 119 #EV# EXPLODED VIEW - WASHER F322 F324 F462 F321 F300 F170 F160 F227 F226 F430 F220 F225 F1200 F432...

  • Page 120: Wiring Diagram

    12. WIRING DIAGRAM * Wiring diagram is located at the bottom of the back of the washer’s cabinet cover (Beside the cap cover hole) WASHER - 122 -...
  • Page 121 ELECTRIC DRYER GAS DRYER - 123 -...
  • Page 122 ELECTRIC DRYER GAS DRYER - 124 -...
  • Page 124 P/No. MFL68588942...

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