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Daewoo DWF-178L, Service Manual

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Daewoo DWF-178L Service Manual Download Page 24

TROUBLE SHOOTING GUIDE

23

PROBLEM

WATER 

SUPPLY IS 

NOT STOPPED.

CHECK POINT

Does the water supply
continue while the power
is turned off?

Does the water supply start
as soon as you press the
power switch?

Operate the washer after
setting the water level to
“HIGH”

Does the water supply
continue after the water
reaches to the “HIGH”
level?

Is the air tube of water
level switch kinked or
deformed?

CAUSE

SOLUTION

Change the water inlet
valve.

The water inlet valve is
defective.

The triac of P.C.B is
defective.

Change the P.C.B
ASS’Y.

Normal operation.

Change the air tube.

Air tube is defective.

Change the pressure
switch.

Pressure switch is
defective.

PROBLEM

THE

PULSATOR

DOES NOT

ROTATE

EVEN IF THE

WATER IS

SUPPLIED.

CHECK POINT

Does the motor operate after
finishing water supply?

Does the motor make
operating sound?

Is the connection
condition of capacitor
terminal good?

Does pulsator rotate in
only one direction?

Is the  motor coil
disconnected?

Is the V-belt worn out?

The triac of P.C.B is
defective.

Motor is defective.

Improper connection.

V-belt is defective.

Change the P.C.B
ASS’Y.

Normal

Change the motor.

Connect the terminal
properly.

Change the V-belt.

Change the motor.

CAUSE

SOLUTION

YES

YES

YES

NO

NO

YES

YES

NO

YES

YES

YES

NO  

YES

NO  

NO

NO

NO

NO

YES

CONCERNING WASHING

Summary of Contents for DWF-178L

Page 1: ...In this Manual some parts can be changed for improving their performance without notice in the parts list So if you need the latest parts information please refer to PPL Parts Price List in Service Information Center http svc dwe co kr DAEWOO ELECTRONICS CORP http svc dwe co kr Oct 2011 ...

Page 2: ...CIFICATIONS 2 2 STRUCTURE OF THE WASHING MACHINE 3 3 DIRECTIONS FOR INSTALLATION AND USE 4 INSTALLATION OF THE COVER UNDER 4 HOW TO INSTALL ON AN INCLINED PLACE 4 HOW TO CONNECT THE INLET HOSE 5 HOW TO CLEAN THE FILTER 6 4 FEATURE AND TECHNICAL EXPLANATION 7 FEATURE OF THE WASHING MACHINE 7 WATER CURRENT TO ADJUST THE UNBALANCED LOAD 7 FUNCTION FOR SOAK WASH 7 AUTOMATIC WATER SUPPLY SYSTEM FOR BLA...

Page 3: ...gf cm2 2 94N cm2 78 4N cm2 9 REVOLUTION WASH 130 150 rpm 60Hz 125 140 rpm 50Hz PER MINUTE SPIN 710 740 rpm 60Hz 640 675 rpm 50Hz 10 PULSATOR TORNADO PULSATOR with 4 WINGS ø 376mm 11 WATER LEVEL CONTROL ELECTRONIC SENSING 12 GEAR MECHANISM ASS Y HELICAL GEAR 13 LINT FILTER O 14 SOFTENER INLET O 15 FUNCTION FOR TIME DELAY O OPTION RESERVATION 16 ALARM SIGNAL O 17 RESIDUAL TIME DISPLAY O 18 AUTOMATIC...

Page 4: ...y not include all features HOT WATER TAP After using the washer close the water tap In case of the single valve model there is no hot water valve COLD WATER TAP After using the washer close the water tap BLEACH INLET SOFTENER INLET DETERGENT CASE GROUND WIRE In case of 3 wire power cord ground wire will not be provided POWER CORD LINT FILTER CONTROL PANEL POWER SWITCH PULSATOR ADJUSTABLE LEG COVER...

Page 5: ...n an unsuitable floor it could make considerable noise and vibration INSTALLING PLACE Never install in these places 2Push the noise insulation plate into the end which decrease the noise made by this washer 1The packing box opened there is a noise insulation plate Put the noise insulation plate at the bottom of the back 2Check the Horizon Status Check the position of tub above the center of the wa...

Page 6: ...king can stick to the water tap tightly HOW TO CONNECT THE INLET HOSE Be careful not to mistake in supplying between the hot maximum 50 C and cold water In using only one water tap or in case of attached one water inlet valve connect the inlet hose to the cold water inlet valve Do not over tighten This could cause damage to couplings FOR SCREW SHAPED TAP 3Insert the inlet hose adapter into the wat...

Page 7: ...er is not cleaned at proper time every 10 times of use Drain problem could be caused 3Return the filter as it was and insert the filter frame into the slot 1Pull the Filter frame upward 2Turn the lint filter inside out wash to the lint off with water 1Put down the remained water in the hose And put a container under the filter to collect water 2Turn the cap counter clockwise 3Pull out the filter a...

Page 8: ...o adjust the unbalanced load 7 One touch operation system WATER CURRENT TO ADJUST THE UNBALANCED LOAD It is a function to prevent eccentricity of the clothes after wash by rotating pulsator C W and C C W for 35 seconds But the DELICATE course have no operation of the water currents to adjust the unbalnced load EFFECT It reduces vibration and noise effectively while spinning WATER FLOW FUNCTION FOR...

Page 9: ...air is dispersed by the rotation of pulsator Air bubble is created by the centrifugal force and rises up Draining Good draining The washer begins spin process after drainage condition Bad draining Draining time is prolonged No draining Program is stopped and gives the alarm Drain Time Movement of the Program Less than Continue draining 15 minutes More than Program stops and gives the alarm with bl...

Page 10: ...he safety switch due to the serious vibration and the spin process is interrupted 3 In case that P C B ASS Y gets OFF signal from the safety switch spin process are stopped and rinse process is started automatically by P C B ASS Y 4 If the safety switch is operated due to the unbalance of the tub the program is stopped and the alarm is given CIRCULATING WATER The washing and rinsing effects have b...

Page 11: ...cording to process When operation is finished the TIME INDICATOR will light up STRUCTURE FUNCTIONAL PRINCIPLE 1 When the DRAIN MOTOR connected to the power source the DRAIN MOTOR rotates with 900 r p m and revolves the pulley by gear assembly for reducing 2 When the pulley is rotated the pulley winds the wire to open the drain valve 3 Therefore rotation of pulley changed to the linear moving of wi...

Page 12: ... sized clothes Planetary gear Sun gear Internal gear Pulsator 1 revolution 5 revolutions Gear pulley V belt Gear unit as Motor Motor 1800 r p m 60Hz 1500 r p m 50Hz Gear Unit as Directly V BELT Tub 710 740r p m 60Hz 640 675r p m 50Hz Pulsator 130 150r p m 60Hz 125 140r p m 50Hz Spinner Pulley 710 740r p m 60Hz 640 675r p m 50Hz GEAR MECHANISM ASS Y ...

Page 13: ...ORD FROM THE ELECTRIC OUTLET Warning 1 Raise the top plate on the outer cabinet 2 Loosen four screws mounting outer tub cover and remove outer tub cover from the tub ass y 4 Loosen the pulsator mounting screw and remove the pulsator 3 Remove the cap pulsator from the pulsator ass y by using screw driver 5 Remove the special nut by using T type box wrentch 6 Remove the special washer GEAR MECHANISM...

Page 14: ...bly procedure NOTES 7 Remove the tub i assy q Remove four special bolt of gear mechanism assy by using a box wrentch 8 Lay the top of the washer on the floor 9 Remove four special bolts of gear protect by using a box wrentch and remove gear protect 0 Remove the V belt w Pull out the gear mechanism ass y ...

Page 15: ...MODEL 1 Lay the top of the washer on the floor 2 Loosen two special screw of drain motor 5 Turn the valve by using screw driver as shown in picture 3 Take out the wire of drain motor from the bracket 4 Separate the drain motor from the base 6 Remove the valve lid from the valve drain ass y ...

Page 16: ...PRING PROBLEM THE REPAIR METHOD 15 TOOL FOR REPLACING THE CLUTCH BOSS ASSEMBLE Tool name Specification Q ty Fixing jig 1 Ratchet handle 1 Socket and extension bar socket 10mm 17mm per each Some cotton yarn some THE STRUCTURE OF GEAR MECHANISM Figure 1 ...

Page 17: ... PROCESS AND CAUSE SHORT OF SPIN PERFORMANCE CHECKING METHOD IN THIS CASE YOU MUST EMPTY THE SPIN TUB FIRST 1 TO CHECK THE REVOLUTION OF SPIN TUB IF THE SPIN TUB DOES NOT REVOLVE AND ONLY THE PULSATOR IS TURNING THAT IS CLUTCH SPRING DEFECT 2 TO CHECK THE SPIN SPEED RPM BETWEEN SPIN TUB AND PULSATOR IF YOU FIND THE DIFFERENT SPIN SPEED BETWEEN SPIN TUB AND PUSATOR THIS IS ALSO CLUTCH SPRING DEFECT...

Page 18: ...point Remove the protector Remove the v belt Loosen the fastening nut Disassemble the spring washer Use wrench or driver ratchet handle extension bar socket 10mm Use fixing jig for pulley as to see fig 1 and 17mm socket for nut Take out plain washer if it has THE PROCESS OF DISASSEMBLE ...

Page 19: ...e clutch boss assembly Separate coupling from clutch boss ass y Cleaning Catch the boss and pull upward with spiral rotate in the clockwise direction Clean the drum plate coupling surface and contact face between drum plate and coupling It is necessary to keep cotton piece goods being dry and clean ...

Page 20: ...ng washer Check the uneven face of coupling is assembled upward Push in the clutch boss ass y with rotating on the clockwise direction After assembling rotate on the clockwise more 2 3 teeth and pull out the pulley shaft upward If there was plain washer you have to assemble plain washer the first and then assemble spring washer THE PROCESS OF ASSEMBLE ...

Page 21: ... as if disassembling as fastening torque about 100 200kgf cm Check the end play up and downward and check the binding force too much or not on bi direct of rotation Finally check the distance between brake lever and control bolt 2 3mm Also check the interferance depth both clutch tip and clutch boss 3 5 4 5mm Clutch Tip Drain Valve Synchronous Motor 3 5 4 5 keep distance 2 3mm ...

Page 22: ...e drain motor 5 Separate the drain hose i from the case filter ass y 6 Separate the cavitation hose from the case filter ass y 7 Assemble the case filter ass y that purchased 8 Tie up three screws 9 Tie up two screws 0 Assemble the hose drain I to the case filter with bond clamp q Assemble the cavitation hose to the case filter with bond clamp w Assemble the back cover to the washing machine ...

Page 23: ...fective Lead wire is defective SOLUTION Change water inlet valve Open the water tap Clean the filter Increase the water pressure Connect the connector or the terminal properly Change the P C B AS Change the lead wires NO YES NO YES NO YES YES YES YES NO NO NO NOTE Open the water tap fully and measure the flow rate From the upper results you know that the flow rate more than 11 5ℓ min is essential ...

Page 24: ...operation Change the air tube Air tube is defective Change the pressure switch Pressure switch is defective PROBLEM THE PULSATOR DOES NOT ROTATE EVEN IF THE WATER IS SUPPLIED CHECK POINT Does the motor operate after finishing water supply Does the motor make operating sound Is the connection condition of capacitor terminal good Does pulsator rotate in only one direction Is the motor coil disconnec...

Page 25: ...e drain motor The drain motor is defective YES NO Is the output voltage of the drain motor normal Change the P C B ASS Y P C B ASS Y is defective THE WASHER DOES NOT DRAIN PUMP MODEL Install the drain hose properly Improper installation NO YES Do you install the drain hose properly Remove the foreign matter from the pump housing Malfunction of drainage by the foreign matter YES NO Is the foreign m...

Page 26: ...acitor terminal good CAUSE SOLUTION Close the lid Change the door switch Change the safety switch Connect the connector properly Change P C B ASS Y Change the drain motor Change the P C B ASS Y Change the V belt Change the motor Connect the terminal correctly Change the P C B ASS Y Door switch is defective Safety switch is defective Improper connection of the connector P C B ASS Y is defective Dra...

Page 27: ...ASS Y Is the strange noise generated when the pulsator rotates in TEST MODE of P C B ASS Y Is the V belt worn out CAUSE SOLUTION Connect the plug Change P C B ASS Y Change Fuse Connect the connector properly Change P C B ASS Y Change P C B ASS Y Press START HOLD button Replace P C B ASS Y Change the pressure switch Change P C B ASS Y Remove the foreign matter Change the V belt Power button is defe...

Page 28: ...The safety switch is inferior The load sensing is inferior After the load sensing operates about 7 seconds the message is displayed during 0 5 second and water level is always fixed high The water level sensing is inferior Install drain hose properly Remove foreign matter from drain hose Change drain motor or drain pump Open the water tap Clean the water inlet filter Check whether or not is comes ...

Page 29: ...APPENDIX WIRING DIAGRAM 28 WIRING DIAGRAM 110V NON PUMP COLD ONLY POWER CORD 110V FUSE RD BL WH YW CONDENSOR COLD VALVE MAIN FRONT PCB ASS Y MOTOR MOTOR DRAIN PRESSURE SENSOR SAFETY SWITCH VT ...

Page 30: ...WIRING DIAGRAM 29 WIRING DIAGRAM 220V PUMP COLD HOT WH PUMP DRAIN HOT VALVE MAIN FRONT PCB ASS Y POWER CORD 220V FUSE RD BL WH YW CONDENSOR COLD VALVE MOTOR MOTOR DRAIN PRESSURE SENSOR SAFETY SWITCH VT ...

Page 31: ...WIRING DIAGRAM 30 WIRING DIAGRAM 220V PUMP COLD ONLY WH PUMP DRAIN MAIN FRONT PCB ASS Y POWER CORD 220V FUSE RD VT BL WH YW CONDENSOR COLD VALVE MOTOR MOTOR DRAIN PRESSURE SENSOR SAFETY SWITCH ...

Page 32: ...PARTS DIAGRAM 31 PARTS DIAGRAM LEFT TOP FRONT ...

Page 33: ...PARTS DIAGRAM 32 LEFT TOP FRONT ...

Page 34: ...PARTS DIAGRAM 33 C14 C07 C14 C01 C02 C06 C08 C10 C13 C11 C12 C15 C09 C04 C05 C16 C17 C22 C23 C25 C24 C26 C27 C28 C30 C31 C29 C32 C33 C21 C19 C18 C20 C20 C03 LEFT TOP FRONT ...

Page 35: ...C64 DWF 178L LARGE PCB CHILE PERU PRPSSWXC69 DWF 178L LARGE PCB PANAMA A17 HARNESS AS 3612797A30 DWF 178W 110V COLD NON PUMP 1 3612797A40 DWF 178W 220V COLD HOT PUMP 3612797A70 DWF 178W 220V COLD PUMP A18 SPRING DOOR L 3615118800 DWF 178 1 A19 SPRING DOOR R 3615118801 DWF 178 1 A20 DOOR BACK O 36117ADT00 DWF 178L ABS 1 36117ADT10 ABS DECORATOR SPRAY 178L A21 DOOR GLASS 36117AE000 GLASS 178L 470X21...

Page 36: ...3G6 1 B08 SUPPORTER TUB FR 3615302901 FRPP 5203G6 1 B09 SUPPORTER TUB FL 3615302911 FRPP 5203G6 1 B10 COVER B 3611414010 372 508 0 4T SGCC 1 B11 SCREW TAPPING 7112401011 T1 TRS 4 10 MFZN 4 B12 HANDLE CABINET 3612603300 PP 2 B13 CABINET SUB AS 3610809501 PAINTING 0 6 1 B14 BASE U 3610388300 PP 1 B15 LEG ADJUST AS 3617702123 BUTYL FOOT CONE SHAPE 2 B16 FOOT 3612100330 BUTYL VE SMALL 2 B17 SCREW TAPP...

Page 37: ...3615408400 1098 s VE TYPE 1 C20 HOSE DRAIN INNER AS 3613218510 LDPE EVA L 210 5 1 HOSE DRAIN I 3613212120 EVA L 184 C21 BASE 3610387400 SECEN 2 0T 1 C22 HARNESS EARTH INNER 3612757010 L 560MM 1 C23 DRAIN MOTOR 36196TAN30 SV HJ7T22D 100 110 50 60HZ 1 36196TAN00 SV MX7T22D 220V50 60HZ C24 SPECIAL SCREW 3616007001 SCM24H 6 5 24 101S 16 C25 GEAR MECHANISM 3617310400 GM 1000 YJ6P2 1 C26 BOLT HEX 734180...

Page 38: ...CIRCUIT DIAGRAM 37 CIRCUIT DIAGRAM 110V NON PUMP COLD ONLY ...

Page 39: ...CIRCUIT DIAGRAM 38 CIRCUIT DIAGRAM 220V PUMP COLD HOT ...

Page 40: ...CIRCUIT DIAGRAM 39 CIRCUIT DIAGRAM 220V PUMP COLD ONLY ...

Page 41: ...S M NO DAEWOO ELECTRONICS CORP 1 2 Jeo dong 1 il ga Jung gu Seoul Korea C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC PRINTED DATE Oct 2011 ...

Page 42: ...UT THIS MANUAL ABOUT THIS MANUAL 담 당 민가영 님 M O D E L DWF 178L DWF 178M 178W DWF 179M 179W S M 접 수 2011 10 04 M E M O 총 41p 연락처 VISION 담 당 방 문 수 TEL 730 0660 FAX 730 3788 11 10 04 전체신규 41p 11 10 05 1p 2p 9p 24p 28p 29p 30p 31p 32p 33p 34p 36p 수정_ 신규 12p 11 10 10 2p 3p 34p 수정_ 신규 3p ...

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