Samsung WA5451AB Series User manual

WASHING MACHINE (TOP-LOADING) CONTENTS
SERVICE Manual
WASHING MACHINE
TOP-LOADING TYPE
Model Name : WA5451AB*
(ORCA PROJECT)
Model Code : WA5451ABW/XAA
Refer to the service manual in the GSPN (see the rear cover) for the more information.
1. Safety Instructions
2.FeaturesandSpecications
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram
6. Wiring Diagram
7. Schematic Diagram
WA5451*

CONTENTS
1. Safety instructions ...................................................................1
1-1. Safety instructions for service engineers ...............................................1
2. FeaturesandSpecications ...........................................................5
2-1. Features ........................................................................5
2-2. Specications ....................................................................6
2-3. Detailfeatures ...................................................................7
2-4. Optionsspecications .............................................................8
3. DisassemblyandReassembly .........................................................9
3-1. Tools for disassembly and reassembly ................................................9
3-2. Standarddisassemblydrawings ....................................................10
4. Troubleshooting ....................................................................19
4-1. Error modes ....................................................................19
4-2. Corrective actions for each error code ................................................22
5. PCB diagram.......................................................................27
-1. Main PCB ......................................................................
-2. Detailed Manual for Connector and Relay Terminal Part (Main PCB) . . . . . . . . . . . . . . . . . . . . . . . .
-3. SubPCB ......................................................................
-4. Detailed Manual for Connector Terminal Part (Sub PCB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
-5. DSPPCB......................................................................
-6. Detailed Manual for Connector Terminal Part (DSP PCB) .................................
6. Wiring diagram .....................................................................33
-1. Wiring diagram (WA5471* / WA5451*). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7. Schematicdiagram ................................................................. 34
-1. Main control (WA5471* / WA5451*) ..................................................
-2. Sub control (WA5471* / WA5451*). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
-3. DSP control (WA5471* / WA5451*) .................................................

Safety Instructions _ 1
1. SAFETY INSTRUCTIONS
1-1. SAFETY INSTRUCTIONS FOR SERVICE ENGINEERS
► Besuretoobservethefollowinginstructionstooperatetheproductcorrectlyandsafelytopreventpossibleaccidents
and hazards while servicing.
► Twotypesofsafetysymbols,WarningandCaution,areusedinthesafetyinstructions.
WARNING
Hazards or unsafe practices that may result in severe personal injury or death.
CAUTION
Hazards or unsafe practices that may result in minor personal injury or property damage.
BEFORE SERVICING
• (Whenservicingelectricalpartsorharnesses)Makesuretodisconnectthepowerplugbeforeservicing.
4 Failingtodosomayresultinariskofelectricshock.
• Donotallowconsumerstoconnectseveralappliancestoasinglepoweroutletatthe
same time.
4 Thereisariskofreduetooverheating.
• Whenremovingthepowercord,makesuretoholdthepowerplugwhenpullingtheplug
from the outlet.
4 Failingtodosomaydamagetheplugandresultinreorelectricshock.
• Whenthewashingmachineisnotbeingused,makesuretodisconnectthepowerplug
from the power outlet.
4 Failingtodosomayresultinelectricshockorreduetolightning.
• Donotplaceorusegasoline,thinners,alcohol,orotherammableorexplosivesubstancesnearthewashing
machine.
4 Thereisariskofexplosionandrecausedfromelectricsparks.
WARNING

2 _ Safety Instructions
WHILE SERVICING
• Checkifthepowerplugandoutletaredamaged,attened,cutorotherwisedegraded.
4 Iffaulty,replaceitimmediately.
Failingtodosomayresultinelectricshockorre.
• Completelyremoveanydustorforeignmaterialfromthehousing,wiringandconnectionparts.
4 Thiswillpreventariskofreduetotrackingandelectricalhazard..
• Whenconnectingwires,makesuretoconnectthemusingtherelevantconnectorsandcheckthattheyare
completely properly.
4 Iftapeisusedinsteadoftheconnectors,itmaycausereduetotracking.
• MakesuretodischargethePBApowerterminalsbeforestartingtheservice.
4 Failingtodosomayresultinahighvoltageelectricshock.
• Whenreplacingtheheater,makesuretofastenthenutafterensuringthatitisinsertedintothebracket-heater.
4 Ifnotinsertedintothebracket-heater,ittouchesthedrumandcausesnoiseandelectricleakage.
AFTER SERVICING
• Checkthewiring.
4Ensure that no wire touches a rotating part or a sharpened part of the electrical harness.
• Checkforanywaterleakage.
4 Performatestrunforthewashingmachineusingthestandardcourseandcheckwhetherthereisanywater
leakagethroughtheoorsectionorthepipes.
• Donotallowconsumerstorepairorserviceanypartofthewashingmachine
themselves.
4This may result in personal injury and shorten the product lifetime.
• Ifitseemsthatgroundingisneededduetowaterormoisture,makesuretorun
grounding wires.
(Checkthegroundingofthepoweroutlet,andadditionallygroundittoametallicwater
pipe.)
4 Failingtodosomayresultinelectricshockduetoelectricleakage.
[Running a grounding wire]
- Twist a grounding wire (copper wire) two or three times around the tap.
- Ifyouconnectthegroundingwiretoacopperplate,buryit75cmundertheearthina
place with a lot of moisture.
 Donotconnectthegroundingwiretoagaspipe,plasticwaterpipeortelephone
wire.Thereisariskofelectricshockorexplosion.
75 cm
Copperplate
WARNING
WARNING
Grounding
terminal

Safety Instructions _ 3
BEFORE SERVICING
• Donotsprinklewaterontothewashingmachinedirectlywhencleaningit.
4 Thismayresultinelectricshockorre,andmayshortentheproductlifetime.
• Donotplaceanycontainerswithwateronthewashingmachine.
4 Ifthewaterisspilled,itmayresultinelectricshockorre.Thiswillalsoshortenthe
product lifetime.
• Donotinstallthewashingmachineinalocationexposedtosnoworrain.
4 Thismayresultinelectricshockorre,andshortentheproductlifetime.
• Donotpressacontrolbuttonusingasharptoolorobject.
4 Thismayresultinelectricshockordamagetotheproduct.
WHILE SERVICING
• Whenwiringaharness,makesuretosealitcompletelysonoliquidcanenter.
4 Makesurethattheydonotbreakwhenforceisexerted.
• Checkifthereisanyresiduethatshowsthatliquidenteredtheelectricpartsorharnesses.
4 Ifanyliquidhasenteredintoapart,replaceitorcompletelyremoveanyremainingmoisturefromit.
• Ifyouneedtoplacethewashingmachineonitsbackforservicingpurposes,placeasupport(s)ontheoorandlayit
downcarefullysoitssideisontheoor.
4Do not lay it down on its front. This may result in the inside tub damaging parts.
CAUTION
CAUTION

4 _ Safety Instructions
AFTER SERVICING
• Checktheassembledstatusoftheparts.
4 Nowisagoodtimetoinspectyourwork.Reviewallconnectionsandwiring,includingmountinghardware.
• Checktheinsulationresistance.
4Disconnect the power cord from the power outlet and measure the insulation resistance between the power plug
andthegroundingwireofthewashingmachine.Thevaluemustbegreaterthan10MΩwhenmeasuredwitha
500V DC Megger
• Checkwhetherthewashingmachineisleveltheoorwithrespecttotheoriginalposition
of the washing machine prior to service.
By doing this now will reduce for the need of customer dissatisfaction and redo call.
4Vibrations can shorten the lifetime of the product.
CAUTION

FeaturesandSpecications_5
2. FEATURES AND SPECIFICATIONS
2-1. FEATURES
Features Description
VRT®
(Vibration Reduction Technology)
• ThisSamsungwasherperformssmoothlyattopspinspeeds,minimizing
noise and vibration.
The Largest Capacity • Evenbulkygarmentsandblanketsgetsuperclean.
Thelargecapacityleavesenoughroomforamorethorough,cleanerwash.
PureCycle™
(Tub Cleaning cycle)
• Cleanyourdrumwithonebutton!
This Pure Cycle is specially designed to remove detergent residue & dirt
bulidupinthetub,withouttheneedforspecialchemicaldetergents.
DD Motor
(Direct Drive Inverter Motor)
• Thepowertohandleanything!Ourdirect-driveinvertermotordeliverspower
righttothewashertubfromavariablespeed,reversiblemotor.
Abeltlessdirect-drivemotorgeneratesahigherspinspeedof1,100rpmfor
moreeffective,quietoperation.Thewasheralsohasfewermovingparts,
meaning fewer repairs.
WoolmarkCertied
• ThemachinewashwoolcycleontheSamsungmachineshasbeentested
andpassedtherequiredWoolmarkCompanyspecicationformachine
washable wool products.
Fabrics should be washed according to the instructions on the garment label
asspeciedbyWoolmarkandSamsung.
Tempered Glass Lid • Thetemperedglasslidisdurableandmakesiteasytoseetheinsideof
washer.

6_FeaturesandSpecications
2-2. SPECIFICATIONS
TYPE TOP LOADING WASHER
DIMENSION
(Inches / cm)
A. Height 44.6 " / 1135 mm
B. Width 27 " / 686 mm
C. Height with Door open 57.5 " / 1465 mm
D. Depth 28.6 " / 728 mm
WATER PRESSURE 137~800kpa(20psi~116psi)
WEIGHT 68kg
CAPACITY 5.4 cu.ft
POWER
CONSUMPTION
WASHING 120 V 700 W
WASHING AND HEATING 120 V 1250 W
SPIN 120 V 400 W
DRAIN 120 V 80 W
SPIN REVOLUTION 1100 rpm

FeaturesandSpecications_7
2-3. DETAIL FEATURES
Grade WA5471 * WA5451*
Image
Main Spec
Capacity (IEC) 5.4 5.4
Diamond interior drum yes yes
PureCycle™ yes yes
Washing Cycles 13 11
Internal heater yes yes
VRT® yes yes
Pulsator material STS STS
Maxrpm 1,100 1,100
Motor DD motor DD motor
Design
Color Stainless Platinum Neat White
Center display 88:88 88:88
Jog Dial Grace Same Grace Same
Main display (right side) LED LED
LED color Red Red
Door Lid TC Tempered glass Tempered glass
Easy door (Damping) Yes Yes
Frame VCM (Stainless platinum) PCM
Top Cover Steel (EGI) + painting Steel (EGI) + painting
Energy
MEF(cf/kWh/cycle) 2.5 or more 2.2 or more
WF (gal/cycle/cf) 4.0 or less 4.5 or less
EnergGuide(kWh/year) 200 or less 220 or less

8_FeaturesandSpecications
2-4. OPTIONS SPECIFICATIONS
Item Item Name Code No. Remark
ASSY-HOSE WATER (C) DC97-15648A Default
ASSY-HOSE WATER (H) DC97-15648B Default
HOSE-HANGER DC62-10278A Default
MANUAL-BOOK DC68-03050A Default
Note
• Youcanpurchaseadditionalwatersupplyanddrainhosesfromaservicecenter.

Disassembly and Reassembly _ 9
3. DISASSEMBLY AND REASSEMBLY
3-1. TOOLS FOR DISASSEMBLY AND REASSEMBLY
Tool Type Remarks
Boxdriver 10mm
17mm
Heater(1),Tub(16),Fixerscrew(5),Motor(1),
Balance(5)
Damper(2),Damper(friction1)
Double-ended
spanner
10mm
17mm
Replacedbyboxdriver
Leg
Vice pliers
A Tool for protecting empty turning of bolt or
abrasionfromusingboxdriver
For disassembly of Spin drum
Others
(screwdriver,nipper,
long nose pliers)
Common tools for servicing
JIG for the ASSY SPIN
BASKET

10 _ Disassembly and Reassembly
3-2. STANDARD DISASSEMBLY DRAWINGS
► Thisisastandarddisassemblydiagramandmaydifferfromtheactualproduct.
Use this material as a reference when disassembling and reassembling the product.
Part Figure Description
Sub PCB Assembly
1. Remove the 2 screws holding the control
panel assembly and turn the panel over.
2. Separate the wire connected to the sub PCB.
3. Pull the Encoder-Knob to separate it and
thenremovethe3xingscrews.
 WhenreassemblingthePCB,takecare
that you do not damage the control-panel
xinghook.
AfterreplacingthesubPCB,checkthe
keyoperation.
Main PCB Assembly
1. Separatethecontrolpanel,removethescrew
holdingthePCBcover,andturnthemain
PCB assembly over.
2. Separate the wires connected to the main
PBA.
 Afterreassemblingthehousing,check
if the wires are properly connected.
When disassembling and reassembling
thehousing,takecarethatyoudonot
damage the part.

Disassembly and Reassembly _ 11
Part Figure Description
Water Valve
1. Afterseparatingthecontrolpanel,separate
the water-valve housing.
2. Removethe3xingscrewsandremovethe
screw from the main PCB.
3. Remove the wire-harness and release the 4
clamps connecting the hoses.
 Whenreleasingtheclamps,takecare
that you do not tear the hoses.

12 _ Disassembly and Reassembly
Part Figure Description
DOOR ASSEMBLY
1. Separate the control panel.
2. Separate the water valve housing.
3. Removethe4screwsholdingthebracket
frame.
4. Lift the top cover assembly and leave it at a
slant.
5. Use a pair of pliers to pull down the holder
shaft.
6. Pull the door hinge one side to the left with a
pair of pliers.
7 . Life the door up and separate the door in the
opposite direction of separating the hinge.

Disassembly and Reassembly _ 13
Part Figure Description
Top Cover
Assembly
/ Door Switch
1. Removethe4screwsfromtheframe-bracket
(U/L).
2. Separate the control panel assembly.
3. Separatethewatervalve,themainPBA,the
pressureswitchandthelterEMIhousing.
Separate the housing to prevent stress and
damage to the wire-harness.
4. Separatethemainwirehareness,the
pressureswitchhoseclip,Gndingscrew.
5. Release the bleach hose clamp.
6. Separate the top cover assembly by lifting
the top part of the assembly.
7. youcancheckthedoorswitchIfturnthe
Top cover upsie down
Sensor Pressure
Switch
1. Disassemble the control panel assembly.
2. Separate the pressure switch housing.
3. Beforeseparatingthehose,releasetheclip.
 Whenreleasingtheclip,takecarethatyou
do not tear the hose.

14 _ Disassembly and Reassembly
Part Figure Description
Circulation - Pump
1. Place the frame in such a way that the front
faces left.
2. Disconnectthewirenexttothecirculation
pump.
3. Remove the circulation pump housing.
4. Remove the 6 screws.
5. Separate the pump cover.
MEMS 1. Separate the connector.
2. Remove the 2 screws.
Drain-Pump
1. Separatethebackcover.
2. Separate the pump cover.
3. Remove the 2 screws.

Disassembly and Reassembly _ 15
Part Figure Description
Clutch Assembly
(continued)
1. Remove the 2 screws holding the panel
control Separate all the wires connected to
the housing.
2. Removethe4screwsxingthetub-cover,
releasethehookontheside,andseparate
the tub-cover.
3. Separate the pulsator-cap by inserting the
tip of a (-) screwdriver between the pulsator-
cap and the pulsator and then lifting the
screwdriverup(↑).

16 _ Disassembly and Reassembly
Part Figure Description
Clutch Assembly
(continued)
4. Remove the bolt holding the pulsator with a
10mm wrench.
5. Remove the shaft with the jig wrench.
-Releasethenutinaclockwisedirection.
-Fastenthenutinacounterclockwise
direction.
6. Place the main body so that the front frame
faces upward and remove the 4 bolts holding
the saddle with a 10mm wrench.
 Whenyouplacethewasherontheoor,
takecarethatyoudonotdamageor
scratch the product.

Disassembly and Reassembly _ 17
Part Figure Description
Clutch Assembly
(continued)
7. Remove the bolt holding the DD-motor
housing with a 17mm wrench and then
remove the motor housing.
8. Remove the 6 bolts holding the DD-motor
with a 10mm wrench.
9. Separatethe2markedhousingsandthen
remove the DD-motor.
10.Pressthehooktoseparatethehousing.

18 _ Disassembly and Reassembly
Part Figure Description
Clutch Assembly
(continued)
11. Separate the slide guide and the coupling
by pulling them forward. Disassemble the
coupling and the spring.
12. Remove the 2 screws holding the drain
motor.
13. Remove the 5 screws holding the slide guide
assembly.
14. Remove the 2 screws holding the clutch
motor (10mm bolt).
15.Removethe8screwsxingtheclutch
assembly and then separate the clutch
assembly.