This document is a service manual for an LG Laundry Center, model W3S1CVK2*. It provides detailed information for diagnosing and servicing the unit, including specifications, features, operation, test modes, troubleshooting, component testing, gas setting, disassembly instructions, exploded views, and wiring diagrams.
Function Description
The LG Laundry Center is a stacked washer and dryer unit designed for household laundry. It incorporates advanced technologies to optimize washing and drying performance, enhance user convenience, and ensure safety.
Washer Functions:
- Ultra Capacity: The washer drum is designed for large loads, accommodating items like king-size comforters and blankets, reducing tangling and wrinkling.
- Direct Drive System: Utilizes a brushless DC motor that directly drives the drum, eliminating the need for belts and pulleys, which contributes to quieter operation and fewer repairs.
- Tilted Drum and Extra Large Door Opening: The tilted drum and large door opening facilitate easier loading and unloading of clothes.
- Automatic Wash Load Detection: The washer automatically senses the load size and optimizes the washing time accordingly.
- Neuro Fuzzy Washing Time Optimization: Determines the optimal washing time based on water temperature, selected wash temperature, and load size for best performance.
- Water Level Control: A pressure sensor monitors the water level in the tub, stopping water supply at a preset level and ensuring proper drainage before spinning.
- Control Lock: Prevents unintended operation, especially by children, by disabling all buttons except the Power button. It can be activated during operation and remains engaged until the cycle ends or is manually disengaged.
- Smart Diagnosis™: Allows users to diagnose technical difficulties by transferring data to a smartphone, which can help identify problems and suggest solutions.
- Special Functions: Includes Wi-Fi connectivity for remote control, Sanitary cycle for high-temperature washing, Tub Clean for drum maintenance, Signal for end-of-cycle alerts, and Drum Light for interior illumination.
- Available Options: Steam, Turbo Wash™, Extra Rinse, and Pre-wash options are available for various cycles like Normal, Bedding, Delicates, Heavy Duty, and Speed Wash.
Dryer Functions:
- Flow Sensor (FlowSense™): Detects clogging or blocking in the dryer ducts, which can decrease drying efficiency and pose a fire hazard. It alerts users when duct cleaning is needed.
- Control Lock: Similar to the washer, it restricts unwanted users from operating the dryer.
- Smart Diagnosis™: Enables diagnosis of dryer issues through data transfer to a smartphone.
- Special Functions: Includes Wi-Fi for remote control, Remote for monitoring cycle operation, Reduce Static, and Drum Light.
- Cycle Guide: Offers various drying cycles such as Normal, Bedding, Delicates, Heavy Duty, and Small Load, with adjustable temperature and dryness levels.
- Available Options: Steam, Turbo Wash™, Extra Rinse, and Pre-wash options are available for various cycles.
Important Technical Specifications
Model: W3S1CVK2*
Name: Laundry Center
Power Supply:
- Washer: 120V, 60Hz, 11A
- Dryer (Electric): 120/240V, 60Hz, 26A, 22.5lb / 120/208V, 60Hz, 23A, 22.5lb
- Dryer (Gas): 120V, 60Hz, 13A, 22.5lb
Size:
- Overall: 27 in (W) x 30 ⅜ in (D) x 74 ⅜ in (H)
- Depth with door open: 55 in (D)
- Metric: 70 cm (W) x 77 cm (D) x 189 cm (H), 139.6 cm (D with door open)
Capacity:
- Washer: 4.5 cu.ft. (DOE)
- Dryer (Steam cycle): IEC 7.4 cu.ft. (8 lb/3.6 kg)
- Dryer (Normal cycle): IEC 7.4 cu.ft. (22.5 lb/10.2 kg)
Weight:
- Gas Model: 314.3 lb (142.6 kg) - 327.1 lb (148.4 kg)
- Electric Model: 311.6 lb (141.3 kg) - 323.7 lb (146.8 kg)
Thermistor Resistance (Dryer):
- 50°F (10°C): 18.0 KΩ
- 60°F (16°C): 14.2 KΩ
- 70°F (21°C): 11.7 KΩ
- 70°F (27°C): 9.3 KΩ
- 90°F (32°C): 7.7 KΩ
- 100°F (38°C): 6.2 KΩ
- 110°F (43°C): 5.2 KΩ
- 120°F (49°C): 4.3 KΩ
- 130°F (54°C): 2.9 KΩ
- 140°F (60°C): 3.0 KΩ
- 150°F (66°C): 2.5 KΩ
- 160°F (71°C): 2.2 KΩ
Thermistor Resistance (Washer):
- 86°F (30°C): 39.5 kΩ
- 104°F (40°C): 26.1 kΩ
- 140°F (60°C): 12.1 kΩ
- 158°F (70°C): 8.5 kΩ
- 203°F (95°C): 3.8 kΩ
- 221°F (105°C): 2.8 kΩ
Motor Resistance (Washer Stator): 5-15 Ω between any two terminals (1-2, 2-3, 3-1).
Pump Motor Resistance: 5-15 Ω (1-2).
Inlet Valve Resistance: 0.8-1.2 kΩ (1-2).
Door Lock Switch Assembly:
- (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)
Dryer Heater Resistance (Electric):
- Terminal 1(COM) - 2: 10Ω
- Terminal 1(COM) - 3: 10Ω
- Terminal 2 - 3: 20Ω
Dryer Gas Valve Resistance:
- Valve 1 terminal: 1.5k~2.5kΩ
- Valve 2 terminal: 1.5k~2.5kΩ
Dryer Igniter Resistance: 50-800Ω (for 5318EL3001).
Dryer Flame Detector Resistance: Open at 370°F (Maximum), <1Ω at 320°F.
Dryer Outlet Thermostat (Auto reset) Resistance: Open at 203 ± 41°F (95 ± 5°C), <1Ω at 159 ± 41°F (70 ± 5°C).
Dryer Outlet Thermostat (Manual reset) Resistance: Open at 230 ± 41°F (110 ± 5°C), <1Ω (Manual reset).
Usage Features
The Laundry Center offers a user-friendly control panel with various cycles and options for both washing and drying.
Washer Usage:
- Cycle Selection: Turn the knob or press the button to select cycles like Normal, Bedding, Delicates, Heavy Duty, Speed Wash, and Downloaded (Rinse + Spin).
- Temperature and Spin Settings: Adjust wash temperature (Cold, Cool, Warm, Very Warm, Hot) and spin speed (No Spin, Low, Medium, Medium High, High).
- Soil Level: Select soil levels (Light, Limited, Normal, Moderate, Heavy) for customized cleaning.
- Special Functions Activation: Press and hold specific option buttons for 3 seconds to activate Wi-Fi, Remote, Control Lock, Sanitary, Tub Clean, Signal, and Drum Light.
- Smart Diagnosis™: Press and hold Steam + Extra Rinse buttons for 3 seconds and hold a smartphone mouthpiece to the logo for data transfer.
Dryer Usage:
- Cycle Selection: Select cycles like Normal, Bedding, Delicates, Heavy Duty, Small Load, and Downloaded (Perm. Press).
- Temperature and Dry Level Settings: Adjust temperature (Low, Medium Low, Medium, Medium High, High) and dry level (Damp, Less, Normal, More, Very).
- Special Functions Activation: Press and hold specific option buttons for 3 seconds to activate Wi-Fi, Remote, Control Lock, Steam + Reduce Static, and Drum Light.
- FlowSense™: The display indicates duct clogging, prompting users to clean the duct.
- Installation Test (Duct Check): Activated by pressing and holding Signal and Temp. buttons, then Power, to check exhaust system adequacy.
Maintenance Features
The service manual outlines various maintenance and troubleshooting procedures to ensure the longevity and optimal performance of the Laundry Center.
General Maintenance:
- Safety Precautions: Always disconnect power before servicing and wear long-sleeved gloves and safety glasses. Be cautious of live AC and DC voltage on the main board.
- Grounding Devices: Ensure all grounding wires, screws, straps, clips, nuts, or washers are returned to their original position and properly fastened after service.
- Electrostatic Discharge (ESD) Protection: Use an anti-static wrist strap or touch a ground connection point before handling electronic control assemblies to prevent damage.
- Leveling: The appliance must be level for proper operation. Adjust leveling feet by turning clockwise to raise and counterclockwise to lower.
- Duct Cleaning: The FlowSense™ function alerts when ducts are clogged. Regular cleaning of dryer ducts is recommended (at least once a year) to maintain efficiency and prevent fire hazards.
- Lint Filter Cleaning: The lint filter should be cleaned after every load to prevent restricted airflow and increased drying times.
Troubleshooting and Testing:
- Test Modes: Specific test modes are available for both washer and dryer to diagnose various components and functions, such as load test mode, water level frequency check, and diagnostic tests for dryer components (motor, thermistor, heater, gas valve, door switch, moisture sensor).
- Error Codes: The manual provides a comprehensive list of error codes (e.g., tE1, tE2, dE, PS, EE, nC, nU, gAS for dryer; tE, uE, oE, FE, PE, dE1/dE2, LE, EE, PF, Sud for washer) with their symptoms, possible causes, and solutions.
- Component Testing: Detailed procedures for testing individual components like thermistors, heaters, motors, gas valves, door lock switches, and inlet valves are provided, including expected resistance values and voltage measurements.
- Wiring Diagrams: Comprehensive wiring diagrams are included for both electric and gas models to aid in electrical troubleshooting.
- Disassembly Instructions: Step-by-step instructions with illustrations are provided for disassembling various parts of both the washer and dryer, such as the control panel, cabinet cover, panel frame, main PCB, pressure switch/noise filter, door assembly, pump, motor/damper, drum assembly, air duct, filter assembly, inlet hose, generator, and burner assembly.
- Gas Setting: Instructions for changing gas settings (natural gas to propane gas) and gas valve flow diagrams are included for gas dryer models.
- Smart Diagnosis™: This feature helps identify and solve problems by transmitting troubleshooting data to a smartphone, reducing the need for service calls.
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