WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
CAUTION
MODEL : WT1801H*A /01
Page 1: ...WASHING MACHINE SERVICE MANUAL READ THIS MANUAL CAREFULLY TO DIAGNOSE PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT CAUTION MODEL WT1801H A 01 ...
Page 2: ...ergized Pump bracket rotor and heater Disconnect this appliance from the power supply before servicing Turning the controls to the off position does not disconnect this appliance from the power supply Failure to do this can result in shock Reconnect all grounded devices after servicing Failure to do this can result in shock CONTENTS 1 Specifications 3 2 Installation Instructions 2 1 How to Adjust ...
Page 3: ... Speed 1100 50 rpm Weight 137 3 lbs 62 3 kg Cycles Normal Heavy Duty Bulky Bright Whites Sanitary Allergiene Perm Press Towels Wool Delicates Speed Wash Tub Clean Time Delay 1 19 Hr Lid Interlock Switch Magnet Sensor Control Lock Yes Softener Dispenser Yes Detergent Dispenser Yes Bleach Inlet Yes Auto Power Off Yes Smart Rinse with Jet Spray Yes Heater Yes ...
Page 4: ... cause noise and malfunctioning 1 Installation area Install the washer on a firm flat surface If the washer is installed on an unsuitable floor it could make considerable noise and vibrate 2 3 Checking level Open the lid check if the washer is correctly leveled by looking down from the top If the tub is not centered in the opening then the washer is not level No shims It would be dangerous If the ...
Page 5: ...kwise to lower Distance between the drain hose and the wall Distance between the drain hose and the wall should be more than 4 inches 10 cm and the distance between any other part and the wall should be more than 1 inches 2 5 cm Do not install the washer in the following places Where the washer is exposed to direct sunlight Near a heater or heating appliance Where the washer is exposed to freezing...
Page 6: ...After connecting the hose open the tap to check for any water leakage Connecting Water Supply Hose to the Machine Be sure there is a gasket in the end of the hose Connect the hose to the appropriate inlet vale hotorcold ofthewashingmachineandtightenif firmly Turn on the water and check for leacks Always install new hoses with a new washing machine Do not re use old hoses Relplace the hoses every f...
Page 7: ...avoid siphoning and odor build up Cable Tie Cable Tie 35 47 0 9 1 2m 35 47 0 9 1 2m WARNING The washer should never be installed or stored in a location subject to freezing temperatures If the washer was exposed to freezing temperatures prior to installation allow it to stand at room temperature for several hours before use Damage to the water lines and internal mechanisms of the washer can result...
Page 8: ...SE HOT WATER SUPPLY HOSE Make sure the water does not leak POWER PLUG If the supply cord is damaged it must be replaced by the manufacturer or its service agents or similarly qualified person in order to avoid a hazard HARDENED GLASS DOOR DRAIN HOSE Be sure the drain hose is properly installed on the drain before operating the washer Smart Rinse with Jet Spray This washer is designed to save rinse...
Page 9: ...mable materials waxes cleaning fluids etc Load Size The WATER LEVEL should just cover the clothes Adjust the load size accordingly Loosely load clothes no higher than the top row of holes in the washer tub To add items after washer has started press the START button and submerge additional items Close the lid and press the Start button again to restart Do not wash waterproofed fabrics such as skii...
Page 10: ...lors with light soil When washing in COLD water additional steps may be needed Adjust detergent amount and pre dissolve detergent in WARM water Pretreat spots and stains Soak heavily soiled items Use appropriate bleach Temperature below 18 C 65 F will not activate laundry additives and may cause lint residue poor cleaning etc In addition detergent manufactures and care labels define COLD water as ...
Page 11: ...ine bleach into the bleach dispenser During the final portion of the wash cycle two sequential flushes of the dispenser put all the bleach into the wash load and completely flush the dispenser to eliminate the carryover of bleach to a subsequent load Any liquid remaining in the bleach dispenser at the end of the cycle is water not bleach To prevent unintentional self siphoning of the bleach never ...
Page 12: ...most effective cleaning After adding the laundry products to the dispenser close the dispenser drawer Close the dispenser drawer gently to avoid spilling or starting the siphoning action To add detergent bleach and fabric softener to the automatic dispenser Open the dispenser drawer Load the laundry products into the appropriate compartments Close the lid slowly and smoothly to avoid spilling spla...
Page 13: ...ic softener Dilute with water to the maximum fill line Do not exceed the maximum fill line Overfilling can cause early dispensing of the fabric softener which could stain clothes NOTE Do not pour fabric softener directly on the wash load It may stain the clothes If you use an ultra thick fabric softener you might want to dilute it with water so it dispenses easily Adding Wash Boost Additives The w...
Page 14: ...umes may result Never wash items which have been previously cleaned in washed in soaked in or spotted with gasoline dry cleaning solvents or other flammable or explosive substances because they give off vapors that could ignite or explode Never use highly flammable solvents such as gasoline inside the home Vapors can explode on contact with flames or sparks For successful stain removal Remove stai...
Page 15: ... fabric Scrape residue from fabric Pretreat Wash using hottest water safe for fabric For heavy stains and tar apply nonflammable dry cleaning fluid to back of stain Replace towels under stain frequently Rinse throughly Wash using hottest water safe for fabric Some inks may be impossible to remove Washing may set some inks Use prewash stain remover denatured alcohol or nonflammable dry cleaning flu...
Page 16: ...h Temperature Pressing the button allows The selection of Tap cold Cold WARM EXTRA HOT respectively Default setting is Warm Wash Temp Note The time shown on the display is the estimated cycle time If the sensors and microprocessor elect to make changes during the cycle the display will be adjusted accordingly Fabric Softener Causes the dispensing of fabric softener in the final rinse cycle Load Se...
Page 17: ...made to the wash settings while the machine is paused Repeats start and pause by pushing the button Soil Level Allows a selection to be make for the strength of the wash action Power option selections light up in sequence as follows Normal Heavy Light Normal as the button is pushed This can be selected for any program Adjustment can be made while washing Default SOIL LEVEL is Normal Spin Speed Spi...
Page 18: ...ters Warm High Normal Hot Cold Tap Cold Extra High Medium Low No Spin Heavy Light Use the Bulky cycle for items such as pillows comforters pet bedding and other articles which have dif ficultly absorbing water DO NOT WASH EXCESSIVELY LARGE ITEMS If large bulky items do not fit easily into the tub there may not be enough room for them to move during washing Keep like items together do not mix large...
Page 19: ...d Tap Cold Medium No Spin Heavy Light Delicates Dress shirts blouses nylons sheer or lacy gar ments less than 8 lbs Tap Cold Low Light Warm Cold High Medium No Spin Heavy Normal Speed Wash Lightly soiled and small loads Warm High Light Cold Tap Cold Extra High Medium Low No Spin Heavy Normal Tub Clean Refer to page 27 Hot High Light NOTE To protect your garments not every wash rinse temperature sp...
Page 20: ...mable DO NOT put them in washer or dryer Some pretreatment sprays or liquids can damage your washer s control panel Use of dyes in your washer may cause staining of the plastic components The dye will not damage the machine but we suggest you thoroughly clean your washer afterwards We do not recommend the use of dye strippers in your washer Do not use your washer lid as a work surface If Frozen Re...
Page 21: ... for diagnosis and repair If this is not possible touch the ground wire on a regular basis to remove any static charge built up on your person 1 Remove front panel and main PCB assembly Remove 2 cap and 2 screw attaching the front panel Push the front panel left and pull the front panel forward Disassemble the protective cover Disconnect the leads from controller 4 SERVICE INFORMATION ...
Page 22: ...ter Remove the power cord from the noise filter Inlet Valve Disconnect the leads from the inlet valve and remove three screws Remove the hoses and output pipes from the input valve Remove the inlet valve Pressure Switch Disconnect the leads from pressure switch and detatch the pressure switch from the machine Disconnect the pressure tube from the pressure switch Dispenser Housing Remove the hoses ...
Page 23: ...rews attaching the back side of top cover Remove 2screws that assembly the top cover with the front panel Lift the top cover at the front of the washer Remove the hinge cover and 6 hinge screw Pull the hinge to the left and right and Remove the hinge ...
Page 24: ...pulsator washer Tub Cover Pulsator Cap Pulsator Screw Pulsator Inner Tub Cap Hub Fixing Nut Outer Tub Inner Tub Stator Rotor Nut Hub Attachment Nut Shaft Bearing Housing ASM Rotor Inner Tub Cap Hit the bar using the hammer Disconnect hub nut and disassemble the inner tub 5 Assemble the service tool 38 mm wrench 6 Remove the hub attachment nut 38 mm ...
Page 25: ... and the drain hose from the drain pump Remove the pump attachment screws and the lead connector Take the pump assembly out of the washer 8 Disassembly of Damper Assembly Remove the top cover and the back cover of the washing machine Pull out the hinge which connect the horizontal damper with outer tub To disassembly the horizontal damper take the horizontal damper out of the holder As shown in th...
Page 26: ...it faces the rotor and stator To keep from dropping the stator loosen the six bolts almost all the way then hold the stator in one hand while removing the bolts with the other Be careful during removal and replacement to avoid cutting nicking or pinching any of the wires This could cause a short or electrical noise in the machine Remove the screws that secure the water guide ...
Page 27: ...tachment screws Remove the door switch and remove the attachment tube Remove 17 screws to release the bearing housing Pull the housing away from the tub but do not pry it with a screwdriver to avoid damage Remove four screws to release the tub bracket Bearing Housing ...
Page 28: ...4 2 WIRING DIAGRAM 28 Motor ...
Page 29: ... Status None Main program version t1 and main program version 1 time Display program version t2 and display program version 2 time None t3 3 time Inlet valve for detergent turns on Cold Water A and water level frequency 268 233 4 time Inlet valve for detergent turns on Hot Water b and water level frequency 268 233 5 time Inlet valve for softener turns on Cold Water C and water level frequency 268 ...
Page 30: ...ect amount of detergent for load size amount of soil and water hardness Use WARM or HOT water for normal soil Different water temperature may be required according to soil type refer to page 10 Reduce load size Wash with heavy or soak heavy wash cycle for heavy soiled laundry Separate heavily soiled items from lightly soiled ones Pretreat stain and heavy soil according to directions shown on page ...
Page 31: ...itch WH6 Pin1 GND Pin2 LIDLOCK_SIGNAL Input Pin3 LIDLOCK_CONTROL Output Pin4 LID_SW Pin5 REED_SW Display CN2 Pin1 16 5v Pin2 LID_SW Pin3 BZ_OUTPUT Pin4 Pin5 BZ_PWM_SMART Display CN1 Pin1 Rx Pin2 Tx Pin3 GND Pin4 Pin5 5v Pin6 TEST Display RD2 Pin1 NORMAL_CONNECT Pin2 NORMAL_OPEN Pin4 COMMON Thermistor Pressure Sensor BL6 Pin3 Temp input Pin6 GND Pin2 S1 Pin4 GND Pin5 S2 YL2 Pin1 Sensing Pin 1 Pin2 ...
Page 32: ...32 4 6 PCB Picture RD3 WH6 YL3 RD6 RD2 WH1 BL3 BL2 BL6 YL2 ...
Page 33: ...ue to freeze or dirt Defective drain pump or the WHITE 6 pin connector to the main board has a bad connection Laundry in the INNER TUB is filled unevenly Washer is tilted Lid is opened during intermittent spin or normal spin Lid is opened while processing reservation Check the connections to the lid switch and at the WHITE 6 pin connector at the main board Open water faucet Wait until water supply...
Page 34: ...tub and at any connecting parts Check the connections at the hall sensor and at the BLUE 6 pin connector on the main board Check the connections at the stator and at the yellow 3 pin or BLUE 6 pin connector on the main board Test the stator to determine it is not defective Test hall sensor to determine it is not defective Turn the drum to verify the bearings are not locked Check the lid lock SW tr...
Page 35: ...upling is broken Check the connections at the AC motor and at the WHITE 6 pin connector at the main board TestAC motor or coupling to determine it is not detective Reseat the connector Replace the AC motor if necessary Replace the coupling or Clutch housing if necessary MOTOR Check Foreign objects such as coins pins clips etc being caught between the wash plate and the inner basket Turn off the wa...
Page 36: ...nning 120V 5 Stopped Motor Pump 0 1V Method 1 Enter the SERVICE Mode 2 Press START PAUSE button 1 time Main version 2 times Display version 3 times Inlet valve check mode 4 times Cold valve bleach valve 5 times Rinse valve hot valve 6 times Jet spray valve 7 times Heater check 8 times Alph check 9 times Pump check Note Environmental check list 1 The drainage hose must not stay in a lower position ...
Page 37: ... Check the IPM in the controller Is IPM short Yes No Yes Is the resistance values in the range of 5 to15 Ω U V V W W V U 1 V 2 W 3 After pull out the YL3 connector check the terminal of the connector in wire No Replace the ROTOR Replace the STATOR Replace the MAIN PCB ASSEMBLY Part of motor Motor Motor Drive Motor Drive Motor Drive Motor Drive Motor Drive Motor Drive Motor Drive Motor Drive Motor ...
Page 38: ... work when the power is not applied Replace the INLET VALVE ASSEMBLY No Adjust the height of washing machine to be kept horizontally Yes If the inlet valve works continuously when the power is applied replace the MAIN PCB ASSEMBLY OVER FLOW ERROR Check the AIR CHAMBER and the tube clogged Yes When you enter the service mode is the water level frequency over 21 0 kHz No Is UE displayed Is FE displa...
Page 39: ... sensor disconnected or disassembled Yes Replace the pressure switch No Is the resistance of the pressure sensor out of range pin 1 pin 3 21 23 Ω 10 Yes No Is the AIR CHAMBER and the tube clogged Yes Fix the air chamber and remove the foreign material Replace the MAIN PCB assembly Is PE displayed Yes ...
Page 40: ... three pin wire of display PCB broken Yes Replace the MAIN PCB ASSEMBLY No Is LED on while the power is on Yes Check the fuse or reset the circuit breaker Yes Is the supplied voltage 120V AC 10 15 No Reconnect or repair the connector Yes Is the connector connected to PCB Noise filter disconnected or disassembled No Alternate with explanation Yes Is the current rating of multi outlet power strip en...
Page 41: ...nd and LED light while touch the LCD Yes Yes No Is the connector connected to Main PCB Display PCB disconnected or disassembled Reconnect or repair the connector Connecting connector Main PCB Display PCB POWER BUTTON DOESN T WORK Yes No Is the button of panel stuck Repair the button ...
Page 42: ...cking the component be sure to turn the power off and do voltage discharge sufficiently Wiring diagram Test points and Result Circuit in the MAIN PCB Wiring Diagram MAIN PCB ASSEMBLY 3 3 1 1 RD1 WH1 Vac 1 1 2 2 2 2 Test Points WH 1 to RD 1 WH 3 to RD 2 Result 0 Ω 0 Ω 1 3 1 2 RD1 WH1 WARNING ...
Page 43: ...cted with plunge is pushed out the key The key must be in the proper position for the PCB to sense that the door is locked otherwise the dL error code will be displayed If the latch does not extend far enough the PCB will display the dL error code This can happen for example if the solenoid does not operate Note The door will attempt to lock 3 times If it does not successfully lock the solenoid wi...
Page 44: ...44 Test points 1 7 13 9 6 8 11 10 5 4 3 2 12 Parts COVER SCREW LEAD WIRE PACKING SOLENOID CASE HAND WIRE MICRO SW SOL SPRING PLUNGER KEY LEVER RUBBER CASE No 1 2 3 4 5 6 7 8 9 10 11 12 13 ...
Page 45: ... stopped to maximum speed in infinite steps in either direction There are 36 poles on the stator 12 permanent magnets spaced around the rotor There are no brushes to wear out Unlike a more traditional brushless motor the rotor surrounds the stator rather than being attached to it Result 5 15 Ω 5 15 Ω 5 15 Ω Test Points 1 to 2 2 to 3 3 to 1 WINDINGS 1 3 2 ...
Page 46: ...5 4 PUMP MOTOR ASSEMBLY 46 Wiring diagram Test points and Result Circuit in the MAIN PCB Wiring Diagram 1 2 Result 10 9 Ω 5 Remarks Resistance Test Points 1 to 2 ...
Page 47: ...t valve driving circuit Depending on the cycle and water temperature the controller will energize the hot or cold water valve solenoids to meet the selected water temperature After unplugging the connector of the defective valve check the resistance 1 2 2 2 2 2 1 1 1 1 All valves operate at 13 5 VDC Test Points 1 2 Result 24 10 Ω ...
Page 48: ...HERMISTOR ASSEMBLY 48 Wiring diagram Function Test points Circuit in the MAIN PCB Wiring Diagram Wash Thermistor The thermistor temperature sensor is used to monitor water temperature in the tub MAIN PCB 2 1 ...
Page 49: ...it standard The upper limit 70 519 46 997 22 285 15 803 6 984 5 180 76 531 50 584 23 623 16 635 7 471 5 573 82 848 54 307 24 978 17 467 7 971 5 981 Test Points 1 to 2 Remarks Result At 86 30 At 104 40 At 140 60 At 158 70 At 203 95 At 221 105 ...
Page 50: ...2 18 kΩ 1 The Wash Heater is designed to raise the wash water to the desired temperature selection during certain wash cycles 2 The Steam generator heater is designed to make the water to the steam during steam cycles Each circuits of loads in wiring diagram are all same Heater driving circuit WASH HEATER Wash Heater Wash Heater 1 2 ...
Page 51: ...6 EXPLODED VIEW 51 BODY A BODY B ...
Page 52: ...IEW OF OUTER CASE ASSEMBLY 52 A230 A240 A202 A203 A201 A200 A100 A165 A410 A163 A165 A241 A030 A040 A050 A062 A140 A186 A157 A010 A020 A101 A101 A061 A190 A163 A180 A183 A390 A151 A153 A154 A152 A150 A380 A184 A063 ...
Page 53: ...6 2 EXPLODED VIEW OF OUTER CASE ASSEMBLY 53 F070 F032 F000 F023 F027 F082 F080 F150 F100 F090 F086 F020 F016 ...
Page 54: ...6 3 EXPLODED VIEW OF TUB ASSEMBLY 54 K064 K000 K005 K021 K020 K100 K250 K061 K060 NATURAL K340 K345 K200 K210 K201 K305 K300 K170 K290 K230 K050 K140 K350 K040 K012 K030 K104 K420 K410 K400 ...
Page 55: ...7 REPLACEMENT PART LIST 55 ...
Page 56: ... Press Delay Soil Level IPM Temp Wiring Color Legend BL Blue BN Brown GN Green GY Gray PK Pink RD Red SB Sky Blue WH White YL Yellow NOTES Test Mode Component Tests Press Power Press Steam Turbo Key in 1 sec Press START PAUSE to cycle thru tests Voltage Tests with connectors installed Chm Tests with connectors removed Error Message IE WATER SUPPLY ERROR OE DRAIN ERROR UE UNBALANCE ERROR dE LID OPE...
Page 57: ...MFL68909505 JAN 2015 PRINTED IN KOREA ...
