Page 1 WM3988H*A WM3988H*A Universe Washing Machine...
Page 2 The Small Print Page The Small Print Page • Safety Notice • Caution • ESD Notice • Regulatory Information • Disclaimer • Compliance WM3988...
Page 3 Table of Contents Table of Contents Safety Notices Contents Specifications Warranty Features Controls WM3988...
Page 4 Specifications Specifications WM3988...
Page 5 Warranty Warranty WM3988...
Page 6 Features Features Ultra Capacity Direct Drive Tilted Drum / Large Door Steam Washing / SteamFresh™ Roller Jets and Balls Automatic Load Detection WM3988...
Page 7 Features Features Built-In Heater Child Lock WM3988...
Page 8 Controls Controls Power Button Turns the machine on or off. Cycle / Start Button Starts or pauses the machine. Delay Wash Button Sets the delay to have the washer run later. Display Window Shows the estimated remaining cycle time Option Buttons Enables various optional cycles when required.
Page 9 Fuzzy Logic Fuzzy Logic WM3988...
Page 10 Door Lock Door Lock The door cannot be opened: • When the WASHER is operating • When the power failed or the washer is unplugged (until the capacitor discharges and releases the lock) • When the DOOR LOCK light is on •...
Page 11 Door Lock Lamp Door Lock Lamp The DOOR LOCK lamp lights: • When the WASHER is operating • When the water level sensor frequency is lower than 22.9 kHz • When the temperature inside the tub is over 45° C (113°F) WM3988...
Page 12 Load Sensing Function Load Sensing Function In order to determine the size and weight of the load, the machine begins each cycle by tumbling the load a couple of times. It spins up to approximately 120 rpm for approximately 6 seconds.
Page 13 Load Sensing Function Load Sensing Function WM3988...
Page 14 Load Sensing Function Load Sensing Function WM3988...
Page 15 Load Sensing Function Load Sensing Function Determining the size and weight of the load allows the controller to estimate the amount of water required to wash and rinse the load. The fuzzy logic within the program will make numerous decisions during the cycle, adding water, desudsing, and rinsing as determined necessary.
Page 16 Water Circulation and Steam Water Circulation and Steam T-10 WM3988...
Page 17 Pumps Pumps T-10 WM3988...
Page 18 Parts Identification Parts Identification T-11 WM3988...
Page 19 Accessories Accessories T-12 WM3988...
Page 20 Shipping Bolts Shipping Bolts The shipping bolts MUST BE REMOVED before operating the washer. T-12 WM3988...
Page 21 Accessories Accessories T-12 WM3988...
Page 22 Installation Installation REMOVE THE SHIPPING BOLTS. LEAVE THEM WITH THE CUSTOMER. T-13 WM3988...
Page 23 Installation Installation INSTALL THE WASHER ON A FIRM, FLAT SURFACE. T-13 WM3988...
Page 24 Installation Installation T-13 WM3988...
Page 25 Connections Water Connections Water T-14 WM3988...
Page 26 Connections Drain Connections Drain T-14 WM3988...
Page 27 Connections Electrical Connections Electrical The steam combo requires a 120 VAC, 60 Hz., dedicated, 20-amp circuit. T-14 WM3988...
Page 28 Pedestal Kit (old style) Pedestal Kit (old style) This procedure covers installing and leveling the 7½” and 13” pedestals for 27” washers, dryers, and combos. If the products are stacked, the washer must be below the dryer, and only one pedestal is required.
Page 29 Pedestal Kit (old style) Pedestal Kit (old style) T-15 WM3988...
Page 30 Pedestal Kit (old style) Pedestal Kit (old style) T-15 WM3988...
Page 31 Pedestal Kit (old style) Pedestal Kit (old style) T-16 WM3988...
Page 32 Pedestal Kit (old style) Pedestal Kit (old style) T-16 WM3988...
Page 33 Pedestal Kit (new style) Pedestal Kit (new style) T-17 WM3988...
Page 34 Pedestal Kit (new style) Pedestal Kit (new style) T-17 WM3988...
Page 35 Pedestal Kit (new style) Pedestal Kit (new style) T-17 WM3988...
Page 36 Pedestal Kit (new style) Pedestal Kit (new style) T-18 WM3988...
Page 37 Pedestal Kit (new style) Pedestal Kit (new style) T-18 WM3988...
Page 38 Pedestal Kit (new style) Pedestal Kit (new style) T-18 WM3988...
Page 39 Pedestal Kit (new style) Pedestal Kit (new style) T-15 WM3988...
Page 40 Controls Controls T-19 WM3988...
Page 41 Program Chart Program Chart T-20 WM3988...
Page 42 Before Performing Service Before Performing Service • Be careful to avoid electric shock when disconnecting parts for troubleshooting. • Most terminals in the steam washer have 120 Volts AC or DC on them, sometimes even when the washer is off. The motor operates on 310 Volts DC.
Page 43 Cycle and Cycle and Option Chart Option Chart T-21 WM3988...
Page 44 Cycle and Option Information Cycle and Option Information T-22 WM3988...
Page 45 Steam Steam Steam can be added to every cycle except DELICATES, HAND WASH, WOOL, and SPEED WASH. It is locked out of these cycles to prevent damage to delicate clothing. While the laundry is washing, the steam generator boils water to spray steam through the laundry as it tumbles. T-22 WM3988...
Page 46 STEAM FRESH ™ STEAM FRESH ™ Steam Fresh™ is not an actual wash cycle. Instead, it is a cycle that tumbles up to five laundry items in a spray of steam to refresh the fabric and release the wrinkles. Water is not dispensed during the STEAMFRESH™...
Page 47 ALLERGIENE ™ ALLERGIENE ™ The Allergiene™ cycle is designed to use hotter wash water (140° F or 60° C) than the regular HOT wash (112° F or 50° C) but not as hot as the SANITARY cycle (158° F or 70° C). Its purpose is to remove all allergens, such as dust mites and their eggs and droppings, as well as lint and dead skin cells.
Page 48 Sanitary Sanitary The sanitary cycle is used to reduce bacteria and germs, as in baby clothes and sick room linens. The wash water temperature defaults to 158° F (70° C) and cannot be adjusted. T-23 WM3988...
Page 49 Bulky / Large Bulky / Large The BULKY / LARGE cycle is designed to launder large items like tablecloths and bed covers. It is NOT intended as an opportunity to overload the machine. Just because an item can be forced into the tub is not evidence it can be successfully laundered there.
Page 50 Cotton / Normal Cotton / Normal The COTTON / NORMAL cycle is the most often used cycle. It defaults to a 0:53 minute cycle time, but this may vary as the fuzzy logic makes numerous adjustments throughout the cycle. It is the only cycle that genuinely senses the load before displaying the approximate wash time.
Page 51 Delicates Delicates The delicate cycle defaults to a 0:42 minute cycle. The water level defaults to approximately 230. The default selections can be overridden for wash temperature, spin speed, and soil level, but certain options cannot be selected, such as steam, very hot water, and high speed spin.
Page 52 Hand Wash / Wool Hand Wash / Wool This cycle is designed for woolen articles and other garments that are suitable to be washed in water but must be treated very delicately. The HAND WASH / WOOL cycle defaults to a 0:55 minute cycle.
Page 53 Speed Wash Speed Wash SPEED WASH is the quickest cycle that provides a complete wash and rinse. It defaults to a 0:35 minute cycle. The default selections can be overridden for wash temperature, spin speed, and soil level, very hot water, and high speed spin, but certain options cannot be selected.
Page 54 Options Options When a cycle is selected, options like water temperature, spin speed, are preset for that cycle, but they can be overridden by selecting one of the option buttons on the control panel. For example, selecting a COTTON/NORMAL cycle will automatically default to a WARM wash, COLD rinse, HIGH spin speed, and NORMAL soil level.
Page 55 Spin Only Spin Only The SPIN ONLY cycle is not shown on the console. To engage SPIN ONLY, Press POWER and then SPIN SPEED. The COTTON / NORMAL LED will light. The machine will default to a 0:13 minute cycle on high speed unless EXTRA HIGH SPIN is selected, which will increase the cycle time to 0:17.
Page 56 Pre Wash Pre Wash Pre-wash adds a pre-wash cycle before the main wash cycle. Pre- wash fills the tub and dispenses what was put into the pre-wash detergent compartment. After filling and washing, the pre-wash water is pumped out and the main wash cycle begins. T-25 WM3988...
Page 57 Stain Cycle Stain Cycle The stain cycle adds time to the wash cycle and increases the temperature of the wash water for increased cleaning performance. T-25 WM3988...
Page 58 SPINSENSE ™ SPINSENSE ™ SPINSENSE™ is a setting that reduces the spin speed after sensing an unbalanced load. To engage the SPINSENSE™, press POWER and select a cycle. Press and hold the SPINSENSE™ (Rinse+Spin) button. SPINSENSE™ will remain engaged until it is disengaged by the user. Turning the machine off or losing power will not disable SPINSENSE™.
Page 59 Child Lock Child Lock CHILD LOCK is designed to disable the control pad after the cycle is started. To activate the CHILD LOCK after the cycle has begun, press and hold CHILD LOCK (Delay Start) until CL shows on the display. All controls will be disabled until the end of the cycle.
Page 60 Custom Program Custom Program The CUSTOM PROGRAM button allows the customer to set a commonly used program for personal convenience. For example, he may prefer the COTTON/NORMAL cycle but with a HOT WASH instead WARM, EXTRA HIGH SPIN instead of the regular spin, and a LIGHT SOIL level to shorten the cycle time.
Page 61 Tub Clean Tub Clean The TUB CLEAN cycle is designed to use extra hot water and a long wash cycle to remove soap scum and residue from the inside of the tub. Use it once a month to keep the washer clean and to prevent mildew and odor.
Page 62 Extra Rinse Extra Rinse The EXTRA RINSE cycle inserts a second rinse cycle, which extends the cycle time accordingly. This cycle is useful for customers who are sensitive to the dyes, perfumes, and other ingredients found in laundry products. T-26 WM3988...
Page 63 Rinse+Spin Rinse+Spin RINSE+SPIN is provided to rinse laundry and spin it before drying it. It is most often used for previously washed laundry that was inadvertently left in the washer instead of being promptly transferred to the dryer or clothesline. Rinse temperatures are limited to COLD or WARM water.
Page 64 Delay Cycle Delay Cycle The DELAY CYCLE button allows the user to put laundry into the machine, add the appropriate additives (HE detergent, softener, and bleach,) set the desired cycle and options, and delaying the start tome for up to 12 hours in 1-hour increments. This option is used to have the laundry ready to come out of the washer at a certain time, like when the customer gets home from work or after school, etc.
Page 65 Water Plus Water Plus Press and hold the WATER PLUS button to activate the language selection option. T-27 WM3988...
Page 66 Water Plus Water Plus The LANGUAGE button allows the user to select the display language from among English, Spanish, and French. T-27 WM3988...
Page 67 Water Temperature Control Water Temperature Control PREWASH CYCLE Cold water is supplied via the dispenser when the prewash valve opens. If COLD WASH / COLD RINSE is selected, the heater is not activated. If another WASH / RINSE temperature is selected, the heater still is not activated during the PREWASH unless the water temperature is lower than 85°...
Page 68 Water Temperature Control Water Temperature Control MAIN WASH and RINSE CYCLE At the beginning of the prewash cycle, COLD water is supplied via the dispenser when the prewash valve opens. Then HOT or COLD water is applied as required to create a wash of the programmed temperature, as shown in the table below.
Page 69 Water Temperature Control Water Temperature Control Prewash valve opens, cold water is supplied. B, D, and F Hot valve opens to raise water temperature to 131° F. C, E, and G Cold valve opens to lower water temp to 122° F. No water is supplied because water temp reaches target.
Page 70 Water Temperature Control Water Temperature Control Prewash valve opens, cold water is supplied. Hot valve opens to raise the water temperature to 122° F. No cold water is supplied; already reached the target level. Heater turns off when the water reaches target temp of 122° F. T-29 WM3988...
Page 71 Detergent Dispenser Detergent Dispenser T-31 WM3988...
Page 72 Dispenser Dispenser T-31 WM3988...
Page 73 Siphon Box Siphon Box T-31 WM3988...
Page 74 TEASPOONS of softener or bleach. While some HE laundry detergents suggest the use of as much as 4 ounces per load, this is entirely too much detergent for the LG machines. Due to the design of the machine, we do not recommend using it to...
Page 75 Direct Drive Motor Direct Drive Motor T-33 WM3988...
Page 76 Direct Drive Motor Direct Drive Motor T-33 WM3988...
Page 77 Direct Drive Motor Direct Drive Motor T-33 WM3988...
Page 78 Direct Drive Motor Direct Drive Motor T-33 WM3988...
Page 79 Disassembly and Repair Disassembly and Repair The following pages will show the instructions for disassembly, repair, replacement of parts, and re-assembly. Many times, electrical components may be tested by connecting the appropriate meter to the leads or connectors on the main PC Board. (Refer to the block wiring diagram, below.) Proper diagnosis will eliminate unnecessary labor and expedite repairs.
Page 80 Block Wiring Diagram Block Wiring Diagram T-34 WM3988...
Page 81 Control Panel Control Panel T-35 WM3988...
Page 82 Control Panel Control Panel T-35 WM3988...
Page 83 Control Panel Control Panel T-35 WM3988...
Page 84 Control Panel Control Panel T-35 WM3988...
Page 85 Main Board Main Board T-36 WM3988...
Page 86 Main Board Main Board T-36 WM3988...
Page 87 Main Board Main Board T-36 WM3988...
Page 88 Dispenser Dispenser T-37 WM3988...
Page 89 Dispenser Dispenser T-37 WM3988...
Page 90 Dispenser Dispenser # CONN WIRE COLORS VALVE 1 Blue (Orange and Black) Bleach 2 Red (Violet and Black) Steam 3 White (White and Black) Main (Cold) 4 Blue (Gray and Black) Pre Wash 5 Red (Blue and Black) Main (Hot) 6 Blue (Red and Black) Dryer Duct...
Page 91 Noise Filter Noise Filter T-38 WM3988...
Page 92 Front Cover Front Cover T-38 WM3988...
Page 93 Front Cover Front Cover T-38 WM3988...
Page 94 Front Cover Front Cover T-38 WM3988...
Page 95 Front Cover Front Cover T-39 WM3988...
Page 96 Front Cover Front Cover T-39 WM3988...
Page 97 Front Cover Front Cover CAUTION! The door is very heavy because of the large glass window. T-39 WM3988...
Page 98 Door and Hinge Door and Hinge T-40 WM3988...
Page 99 Door and Hinge Door and Hinge T-40 WM3988...
Page 100 Door and Hinge Door and Hinge T-40 WM3988...
Page 101 Pumps and Filter Housing Pumps and Filter Housing T-41 WM3988...
Page 102 Pumps and Filter Housing Pumps and Filter Housing T-41 WM3988...
Page 103 Pumps and Filter Housing Pumps and Filter Housing T-41 WM3988...
Page 104 Pumps and Filter Housing Pumps and Filter Housing T-41 WM3988...
Page 105 Wash Heater Wash Heater T-42 WM3988...
Page 106 Foreign Object Removal Foreign Object Removal T-42 WM3988...
Page 107 Water Level Switch Water Level Switch T-43 WM3988...
Page 108 Motor Motor T-44 WM3988...
Page 109 Motor Motor T-44 WM3988...
Page 110 Motor Motor T-44 WM3988...
Page 111 Tub and Drum Tub and Drum T-45 WM3988...
Page 112 Tub and Drum Tub and Drum T-45 WM3988...
Page 113 Dampers Dampers T-46 WM3988...
Page 114 Dampers Dampers T-46 WM3988...
Page 115 Dampers Dampers T-46 WM3988...
Page 116 Test Mode Test Mode The steam washer must be empty and off to enter the test mode. • Press and hold SPIN SPEED and SOIL LEVEL. • Press POWER. The buzzer will sound twice. • Press START/PAUSE to cycle through the test modes. (See chart, below.) T-47 WM3988...
Page 117 Test Mode Test Mode Number of times Event Display Start/Pause pressed None All lamps on / door locked QC TEST MODE Drain pump/Tumble clockwise (42 ~ 50) Spin – Low speed (55 ~ 65) Spin – High Speed (105 ~ 125) Water level freq.
Page 118 Notes for Test Mode Notes for Test Mode 1. Insert a zero at the end of the displayed numbers to determine the actual rpm. 62 indicates 620 rpm; 115 indicates 1,150 rpm. 2. Insert a 2 at the beginning of the displayed number to determine the actual water level frequency.
Page 119 Test Mode Display Test Mode Display T-48 WM3988...
Page 120 Test Mode Display Test Mode Display The following button combinations allow access to these sensor readings: PREWASH and CUSTOM Steam generator temperature in °C WASH/RINSE and CUSTOM Tub water temperature in °C SOIL LEVEL and CUSTOM Water level (displayed as a frequency) SPIN SPEED and CUSTOM Drum rpm speed (see note, previous page) T-48...
Page 121 Test Mode Display Test Mode Display T-48 WM3988...
Page 122 Error Codes Error Codes If you press START / PAUSE when an error code is displayed, any error except PE will disappear and the machine will revert to PAUSE status. In the cases of a PE, TE, or DE error code, if the error is not cleared within 20 seconds, the machine will be turned off automatically and the error code will blink on the display.
Page 123 Error Codes Error Codes T-49 WM3988...
Page 124 Error Codes Error Codes T-50 WM3988...
Page 125 Troubleshooting Summary Troubleshooting Summary T-50 WM3988...
Page 126 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Inlet Valve Error (IE) T-51 WM3988...
Page 127 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Inlet Valve Error (IE) T-52 WM3988...
Page 128 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Drain Error (DE) T-53 WM3988...
Page 129 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Drain Error (DE) T-54 WM3988...
Page 130 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Heating (Thermal) Error (tE) WM3988 T-55...
Page 131 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Heating (Thermal) Error (tE) T-56 WM3988...
Page 132 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Locked Motor Error (LE) T-57 WM3988...
Page 133 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Locked Motor Error (LE) T-58 WM3988...
Page 134 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Door Open Error T-58 WM3988...
Page 135 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Door Open Error T-61 WM3988...
Page 136 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Unbalance Error T-60 WM3988...
Page 137 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Overflow Error (FE) T-61 WM3988...
Page 138 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Pressure Error (PE) T-62 WM3988...
Page 139 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Dryer Heater Error (dHE) T-63 WM3988...
Page 140 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Dryer Heater Error (dHE) T-64 WM3988...
Page 141 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Dryer Heater Error (dHE) T-65 WM3988...
Page 142 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Dryer Heater Error (dHE) T-66 WM3988...
Page 143 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) No Power T-67 WM3988...
Page 144 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) No Power T-68 WM3988...
Page 145 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Buttons Do Not Operate Properly T-69 WM3988...
Page 146 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Buttons Do Not Operate Properly T-70 WM3988...
Page 147 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Vibration and Noise in the Spin Cycle T-71 WM3988...
Page 148 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Laundry Products Do Not Dispense T-72 WM3988...
Page 149 Troubleshooting Troubleshooting (with Error Codes) (with Error Codes) Abnormal Sound T-73 WM3988...
Page 150 Component Test Procedures Component Test Procedures Several components of the machine can be tested before removing or exchanging them. Some test procedures can be completed without major disassembly other than to disconnect the component from its circuit; others may be tested from their connector on the control panel.
Page 151 Component Test Procedures Component Test Procedures Noise Filter T-73 WM3988...
Page 152 Component Test Procedures Component Test Procedures Using an ohmmeter, check from the white connector terminal 1 to the red connector terminal 3. The resistance should be 0Ω. Then check from the white connector terminal 3 to the red connector terminal 1. The resistance should be 0Ω. If these tests pass, reconnect the white connector but not the red connector.
Page 153 Component Test Procedures Component Test Procedures Door Lock Switch T-74 WM3988...
Page 154 Component Test Procedures Component Test Procedures Test results at 77° F (25° C) Door Lock / Unlock 2 to 3 700 ~ 1,500 Ω 3 to 4 60 ~ 90 Ω 4 to 5 ∞ (infinity) 2 to 4 120 VAC (input voltage) T-74 WM3988...
Page 155 Component Test Procedures Component Test Procedures Stator T-75 WM3988...
Page 156 Component Test Procedures Component Test Procedures Stator All test points should read the same. 1 to 2 5 ~ 15 Ω 2 to 3 5 ~ 15 Ω 5 ~ 15 Ω 1 to 3 T-75 WM3988...
Page 157 Component Test Procedures Component Test Procedures Hall Sensor T-76 WM3988...
Page 158 Component Test Procedures Component Test Procedures Hall Sensor Hall Sensor testing methods are now available on the following hall sensor is pages when LE error code troubleshooting says “ out of order or defective. ” T-76 WM3988...
Page 159 Component Test Procedures Component Test Procedures Hall Sensor 1 – BL (Ha) 2 – RD (Hb) 3 – Not Used 4 – GRY (-) Magnetic Pickups & Attaching Clips 5 – WH (+) OHM Checking Voltage Checking 5 to 1 = 10 K Ω 5 to 4 = 10 to 15 V Voltage Input 5 to 2 = 10 K Ω...
Page 160 Component Test Procedures Component Test Procedures Hall Sensor Part No. 6501KW2002A T-78 WM3988...
Page 161 Component Test Procedures Component Test Procedures Testing the Hall Sensor from the Control Board T-79 WM3988...
Page 162 Component Test Procedures Component Test Procedures Hall Sensor Actual Terminal Wiring The potting epoxy has been removed to show the PC board and components. T-79 WM3988...
Page 163 Component Test Procedures Component Test Procedures Hall Sensor T-80 WM3988...
Page 164 Component Test Procedures Component Test Procedures Pump Motors T-81 WM3988...
Page 165 Component Test Procedures Component Test Procedures Pump Motors T-81 WM3988...
Page 166 Component Test Procedures Component Test Procedures DRAIN PUMP 1 to 2 10 ~ 20 Ω CIRCULATION PUMP 1 to 2 18 ~ 30 Ω T-82 WM3988...
Page 167 Component Test Procedures Component Test Procedures Inlet Valve Assembly T-83 WM3988...
Page 168 Component Test Procedures Component Test Procedures For all solenoids: With the solenoid connected and energized, the voltage should be 120 VAC. With the connector removed from the solenoid, the resistance should be 1.0 Ω ± 20%. T-83 WM3988...
Page 169 Component Test Procedures Component Test Procedures Heater Driver Circuit (general) When the heater is energized, use your multimeter to read the voltage. It should be approximately 120 VAC. You can read the voltage either at the heater terminals or at its connector on the main board.
Page 170 Component Test Procedures Component Test Procedures Heater Circuits When using the connectors for test points, pay particular attention to connector and wire colors and numbers. T-84 WM3988...
Page 171 Component Test Procedures Component Test Procedures Wash Heater T-85 WM3988...
Page 172 Component Test Procedures Component Test Procedures Wash Heater T-85 WM3988...
Page 173 Component Test Procedures Component Test Procedures Wash Heater T-85 WM3988...
Page 174 Component Test Procedures Component Test Procedures Dryer Duct T-86 WM3988...
Page 175 Component Test Procedures Component Test Procedures Steam Generator The TSG (Turbo Steam Generator) is supplied as an assembly only; parts like the sensor, thermistor, or heater cannot be replaced individually. Diagnosis is limited to determining malfunction and replacing the assembly. The steam generator does not have to be removed from the machine to be drained.
Page 176 Component Test Procedures Component Test Procedures Whatever T-87 WM3988...
Page 177 Component Test Procedures Component Test Procedures Steam Generator T-87 WM3988...
Page 178 Component Test Procedures Component Test Procedures Steam Generator T-88 WM3988...
Page 179 Component Test Procedures Component Test Procedures Steam Generator T-88 WM3988...
Page 180 Component Test Procedures Component Test Procedures Steam Generator T-89 WM3988...
Page 181 Component Test Procedures Component Test Procedures Steam Generator T-89 WM3988...
Page 182 Component Test Procedures Component Test Procedures Steam Generator T-89 WM3988...
Page 183 Component Test Procedures Component Test Procedures Steam Generator T-89 WM3988...
Page 184 Component Test Procedures Component Test Procedures Sensor Wiring Diagram Steam Generator T-90 WM3988...
Page 185 Component Test Procedures Component Test Procedures Low Water Sensor Detecting Water T-90 WM3988...
Page 186 Component Test Procedures Component Test Procedures High Water Sensor Detecting Low Water T-91 WM3988...
Page 187 Component Test Procedures Component Test Procedures High Water Sensor Detecting Full T-91 WM3988...
Page 188 Component Test Procedures Component Test Procedures Steam Generator Wiring T-91 WM3988...
Page 189 Component Test Procedures Component Test Procedures Water Level Sensor T-92 WM3988...
Page 190 Component Test Procedures Component Test Procedures Thermistor Assembly T-93 WM3988...
Page 191 Component Test Procedures Component Test Procedures Test resistance across terminals 1 and 2. Wash Thermistor 39.5 kΩ ± 5% at 86° (30° C) 26.1 kΩ ± 5% at 104° (30° C) 12.1 kΩ ± 5% at 140° (30° C) 8.5 kΩ ± 5% at 158° (30° C) 3.8 kΩ...
Page 192 Component Test Procedures Component Test Procedures Test resistance (DA1) across Dryer Thermistor terminals 1 and 2. 39.5 kΩ ± 5% at 86° (30° C) 26.1 kΩ ± 5% at 104° (30° C) 12.1 kΩ ± 5% at 140° (30° C) 8.5 kΩ...
Page 193 Component Test Procedures Component Test Procedures Test resistance across Steam Generator terminals 1 and 2. Thermistor 39.5 kΩ ± 5% at 86° (30° C) 26.1 kΩ ± 5% at 104° (40° C) 12.1 kΩ ± 5% at 140° (60° C) 8.5 kΩ...
Page 194 Component Test Procedures Component Test Procedures Drum Lamp T-96 WM3988...
Page 195 Component Test Procedures Component Test Procedures T-96 WM3988...
Page 196 Tips and Tricks Tips and Tricks Hoses T-97 WM3988...
Page 197 Tips and Tricks Tips and Tricks Baffles (Lifters) T-97 WM3988...
Page 198 Tips and Tricks Tips and Tricks Mushroom Valve T-97 WM3988...
Page 199 Main Board Labeled Main Board Labeled T-98 WM3988...
Page 200 Exploded Views Exploded Views T-99 WM3988...
Page 201 Parts List Parts List Loc # Part No Description *001 AFN30385117 Manual Assembly, Owners *002 MAY37166202 Box, Carton *003 3W20018B Spanner *004 MFL30599110 Manual, Service *009 MEG41552101 Holder A100 3091ER0004N Cabinet Assembly A101 3550ER1028A Cover, Rear A102 4830ER3001A Bushing, drain pipe exit A103 4930ER3014A Holder...
Page 202 Special Tools Special Tools 383EER4001A GASKET PLIER 383EER4003A DAMPER PLIER 383EER4004A GASKET PLIER 5214FR3018D DRAIN HOSE EXTENSION PUTTY KNIFE NOT USED THIS MODEL T-106 WM3988...
Page 203 Serial Number (old style) Serial Number (old style) [Example] 801KW3400251 00251 Production Number [Internal code] Made in Korea Manufactured January 2008 T-107 WM3988...
Page 204 Serial Number (new style) Serial Number (new style) New Serial Code (ETA Mid 2008) 12345 KR 406 YP 000002 + Options Sequential number Internal code Year and month of production (YMM) Production site (2 Letters) Model ID T-106 WM3988...
Page 205 ’ s Law ’ s Law E I • E/R • E /R WATTS CURRENT VOLTS OHMS P R • E /P I R • T-108 WM3988...
Page 206 Temperature and Conversion Temperature and Conversion FORMULAE °F = (9/5) °C + 32 °C = (5/9) x (°F – 32) T-109 WM3988...
Page 207 Supplementary Information Supplementary Information WASH TEMPERATURES Sanitary 158° F (70° C) Allergiene 140° F (60° C) 122° F (50° C) Warm 104° F (40° C) Cold 86° F (30° C) Tap Cold whatever is in the pipe T-109 WM3988...
Page 208 Supplementary Information Supplementary Information SPIN SPEEDS Extra High 1,150 rpm High 1,010 rpm Normal 1,000 rpm 960 rpm Gentle 400 rpm T-109 WM3988...
Page 209 Supplementary Information Supplementary Information SOIL LEVEL Increases or decreases total cycle times (wash and rinse) Heavy 1:22 Normal 0:52 0:47 T-109 WM3988...
Page 210 The End WM3988...

LG WM3988H-A Series Manual

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