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LG WM2650H Series, Service Manual

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LG WM2650H Series Service Manual Download Page 30

30

8-5. TROUBLESHOOTING ELSE

NO POWER

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.

CAUTION

Check the
fuse or reset
the circuit
breaker.

Yes

No

Is the current rating of
multi-outlet power strip
enough?
(Avoid connecting several
electric devices.)

Is the supplied voltage
120V AC?(+10%, -15%)

Alternate with
explanation.

Yes

Yes

No

Is the connector connected
to PCB/Noise filter
disconnected or
disassembled?

Reconnect
or repair
the connector.

No

Replace the
MAIN PWB
ASSEMBLY.

Yes

No

Is LED on while the power
is on?

Replace the
DISPLAY
PWB
ASSEMBLY.

Display PWB

Connecting connector

MAIN PWB~ Display PWB

No

Is five pin wire of
display PWB broken?

Summary of Contents for WM2650H Series

Page 1: ...MODEL WM2650H A ...

Page 2: ...UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU UUUUUUUUUUUU YX _TYUGl Gt Gz G UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU YXTYY _TZUG Gz GUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU YZ _T UG G Gl GUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU...

Page 3: ... tY WoQh OZU XkvlP X_XU O_YU P ...

Page 4: ...rtains can be washed Direct Drive System The advanced brushless DC motor directly drives the drum without belt and pulley Tilted Drum and Extra Large Door Opening Tilted drum and extra large opening make it possible to load and unload clothing more easily Automatic Wash Load Detection Automatically detects the load and optimizes the washing time Child Lock The child lock prevents children from pre...

Page 5: ...m then proceeds Spinning does not proceed until the water in the tub drains to a certain level water temperature washing time rinsing time the best washing performance spin rhythm time load size NEURO FUZZY selected washing temperature SENSING EFFECT PROCESSING DETERMINATION The door can be opened by pulling the door handle whenever washer is not in operation When the cycle is completed the DOOR L...

Page 6: ... THE TEMPERATURE INSIDE THE TUB IS HIGHER THAN AND WATER LEVEL IS NOT K Z T CAN BE CANCELED WHEN THE WATER LEVEL IS K Z OR THE TEMPERATURE INSIDE THE TUB IS LOWER THAN 5SE THIS OPTION TO PREVENT UNWANTED USE OF THE WASHER 0RESS AND HOLD 34 2 BUTTON FOR SECONDS TO LOCK UNLOCK CONTROL 7HEN CHILD LOCK IS SET LIGHTS AND ALL BUTTONS ARE DISABLED EXCEPT THE 0 7 2 BUTTON 9OU CAN LOCK THE CONTROLS OF THE ...

Page 7: ...7 3 PARTS IDENTIFICATION ...

Page 8: ... After servicing operate the appliance to see whether it functions correctly STANDARD INSTALLATION The appliance should be installed as follows Remove the 4 shipping bolts with the supplied wrench Remove the lower boits fist It is easier that way Keep the shipping bolts and spanner for future use Insert the 4 caps provided into the hole Turn clockwise to raise counterclockwise to lower Turn the le...

Page 9: ...ause drips on the drawer panel handle and drawer panel HOW TO CONNECT THE INLET HOSE CONNECT THE DRAIN HOSE Make sure that the hose is not twisted CONNECT POWER PLUG The end of the drain hose should be placed less than 96 from the floor Avoid submerging the end of the hose Connect the power plug to the wall outlet Avoid connecting several electric devices as doing so may cause a fire ...

Page 10: ...erse rotation 4 Check the water supply Check if water is supplied through the detergent dispenser 7 Check the drain and spin functions Power off and the power on Press the SPIN SPEED button Press the START PAUSE button Check the spin and drain functions 8 Press the START PAUSE button 9 Water removal If SERVICE is needed during check remove the remaining water by pulling out the hose cap 2 Press th...

Page 11: ... tY WoQh ...

Page 12: ......

Page 13: ......

Page 14: ...i sr V shynl s G G G G G ov hyt jvsk hwGjvsk O Ptlkp t OTTTPsv OˍPuvGzwpu olh uvyths spno jv vuV uvyths j SG SG S SG SG S G ov hyt jvsk hwGjvsk O Pl yhGopno O Popno O Ptlkp t OTTTPsv OˍPuvGzwpu olh uvyths spno wlytU wylzz k G V S T G S V G SG Z W ov hyt jvsk hwGjvsk O Popno O Ptlkp t OTTTPsv OˍPuvGzwpu olh uvyths spno klspjh lz k G V S SG G G X hyt jvsk hwGjvsk O Ptlkp t OTTTPsv OˍPuvGzwpu olh uvy...

Page 15: ... to prevent unwanted use of the washer or to keep cycle settings from being changed while the washer is operating Press and hold the PREWASH button for 3 seconds to activate or deactivate the child lock function The child lock indicator will be shown in the display and all buttons are disabled except the ON OFF button NOTE CHILD LOCK lasts after the end of cycle If you want to deactivate this func...

Page 16: ...only the drum rotates If water temperature becomes lower than selected because of re supplied water the heating starts again 7 Washing Fuzzy logic decides washing time according to the laundry load water temperature and other factors 8 Drainage A pump motor drains the water from the drum After sensing drained water amount by water level frequency spin starts When a heating course is selected stay ...

Page 17: ...supply Water supply for rinse process E Rinse Rinsing process F Last drainage After spin finishes and power is not supplied to motor the drum rotates by remaining spin power If rinse hold is selected the drainage is not proceeded after rinse finishes G Disentangling The same as item 9 H Intermittent spin The same as item A I Main spin1 The same as item B J Main spin2 At the end of a main spin the ...

Page 18: ......

Page 19: ... _ Z ...

Page 20: ...n repeatedly to cycle through the test modes None 1 time 2 times 3 times 4 times 5 times 6 times 7 times 8 times 9 times 10 times 11 times 12 times 13 times 14 times 15 times Turns on all lamps and locks the door Tumble clockwise Low speed Spin High speed Spin Inlet valve for prewash turns on Inlet valve for main wash turns on Inlet valve for hot water turns on Inlet valve for steam turns on Inlet...

Page 21: ...use Electro Static Discharge plastic pack when delivering or keeping it ERROR SYMPTOM CAUSE WATER INLET ERROR Correct water level 24 6kHz is not reached within 8 minutes after water is supplied or it does not reach the preset water level within 20 minutes 1 UNBALANCE ERROR The load is too small The appliance is tilted Laundry is gathered to one side Non distributable things are put into the drum 2...

Page 22: ...e MOTOR HARNESS and 4 pin female white connector in the MAIN PWB ASSEMBLY is bad or unstable The MOTOR HARNESS between the STATOR ASSEMBLY and MAIN PWB ASSEMBLY is cut open circuited The hall sensor is out of order defective 8 EEPROM is out of order Displayed only when the START PAUSE button is first pressed in the Load Test Mode 9 POWER FAILURE After the power supply is stopped while washing mach...

Page 23: ......

Page 24: ... y G pusl G hs l hzzltis U p G G G G G G GXYWG Ghjf Oj G G G G pusl G hs lGhzzltis G G G G UP y G pusl G hs l hzzltis U u p G G G G thpuGw iG G G T fOuhYSGuh SGisZP y G G U u p Gl G f Oy G G T G G P y G thpuGohyulzzU u u h G G S G G G G GY U G o f y G GthpuGw i hzzltis U u Gl G G G XP u G G G YP u G G G ZP u G G G G G P u G G P u G G G G G G G G G G G G G G PGu G G G G j G wylzz yl z p joU u u _T ...

Page 25: ...2 pin1 BL3 pin1 After remove Terminal Position Assurance TPA of connector check as follows Pump running 120V 5 Stopped Motor Pump 0 1V Method 1 Press the Power button while the SPIN SPEED button and SOIL LEVEL button is pressed simultaneously 2 Press Start Pause button 1 time Pump slow speed running 2 times Pump mid speed running 3 times Pump high speed running 4 times Stop the Motor Pump Note Env...

Page 26: ...gnet cracked Hall sensor Motor Drive Hall Sensor part of wire part of motor Motor Yes No Yes Yes Magnet Replace the STATOR Is the resistance values in the range of 5 to 15 U V V W W V U 1 V 2 W 3 After pull out the RD4 connector check the terminal of the connector in wire Red 3P male No Replace the Hall sensor Is hall sensor out of order Refer to 9 3 Stator assembly Hall sensor Yes No Replace the ...

Page 27: ...t the cycle Replace the PCB ASSEMBLY No Is DOOR SWITCH ASSEMBLY broken Replace the DOOR SWITCH ASSEMBLY No Yes Does the spring of Latch Hook actuate Replace Door Assembly Yes No Note Environmental check list 1 The machine must operate with all the doors completely closed and locked 2 The washing area must operate with a water temperature not higher than 45 Celsius and must not have more amount of ...

Page 28: ...ry evenly In the DRUM assembly Yes Is the washing machine installed at an angle Adjust the height of washing machine to be kept horizontally Yes No Is displayed Yes When you press both WASH RINSE button and DELAY WASH button simultaneously is the water level frequency over 21 3kHz Check the AIR CHAMBER and the tube clogged No Does the inlet valve work when the power is not applied Replace the INLE...

Page 29: ...d Reconnect or repair the connector No No Yes Is the resistance of the pressure sensor out of range pin 1 pin 3 21 23 10 Replace the pressure switch No Yes Is the AIR CHAMBER and the tube clogged Replace the MAIN PWB assembly Fix the air chamber and remove the foreign material Yes Is PE ERROR displayed ...

Page 30: ...e circuit breaker Yes No Is the current rating of multi outlet power strip enough Avoid connecting several electric devices Is the supplied voltage 120V AC 10 15 Alternate with explanation Yes Yes No Is the connector connected to PCB Noise filter disconnected or disassembled Reconnect or repair the connector No Replace the MAIN PWB ASSEMBLY Yes No Is LED on while the power is on Replace the DISPLA...

Page 31: ...WB Display PWB disconnected or disassembled Reconnect or Repair the connector Yes Is the display PCB broken check the buzzer sound and LED light while push the button Replace the DISPLAY PWB ASSEMBLY Yes Is the button of panel stuck Repair the button Yes No No ...

Page 32: ...nd start QC test mode and run in high spin Refer to section 7 2 When the machine is spinning in high speed verify that it is stable If you do not have the unbalance part put 4 5 to 6 5 lbs 2 to 3 kg of clothing Once loaded press power Rinse Spin and the start pause button in sequence When the machine is spinning in high speed verify that it is stable If it is not stable adjust feet accordingly Aft...

Page 33: ...C 3OFTENER OMPARTMENT 0REWASH OMPARTMENT AIN 7ASH OMPARTMENT S THE DETERGENT CAKED OR HARDENED S WATER SUPPLIED HECK THE WIRING u RE RECEPTACLES CORRECTLY CONNECTED TO THE TERMINALS OF THE 4 6 6 33 9 0UT THE DETERGENT IN THE CORRECT PLACE LEAN THE DISPENSER u w G t G ETERGENT 0REWASH OT WATER AIN WASH 3TEAM LEACH LIQUID DETERGENT SOFTENER BLEACH DOES NOT FLOW IN ...

Page 34: ...34 ABNORMAL SOUND ...

Page 35: ...5 TXUGmps lyGhzzltis GOspulGmps lyP U jvtwvulu G lz punGpumvyth pvu Gy GOv PG G Gj SG G G G G G G S G G G G U hyupun j G G GthpuGw iGVG Gk y Gw y oGOXPG GykGOZP oGOZPG GykGOXP W W OZP OXP oX OZP OXP ykX ...

Page 36: ...ough terminal 3 4 PTC solenoid will make the door locked Door lock is detected when switches in terminal 4 5 are set closed CAM rotation will forcibly clear off the connection The maximum allowable number of impulse authorizations is 2 Upon the third authorization of the impulse the position of CAM goes back to the door open position Authorizing the impulse occurs in 4 5 seconds upon input for max...

Page 37: ...37 Test points Result Test Points 2 to 4 3 to 4 4 to 5 2 to 4 Result 700 1500 60 90 Infinity 120 Vac Remarks At 77 F 25 C At 77 F 25 C Voltage Input 2 3 4 5 ...

Page 38: ... 2 3 4 1 2 3 4 Hb Function Test points Windings Result Windings 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 There are no brushes to wear out Unlike a more traditional brushless motor the rotor surrounds the stator rather than being attached to it Test Points Re...

Page 39: ...o the Hall Sensor use the following steps 1 Unplug power cord 2 Remove rear washer panel 3 Locate Hall sensor connector on the stator behind the rotor 4 Place meter leads on terminals 5 to 4 white to gray 5 Plug in power cord close door and press power button DO NOT PRESS START 6 You should measure 10 to 15 VDC If 10 to 15 VDC is present control board white wire and gray wire are OK If not follow ...

Page 40: ...s but does not pulse or change Hall sensor has failed and must be replaced IF zero 0 voltage is measured on either test check red blue wires for continuity Repair or replace harness as needed Voltage Testing Hall Sensor from the Main PCB Assembly 7 To measure output signal voltage from the hall sensor carefully move test leads to terminals 1 to 4 blue and gray Slowly rotate motor rotor by hand You...

Page 41: ...hzzltis j G G GthpuGw i Gk thpuGw i uhY X Y Z X Y Z Z Y X Z Y X X Y Z X Y Z isZ zi zi ir iu iu kyhpu w tw ir m y QGl G G G G G G G G G U G G G G G G G G G G G G G GVG G U k Gw k Gw Gw y OXPG GOYP XWTYWG Uw OXPOYP OXP OYP ...

Page 42: ......

Page 43: ...g circuit Wiring diagram MAIN PWB X71 3 4 3 4 3 4 3 4 3 4 3 4 X135 X134 BK BL YL RD GY BL BK BK Vac WASH HEATER STEAM GENERATOR HEATER YL l z m l z m m G y XU G G G G G G G G G G G G G G G G G U YU G G G G G G G G G G G U Go z Gn Go Go z Gn Go Gw y OXPG GOYP XYTX_G7 Gw y OXPG GOYP XYTX_G7 OXP OYP OYP OXP ...

Page 44: ...44 T UG olytpz vyGhzzltis Circuit in the MAIN PCB Wiring Diagram thpuGw i tpjvt uhZ is X Y X Y o o hzo olytpz vy X Y Z X y y y y j j j j Y Z m G GO G PG G G G G G G G G G G U G OYP OXP ...

Page 45: ... C At 158 F 70 C At 203 F 95 C At 221 F 105 C Steam generator Thermistor Test Points 1 to 2 Result tolerance 5 39 5 kΩ 26 1 kΩ 12 1 kΩ 8 5 kΩ 3 8 kΩ 2 8 kΩ 2 1 kΩ 1 4 kΩ 1 0 kΩ 0 7 kΩ 0 4 kΩ Remarks At 86 F 30 C At 104 F 40 C At 140 F 60 C At 158 F 70 C At 203 F 95 C At 221 F 105 C At 241 F 116 C At 266 F 130 C At 293 F 145 C At 320 F 160 C At 356 F 180 C ...

Page 46: ...connect the Display PWB assembly connector from the cabling 4 Pull out the drawer and unscrew 2 screws 5 Remove one screw 6 Lift the side the control panel assembly and pull it out 7 Unscrew the 8 screws from the control panel assembly 8 Disassemble the display PWB assembly DISPLAY PWB ASSEMB LY TOP PLATE ASSEMBLY CONTROL PANEL ASSEMBLY DRAWER CONTROL PANEL ASSEMBLY 10 DISASSEMBLY INSTRUCTIONS ...

Page 47: ...AIN PWB ASSEMBLY Disconnect the POWER connector and the pressure switch assembly Remove the protective cover Unscrew 1 screw on the back Remove the main PWB Disconnect the connectors PROTECT COVER 1 2 3 4 5 ...

Page 48: ... or three connectors from the noise filter Unscrew a screw from the top bracket Unscrew the clamp nut at the lower part of the dispenser Unscrew 2 screws from the back of the cabinet Disassemble the 4 connectors from the valves Wire Color Blue Housing YL BK Red Housing VT BK White Housing WH BK Blue Housing GY BK Red Housing BL BK 1 2 3 4 5 DRAWER 1 3 2 4 5 6 1 2 ...

Page 49: ...s from upper of the cabinet cover Unscrew the screw from filter cover Put a flat screwdriver or putty knife into the hinge slots at the bottom of the cover and pry it out Unscrew the screw from the lower side of the cabinet cover 1 2 3 4 ...

Page 50: ...embly Tilt the cabinet cover Disconnect the door switch connector Disassemble the clamp assembly Disassemble the gasket Lift and separate the cabinet cover NOTE When assembling the CABINET COVER connect the door switch connector 5 6 7 8 9 10 11 ...

Page 51: ...rews from the hinge Use the 8mm tool DOOR LOCK SWITCH ASSEMBLY Open the door and disassemble the CLAMP ASSEMBLY Unscrew the 2 screws Disassemble the door upward NOTE Reconnect the connector after replacing the DOOR SWITCH ASSEMBLY 1 3 1 2 2 ...

Page 52: ...w tw k G G G U z G G G SG G SG G G G G G U k G G G U jpyj sh pvu ovzl w twGovzl ilssv z X Y Z oluGmvylpnuGviqlj GpzGz jrGil lluGky tGhukG i k G G G U z G G G G G U y G G G GO SG SG UP G G G G G G G U X Y Z ...

Page 53: ...hem they can be re used Bolt Rotor DAMPER HINGE DAMPER Disassemble the back cover Remove the bolt Pull out the rotor 1 2 3 Unscrew the 2 screws from the tub bracket Remove the 6 bolts on the stator Unplug the 2 connectors from the stator 1 2 3 Disassemble the damper hinges from the tub and base 1 ...

Page 54: ...A110 A150 A154 A140 A310 A300 A200 A155 A440 A430 A100 A101 A133 A130 A151 A153 A131 A201 A220 F110 F215 F210 A105 A106 A104 A102 A103 A390 A141 11 1 CABINET CONTROL PANEL ASSEM B LY 11 EXPLODED VIE W A410 A111 A303 A152 ...

Page 55: ...K105 K190 K115 K141 K117 In case of replacing THERMISTOR of HEATER ASSEMBLY K320 replace HEATER ASSEMBLY K320 HEATER ASSEMBLY K320 includes THERMISTOR In case of replacing BEARING BALL K121 K122 and GASKET K125 replace TUB ASSEMBLY OUTER K105 TUB ASSEMBLY OUTER K105 includes BEARING BALL K121 K122 and GASKET K125 K572 K570 K195 K125 K121 K340 F145 K361 K122 ...

Page 56: ...37 11 3 DISPENSER ASSEMBLY F300 F227 F220 F225 F430 F170 F160 F120 F130 F432 F226 F323 F462 F322 F321 A275 A276 HOT RED COLD BLUE Inlet Valve Filter SVC COLD BLUE HOT ORANGE F441 ...

Page 57: ...q UYWXY ...

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