GE WHSB9000B Series How to use

C
C
PUB # 31-9086-1 09/01
MODEL SERIES:
WHSB9000B
WNSB9100B
WPSB9080B
WPSB9120B
TECHNICAL SERVICE GUIDE
GE Consumer Home ServicesTraining
Variable Speed Washer
GEA01201

IMPORTANT SAFETY NOTICE
The information in this service guide is intended for use by
individuals possessing adequate backgrounds of electrical,
electronic, and mechanical experience. Any attempt to repair a
major appliance may result in personal injury and property
damage. The manufacturer or seller cannot be responsible for the
interpretation of this information, nor can it assume any liability in
connection with its use.
WARNING
To avoid personal injury, disconnect power before servicing this
product. If electrical power is required for diagnosis or test
purposes, disconnect the power immediately after performing the
necessary checks.
RECONNECT ALL GROUNDING DEVICES
If grounding wires, screws, straps, clips, nuts, or washers used
to complete a path to ground are removed for service, they must
be returned to their original position and properly fastened.
!
GE Consumer Home Services Training
Technical Service Guide
Copyright © 2001
All rights reserved. This service guide may not be reproduced in whole or in part
in any form without written permission from the General Electric Company.

– 1 –
Nomenclature ..................................................................................................3
Serial Number..................................................................................................3
CycleChart ......................................................................................................4
Control Panel Features....................................................................................5
WasherControlPanels ..............................................................................5
One Touch Selections ...............................................................................6
ClothesCareCycles ..................................................................................7
Control Features........................................................................................8
Cycle Options ............................................................................................9
CycleStatus...............................................................................................9
Normal Operating Sounds ...............................................................................10
Component Locator Views ...............................................................................12
WasherComponents........................................................................................13
Control Panel.............................................................................................13
Electronic Control Board ...........................................................................13
Control Filter .............................................................................................14
Front Panel ................................................................................................14
Cover/LidAssembly ...................................................................................14
Legs...........................................................................................................15
Agitator ......................................................................................................15
Water Valve/AutomaticTemperatureControl..............................................15
WaterLevelSwitch ....................................................................................16
WaterLevel(LoadSize)Diagnostic ...........................................................17
LidSwitch ..................................................................................................17
Lid Switch Diagnostic ................................................................................18
Inverter......................................................................................................18
Choke ........................................................................................................18
Motor .........................................................................................................19
Motor Tachogenerator Test .......................................................................19
Drive Belt ..................................................................................................20
DrainPump ................................................................................................20
Suspension................................................................................................21
Spin Basket ...............................................................................................21
Tub WithMotor andTransmission..............................................................22
Transmission .............................................................................................23
Schematic 24....................................................................................................24
Field Service Mode and Error Codes ..............................................................25
Motor Does Not Operate Diagnostic................................................................28
Problem Chart..................................................................................................30
TableofContents

– 2 –
TableofContents(cont.)
Troubleshooting Guide .................................................................................31
Review ..........................................................................................................36
Warranty ........................................................................................................37

– 3 –
GE Washer
FeaturePack
CommonBrandFeatures
Exceptions:
H=EnergyStar
P=Profile™
N=Special
W H S B 9 0 0 0 B W W
Capacity/Configuration
L=Large S=SuperCapacityPlus
X=Extra-Large K=Compact
ControlPlatform
B=Buttons(TouchPad)
NumberofSpeed
Combinations
NumberofCycles
00=InfiniteElectronic
Voltage
0 = US Voltage
ModelYear
Designator
BodyColor
BackSplashColor
GEA00518
Nomenclature
Nomenclature
Nomenclature
Thefirsttwocharactersoftheserialnumber
identifythemonthandyearofmanufacture.
Example: AA123456S=January, 2001
A-JAN 2005-H
D-FEB 2004- G
F-MAR 2003-F
G -APR 2002-D
H - MAY 2001 -A
L-JUN 2000-Z
M-JUL 1999-V
R -AUG 1998-T
S- SEP 1997-S
T- OCT 1996-R
V-NOV 1995-M
Z-DEC 1994- L
The letter designating
the year repeats every
12 years.
Example:
T - 1974
T - 1986
T - 1998
Note:Modelnumberandserialnumber
arelocatedonrearofbacksplash.
•Thetechnicalsheetislocatedunder
thecontrolpanel.
Nomenclature
SerialNumber

– 4 –
CycleChart
* Extendedspintimeisinadditiontofinalspintime. 1. Stainwash: 3min.agitation,12min.soak,1min.agitation,14min.soak, andthenrunthecycleselectedattheheavysoilsetting. 2. N/A 3. SoakCycle: 3min.agitationandthensoak. Drain&spinwilloccur automatically24hoursafterfill. Interruptsoakusinganothercycle,suchasdrainandspin. 4.Presoak:3min.agitationatselectedspeed,12min.soak,andcycleselected. Presoakisselectedwithanyothercycleafterthecycleisselected.
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– 5 –
ControlPanelFeatures
WasherControlPanels
ModelWHSB9000B
ModelWNSB9100B
ModelWPSB9080B
ModelWPSB9120B

– 6 –
PRESS... AUTOMATICALLY SELECTS... THEN PRESS...
For heavy to lightly soiled cottons, household linens,
work and play clothes.
For heavy to lightly soiled cottons, household linens,
work and play clothes.
For non-colorfast cottons and blends, and items that
are labeled cold wash by the fabric manufacturer.
For knits, wrinkle-free and permanent press items.
For lingerie and items labeled hand-washable with
light soils. Provides periods of agitation and soak
during wash and rinse.
For lightly soiled items that are needed in a hurry.
Cycle time is approximately 15 minutes, depending
on your household water pressure.
ModelWHSB9000
OneTouchSelections

– 7 –
CUSTOM 1 and CUSTOM 2 (on some models)
Set up your favorite combination of settings and save them here for one-touch recall.
These custom settings cannot be set while a cycle is in progress.
To store a custom combination of settings:
1. Select a O NE T OUCH setting.
2. Change
LOAD SIZE, SOIL LEVEL, TEMPERATURE, WASH SPEED or SPIN SPEED to fit
your needs.
3. Select any
OPTIONS you want.
4. Press and hold the
CUSTOM 1 or CUSTOM 2 pad until the washer beeps to store
your selection.
To recall your stored combination:
Press the CUSTOM 1 or CUSTOM 2 pad, then press START .
NOTE: DELAY 1-8 HRS. cannot be used in CUSTOM 1 and CUSTOM 2 settings.
To reprogram the custom settings:
Repeat steps 1–4 above.
C USTOM C USTOM
PRESS 3 SEC TO STORE
12
D RAIN
& SPIN
DRAIN & SPIN
DRAIN & SPIN any cycle at any time.
PRESOAK
To presoak a load and go straight into a wash cycle:
Select your wash cycle, press the PRESOAK pad, then press the START pad.
■ Starts with three minutes of agitation, then 12 minutes of soaking, followed by the
selected wash cycle.
■ Uses the speed and water temperature of your selected wash cycle.
To presoak a load for more than 12 minutes:
Press the PRESOAK pad. The washer will fill. You may change the automatic settings
if desired.
■ Three minutes of agitation is followed by up to 24 hours of soaking.
■ To soak less than 24 hours, press the DRAIN & SPIN pad or choose a wash cycle.
QUICK RINSE (on some models)
Use this feature to quickly rinse chlorine, perspiration, stains, etc. out of clothes.
■ The washer fills with water, agitates for three minutes, drains and spins. You may
change the automatic settings if desired.
QUICK
RINSE
STAIN WASH (on some models)
For heavily soiled or stained items. Adds an extra agitation and soak at the beginning of
the wash cycle.
Appearance may vary.
ClothesCareCycles

– 8 –
START
■ After you have selected a new cycle, press once to start the cycle.
■ Press twice to select the last cycle used and start the washer.
■ If the washer is running, press once to interrupt the cycle; press again to continue
the cycle.
STOP
This pad should not be used to interrupt or pause a cycle.
Pressing this pad will cancel the current settings and the settings will be lost.
Estimated Time Remaining
■ Displays the approximate time remaining until the end of the cycle.
■ If the estimated time remaining is more than 60 minutes, “1H” will flash in the
display, followed by the additional remaining minutes. When the time remaining is
less than 60 minutes, the timer will count down.
■ Cycle time is affected by how long it takes the washer to fill. This depends on the
water pressure in your home. The “smart” timer “learns” the amount of time it
takes to fill your washer and adjusts the total time accordingly.
NOTE: If PRESOAK is selected and a follow up wash cycle is not chosen, two dashes
will come up in the display.
E ST. T IME R EMAINING
ControlFeatures
Spot Spray
Provides a short spray of water to allow you to dampen clothing when you pretreat stains.
Open the washer lid.
Press the SPOT SPRAY button. (You will see a short stream of water.)
Dampen your soiled garment with the
SPOT SPRAY option and rub your favorite
pretreatment product into soiled area.
NOTE: The SPOT SPRAY option will not work if
■ the washer lid is down
■ the washer tub is filling
■ the water has already reached the level you selected.
3
2
1
The Bleach Signal is a reminder signal that can be turned on to remind you to add bleach at
the proper time in the wash cycle. Adding detergent and bleach at the same time reduces the
effectiveness of both the enzymes in the detergent and the chlorine in the bleach. By adding
bleach later in the wash cycle, you allow the detergent’s enzymes to remove dirt and stains first,
and then provide a more effective dose of liquid bleach to whiten and sanitize your clothes.
BLEACH SIGNAL (on some models)

– 9 –
PerfecTemp Plus (on some models)
PerfecTemp Plus senses the incoming water temperature and adjusts the temperature
of the fill water.
The lid must be closed for
PerfecTemp Plus to work.
If your water is too cold, detergent will not dissolve effectively and clothes may not get
clean. If the water is too hot, fabrics could be damaged.
PerfecTemp Plus adjusts these water temperature extremes for better washing
performance.
You may hear the water valves turning off and on while the water temperature is being
adjusted. This is normal.
SIGNAL
Alerts you when the cycle is complete.
On some models, press SIGNAL to turn the beeper on or off.
On some models, press
SIGNAL to select low or high volume, or to turn the beeper off.
2ND RINSE
Adds a second rinse to any cycle.
EXTEND SPIN
Extends the last spin of a wash cycle. This will extract more water from your clothes.
Clothes will be drier when you use this option.
DELAY 1-8 HOURS (on some models)
Use to delay the start of your washer for 1 to 8 hours. First choose your wash cycle and
any options. Then press this pad for the number of hours you want to delay the cycle.
Press the
START pad to start the countdown.
The countdown time will be shown in the Est. Time Remaining display.
CycleOptions

– 10 –
Normal Operating Sounds
TheProfilewasherusesanextremelyquietdrivemotor;therefore,normaloperatingsounds,not
heardonpreviousmodels,maybenoticedonthismodel. Themostnoticeableoperatingsound
onthismodelmaybefromthetransmission.

– 11 –
Notes

– 12 –
Motor
Drain
Pump
Inverter
Belt
Rodand
Spring
Assembly
Legand
Platform
Assembly
Water
Valves
WaterLevel
Switch
Filter
WaterTemperature
Sensor
ElectronicControl
Board
Choke
Transmission
(BehindMotor)
Component Locator Views
Spot
Soak

– 13 –
P0003552
ControlPanel
Toplacethecontrolpanelintheserviceposition,
remove4torxscrewsfromthetopofthe
backsplashandrotatethetopforward.
Electronic Control Board
Theelectroniccontrolboardisattachedtothe
backofthecontrolpanel.
Note: Ifmotordoesnotoperate,performMotor
DoesNotOperateDiagnosticbeforereplacing
electroniccontrolboard.
Toremovetheelectroniccontrolboard:
1. Placethecontrolpanelinserviceposition.
2. Disconnecttheharnessconnections.
Removeandretainthemodelselectorharness
plugforreassembly.
3. Remove2(1/4-in.)screwsfromthecontrol
board.
Caution: Topreventelectrostaticdischarge,
groundyourselftothewashercabinetorusean
ESDwristband.
4. Removetheelectroniccontrolboardbygently
liftingfromposition.
Note:Whenreassembling,aligntheLEDswith
theappropriatecontrolpanelindicators.
Remove 4 Screws
GEA00371
Remove Harness
Connections
Model
Selector
Harness
Remove Harness
Connections
Screws
Electronic
Control Board
GEA00373
CN5 CN1
CN3
CN4CN6
CN7 CN2
WasherComponents

– 14 –
p
521-01D
Align Putty Knife
To Groove In Lid
O
NE
T
OUCH
C
YCLE
S
TATUS
W
HITES
HOT
S
OAK
PRESOAK
S
UPER
L
ARGE
M
EDIUM
S
MALL
L
IGHT
N
ORMAL
H
EAVY
S
TAIN
W
ASH
H
OT
C
OLD
N
ORMAL
F
AST
2
ND
R
INSE
E
XTEND
S
PIN
D
ELAY
&HOUR
B
EEPER
N
ORMAL
S
LOW
G
ENTLE
F
AST
G
ENTLE
S
LOW
W
ARM
W
ARM
W
ARM
C
OLD
C
OLD
C
OLD
Q
UICK
RINSE
C
USTOM
1
C
USTOM
2
D
RAIN
&SPIN
H
AND
W
ASH
E
ASY
C
ARE
PERMPRESS
C
OLORS
WARM
SPEED
WASH
D
ARK
C
OLORS
COLD
ClothesCareCycles
PRESS3SECTOSTORE
PerfecT
emp
SOAKWASHRINSE2NDRINSEAUTOBALANCEFINALSPIN
E
ST.
T
IME
R
EMAINING
L
OAD
SIZE
S
OIL
LEVEL
O
PTIONS
S
TART
PAUSE
S
TOP
CANCEL
T
EMP
WASH/RINSE
S
PEED
WASH/SPIN
Lid Switch
3 Locking Tabs
341-01D
Bottom
Tabs
Lid Switch
3 Locking Tabs
ControlFilter
ThepotentialexistsfortheProfilewashertocause
electronicdevicesandsystemsinthevicinityto
experiencedisruption. Toeliminatethelikelihood
ofdisruption,theunitisequippedwithaconductive
noisefilter. Shouldinterferencewithelectronic
itemsbereported,suspectaproblemwiththe
filter. Thegroundwireattachedtothebottomof
thefiltermusthaveagoodconnectionforthefilter
tooperateproperly. Checktomakecertainthat
thegroundwireisconnectedproperlybefore
replacingthefilter.
Thefilterisaccessedbyplacingthecontrolpanel
intheserviceposition.
FrontPanel
Thefrontpanelisaremovable,galvanizedsheet
metalsection. Thefrontpanelisfastenedatthe
topby2metalspringclips,andatthebottomby2
metaltabswhichprotrudefromthebaseofthe
unitintoslotsinthepanelbottom.
Mostmajormechanicalcomponentscanbe
accessedbyremovingthefrontpanel.
Toremovethefrontpanel:
1. Locate2springclipsbetweenthetopcover
andfrontpanelbyaligningaputtyknifewithleft
orrightedgeoflid(seeillustration).
2. Inserttheputtyknifeandpushforwardto
releaseclips.
3. Rotatethefrontpanelforwardandliftoffthe
bottomtabs.
Cover/LidAssembly
Thecover/lidassemblyisfastenedatthefrontby
2screws,onthesidesby2metalcatches,andat
thebackby3lockingtabswhichprotrudefromthe
bottomofthecontrolpanel.
Note: Donotallowlidtoswingopenwhencover/
lidassemblyisremoved. Damagemayresult.
P0003582

– 15 –
Toremovethecover/lidassembly:
1. Removethefrontpanel.
2. Remove2(1/4-in.)hexscrewsfromthefront
ofthecabinet.
3. Reachunderthelidassemblyandlocatethe
lidswitch. Squeezethelidswitchlatchinto
releaseitwhilegentlypushingtheswitch
upward. Guidelidswitchthroughopening.
4. Pullthetopcovertowardyouwhileliftingup
thefrontedgetoreleasethesidecatchesand
rearlockingtabs. Removethetopcover.
Legs
Thefrontlegsareascrewtypeandareadjusted
byturningthelegsclockwisetodecreaseleg
extensionandcounterclockwisetoincreaseleg
extension.
Therearlegsshouldbeadjustedafterthefrontof
themachineislevelfromsidetoside. Toadjust
therearlegs,tiltthewasherforward(pivotonfront
legs)about4to6inches. Thisactionwillsetrear
legstocorrespondtothefrontsettings. Gently
setthewasherbackdown.
521 01F
Lid Switch
O
NE
T
OUCH
C
YCLE
S
TATUS
W
HITES
HOT
S
OAK
PRESOAK
S
UPER
L
ARGE
M
EDIUM
S
MALL
L
IGHT
N
ORMAL
H
EAVY
S
TAIN
W
ASH
H
OT
C
OLD
N
ORMAL
F
AST
2
ND
R
INSE
E
XTEND
S
PIN
D
ELAY
&HOUR
B
EEPER
N
ORMAL
S
LOW
G
ENTLE
F
AST
G
ENTLE
S
LOW
W
ARM
W
ARM
W
ARM
C
OLD
C
OLD
C
OLD
Q
UICK
RINSE
C
USTOM
1
C
USTOM
2
D
RAIN
&SPIN
H
AND
W
ASH
E
ASY
C
ARE
PERMPRESS
C
OLORS
WARM
SPEED
WASH
D
ARK
C
OLORS
COLD
ClothesCareCycles
PRESS3SECTOSTORE
PerfecT
emp
SOAKWASHRINSE2NDRINSEAUTOBALANCEFINALSPIN
E
ST.
T
IME
R
EMAINING
L
OAD
SIZE
S
OIL
LEVEL
O
PTIONS
S
TART
PAUSE
S
TOP
CANCEL
T
EMP
WASH/RINSE
S
PEED
WASH/SPIN
Lid Switch
3 Locking Tabs3 Locking Tabs
521-01E
Lid Switch
Lid Switch
Lid Switch
Lid Switch
Latch
3 Locking Tabs
Agitator
Theagitatorisadualaction,2-piece,ratchetingtypewhichsetsonanairbellcoupling. Removethe
agitatorbygraspingthebottomandsharplypullingup.
Toaligntheagitatorforreassembly,matchthegroovesintheairbelltothegroovesinsidetheagitator.
Thefinsontheoutsideoftheagitatorarealignedwiththegroovesontheinsideoftheagitator.
Toremovetheairbellcoupling,removethe7/16-in.boltandliftoffthetransmissionshaft.
WaterValve/AutomaticTemperature
Control(ATC)
Thewatervalveisadoublesolenoid,120VAC
typevalvewithawatertemperaturesensoronthe
outletport. Accesstothewatervalveandwater
temperaturesensorisobtainedbyremovingthe
controlpanel.
Thewatertemperaturesensorisathermsitorwith
anegativetemperaturecoefficient(astemperature
rises,resistancelowers). Refertothestripcircuit
orSchematicchapterforresistancevalues. The
electroniccontrolboardusesthedifference
betweenthevoltagesenttothewatertemperature
sensorandvoltagereturningfromthewater
P0003576

– 16 –
temperaturesensortodeterminethetemperature
oftheincomingwaterandmakeAutomatic
TemperatureControl(ATC)decisions.
TheATCshouldmaintainthewatertemperaturein
thetubwithintherangesspecifiedintheWater
Temperatureschart.
Topreventsuddenwatertemperaturechangeson
consumer’s hands,theATCdoesnot function
whenthelidisopen.
Note:Duringcoldwaterfill,thehotwatervalve
willopenifthewaterinlettemperatureistoocold.
Lid Switch
3 Locking Tabs
Tab
Load Size Switch
Water Level Switch
WaterLevelSwitch
Note: AlsorefertoWaterLevel(LoadSize)
Diagnostic.
Thewaterlevelswitchhastwoswitchesinone
housingandislocatedinsidethecontrolpanel.
Thewaterlevelswitchisconnectedbyahoseto
anairreservoirnearthebottomoftheoutertub.
Whenthewaterlevelrisesinthewashertub,airis
trappedinthereservoir. Asthewaterlevelrises,
theairpressureinthereservoirincreases. When
6inchesofwaterhaveaccumulatedinthewasher
tub,theappropriatepressurewillbeachievedand
thelowswitchwillopen. Thehighswitchwillopen
whenthewaterinthetubhasreachedits
maximumlevel. Mid-levelfillsaretimed,basedon
theamountoftimeittooktofilltolowestlevel.
Note:Beforedisconnectinghosefromwaterlevel
switch,besurewaterlevelinmachineisbelow
bottomofwashbasket. Afterreconnectinghose,
putmachineinspinforatleast1minutebefore
checkingoperationofswitch.
Toremovewaterlevelswitch:
1. Placethecontrolpanelinserviceposition(see
procedure).
2. Usingascrewdriver,gentlydepressthetab
andturnthewaterlevelswitch
counterclockwisetoremoveitfromthe
keyhole.
NOTE: Theswitchesarenormallyclosed(withno
waterintub).
GEA01199
6
5
3
WHITE
BLUE
ORANGE
C
HL 1612
WATER
LEVEL
SWITCH 11
CN2
GEA00531
3
2
1
BLACK
WHITE
WATER
TEMP
SENSOR
CN3
12
11
8
TAN
PURPLE
WHITE W/RED
GEA01203
COLD
HOT
N
WHITE W/RED
CN2
serutarepmeTretaW
erutarepmeT
gnitteS
ledoM
B0009BSHW
retaW
serutarepmeT
ledoM
B0809BSPW
B0019BSNW
B0219BSPW
serutarepmeTretaW
toHF°8-/+511F°8-/+021
mraWF°7-/+08F°7-/+59
dloCretaWpaTF°7-/+07

– 17 –
WaterLevel(LoadSize)Diagnostic
Todetermineifthewaterlevelsensorandelectroniccontrolboardarefunctioningcorrectly,performthe
following:
1. PutthewasherinFieldServiceMode. RefertotheFieldServiceModeandErrorCodeschapter.
2. PutthewasherinthefunctionActivatesDryAgitate-30strokesperminute(displaysAL). Referto
theFieldServiceModeandErrorCodeschapter.
3. PresstheStartpadfor2seconds. Themotorwillstopandthecoldwatersolenoidvalvewillopen.
Asthetubfills,theLoadSizeLEDsshouldilluminate. WhenthetubisfullandtheSuperLoadSize
LEDisilluminated,thewasherwillresumeagitation.
Foreachloadsize,thewatershouldbeatthefollowinglevel:
• Super-14.0(+/-0.5)inches
• Large-10.4(+/-0.5)inches
• Medium-8.2(+/-0.5)inches
• Small-6.1(+/-0.5)inches
IftheSmallLoadSizeLEDdoesnotilluminatewhenthewaterlevelreaches6.1(+/-0.5)inches,
checktoseethatthewaterlevelsensorisclosedwhenthewaterlevelisbelow6.1(+/-0.5)inchesand
thatitisopenwhenthewaterlevelis6.1(+/-0.5)inchesandabove. Ifthewaterlevelsensorfuctions
properly,replacetheelectroniccontrolboard.
IftheMediumorLargeLoadSizeLEDdoesnotoperatewhenthewaterlevelreaches8.2
(+/-0.5)inches(Medium)or10.4(+/-0.5)inches(Large),checktoseethattheSmallLoadSizeLED
operatesnormally(seeaboveparagraph). IftheSmallLoadSizeLEDoperatesnormally,replacethe
electroniccontrolboard. Note: TheMediumandLargeLoadSizewaterlevelsaretimedinthe
electroniccontrolboard. Thetimingbeginswhenthefirstswitchofthewaterlevelsensoropensand
theSmallLoadSizeLEDisilluminated.
IftheSuperLoadSizeLEDdoesnotilluminatewhenthewaterlevelreaches14.0(+/-0.5)inches,
checktoseethatthewaterlevelsensorisclosedwhenthewaterlevelisbelow14.0(+/-0.5)inches,
andthatitisopenwhenthewaterlevelis14.0inchesandabove. Ifthewaterlevelsensorisfunctioning
properly,replacetheelectroniccontrolboard.
521-01E
Lid SwitchLid Switch
Lid Switch
Latch
3 Locking Tabs
Lid Switch
Note: AlsorefertoLidSwitchDiagnostic.
Thelidswitchisfastenedtothecover/lid
assemblybyasinglelatch. Itisasafetyfeature
thatpreventsthemachinefromperformingcertain
functions,suchasagitateorspin,whenthelidis
open. Theswitchisclosedbyamagnetthatis
attachedtothelid. Whenthelidisshut,the
magnetwillcausetheswitchtoclose,allowing
normalfunctionstooccur. Whenthelidisopened,
theswitchwillreturntotheopenpositionandwill
preventcertainwasherfunctions.
GEA01204
3
1CN2
ORANGE
YELLOW W/RED
YELLOW W/BLACK
LID
SWITCH

– 18 –
Lid Switch Diagnostic
Todetermineifthelidswitchcircuitisoperatingnormally,enterFieldServiceMode(thecontrolpanel
shoulddisplayFd).ThisplacesthelidswitchintheCycleStatusLEDcircuit.Liftingthelidshouldturn
offallCycleStatusLEDs,whicharelocatedatthebottomofthecontrolpanel. Closingthelidshould
turnonallCycleStatusLEDs.
• IftheCycleStatusLEDsdonotturnoffwhenthelidisopen,thelidswitchmaybestuckclosed.
• IftheCycleStatusLEDsdonotturnonwhenthelidisclosed,thelidswitchmaybestuckopenor
thelidswitchwiringmaybeopen. IfthelidswitchandwiringareOK,theelectroniccontrolboardis
faulty.
Inverter
Theinverterconvertsline-in,singlephase,60Hz,
120VAC,into3-phase,varyingfrequency,
230VAC. Theinvertercontrolsmotorspeed,
torque,anddirection. Italsoprovidesmotor
overcurrentandthermaloverloadprotection.
MotorspeedisregulatedbyPulseWidth
Modulation(PWM). PWMoutputsvoltagetothe
motorinpulsesratherthananuninterruptedflow.
Thispulsingproduceseffectivevoltagebeing
receivedatthemotor,whichisequivalenttoa
reductioninvoltage.
Motortorqueisadjustedthroughoutthespeed
rangebyvaryingthepulsewidthmodulated
voltagetothemotor. Theinvertermonitorsthe
motorcurrentandusesthisinformationto
calculateandmakemotortorqueadjustments.
Thiseliminatestherequirementofaclutch.
Motordirectionischangedwhentheinverter
reversespolarity.
Theinverterismountedtothebaseofthewasher
by2(5/16-in.)screwsanddoublesidedtape.
Accessisobtainedbyremovingthefrontpanel.
Choke
ThechokeisanEMI(electromagnetinterference)
filterlocatedinthelowerportionofthewiring
harness,closetotheinverter. It is designedto
reduceEMIproducedbytheunit. EMIhasthe
potentialtodisrupttheoperationofelectronic
devicesandsystemsinitsvicinity. Shouldthe
customercomplainofinterferencewithother
electronicitemswhiletheunitisoperating,check
tomakesurethefilter(seeFiltersection)is
properlygrounded. Thechokeisnotareplaceable
part. Intheeventthechokefails(open),itistobe
bypassed.
P0003555
CN8
CN9
CN10
P0003571
Choke