Whirlpool W10254428A User manual

PAGE 1
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
IMPORTANT SAFETY NOTICE — “For Technicians only”
This service data sheet is intended for use by persons having electrical, electronic, and
mechanical experience and knowledge at a level generally considered acceptable in the
appliance repair trade. Any attempt to repair a major appliance may result in personal injury
and property damage. The manufacturer or seller cannot be responsible, nor assume any
liability for injury or damage of any kind arising from the use of this data sheet.
Console Diagnostics ............................................ 2
Diagnostic Guide.................................................. 3
Service Diagnostics ............................................. 3
Quick Diagnostic Test........................................... 4
Fault/Error Codes ................................................. 7
Contents
Troubleshooting Guide........................................ 10
Test Procedures ................................................. 12
Manually Unlocking the Door Lock System ......... 23
Component Removal.......................................... 23
Wiring Diagram.................................................. 24
PART NO. W10254428A
IMPORTANT: Electrostatic Discharge (ESD) Sensitive Electronics
ESD problems are present everywhere. Most people begin to feel an ESD discharge at
approximately 3000V. It takes as little as 10V to destroy, damage, or weaken the main control
assembly. The new main control assembly may appear to work well after repair is finished,
but a malfunction may occur at a later date due to ESD stress.
Use an anti-static wrist strap. Connect wrist strap to green ground connection point or
unpainted metal in the appliance
-OR-
Touch your finger repeatedly to a green ground connection point or unpainted metal
in the appliance.
Before removing the part from its package, touch the anti-static bag to a green ground
connection point or unpainted metal in the appliance.
Avoid touching electronic parts or terminal contacts; handle electronic control assembly
by edges only.
When repackaging main control assembly in anti-static bag, observe above instructions.
Voltage Measurement Safety Information
When performing live voltage measurements, you must do the following:
Verify the controls are in the off position so that the appliance does not start when energized.
Allow enough space to perform the voltage measurements without obstructions.
Keep other people a safe distance away from the appliance to prevent potential injury.
Always use the proper testing equipment.
After voltage measurements, always disconnect power before servicing.

PAGE 2
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CONSOLE DIAGNOSTICS (features and appearances may vary between models)
Rotating the cycle selector knob turns the cycle
LEDs on and off. LCD screen confirms selections.
Features and appearances vary between models.
POWER Button – press twice
to exit service diagnostic mode
and return to standby mode. START/PAUSE Button –
begin or continue test.
Dispense Info Button –
provides dispensing cartridge
information on LCD screen.
System Settings –
provides washer settings
on LCD screen.
Color LCD Screen – displays current options and settings,
cycle information, and estimated time remaining. Error Codes,
Diagnostics, and System Information are accessed
via Service Menus.
Each press toggles the
FanFresh indicator On and Off. EcoBoost Button – turns Eco Boost LED
on/off. LCD screen confirms status. LCD Control Buttons – to select and navigate
options displayed on the LCD screen.
(Recommended buttons to access Diagnostic Mode)
1st 2nd 3rd
Figure 1 - Console Diagnostics

PAGE 3
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DIAGNOSTIC GUIDE
Before servicing, check the following:
Make sure there is power at the wall outlet.
Has a household fuse blown or circuit breaker
tripped? Was a regular fuse used? Inform
customer that a time-delay fuse is required.
Are both hot and cold water faucets open
and water supply hoses unobstructed?
All tests/checks should be made with a
VOM (volt-ohm-milliammeter) or DVM
(digital-voltmeter) having a sensitivity of
20,000 Ωper volt DC or greater.
Resistance checks must be made with
washer unplugged or power disconnected.
IMPORTANT: Avoid using large
diameter probes when checking harness
connectors as the probes may damage
the connectors upon insertion.
Check all harnesses and connections before
replacing components. Look for connectors
not fully seated, broken or loose wires and
terminals, pin insertion, or wires not pressed into
connectors far enough to engage metal barbs.
A potential cause of a control not
functioning is corrosion or contamination on
connections. Use an ohmmeter to check for
continuity across suspected connections.
SERVICE DIAGNOSTICS
These tests allow factory or service personnel
to test and verify all inputs to the machine control
electronics. You may want to do a quick and
overall checkup of the washer with these tests
before going to specific troubleshooting tests.
EXITING SERVICE DIAGNOSTICS
Scroll down and select the “Exit Diagnostic”
button provided on the Home Screen.
DIAGNOSTICS HOME SCREEN
LCD Navigation
See Figure 2.
ACTIVATING SERVICE DIAGNOSTICS
1. Be sure the washer is in standby mode
(plugged in with all indicators off).
2. Select any three buttons and follow
the steps below, using the same buttons
(remember the buttons and the order that the
buttons were pressed):
Within 8 seconds,
tPress and Release the 1st selected button,
tPress and Release the 2nd selected button,
tPress and Release the 3rd selected button;
tRepeat this 3 button sequence 2 more times.
3. If the key sequence was entered successfully,
the language selection screen is displayed.
4. Select the desired language—choices are:
English, French, and Spanish.
5. The following screen warns that this area is
for service technicians only.
tPressing “Exit” returns to original screen.
tPressing “Enter” continues to DIAGNOSTIC
HOME screen.
NOTE: The service diagnostic mode will time
out after 5 minutes of user inactivity and will
return to the screen the user was on before
entering the service diagnostic mode.
Figure 2 - LCD Navigation
The menu is displayed as a list of
selectable items on separate rows.
Each menu item may contain several
lines.
As user navigates over elements with
additional information, the highlight
extends the length of the screen. All
non-selectable items will display a
short gray highlight preceding the
item.
Pressing the Left or Back button
returns user to previous screen.
The last item after System Info is
“Exit Diagnostics”. Selecting this
item returns user to previous screen.
When an invalid item is selected, an
invalid key-press beep is generated.
Pressing the corresponding buttons
for the arrows moves highlight up and
down. Pressing the corresponding
button for OK selects the highlighted
option.
The navigation buttons have press and
hold functionality. If the button is held
for longer than 1 second, the navigation
will automatically move one row
every 0.5 seconds.
These buttons are used for navigation and selection.

PAGE 4
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The “Diagnostics Home” screen (see Figure
2, page 3) displays the following service
diagnostic items:
tError Diagnostic – Access Error Codes,
Error History, Quick Diagnostic Test, and
Clear All Errors
tComponent Activation – Activation and
functional testing of system components
and sensors (page 5)
tSystem Info – Displays model #, serial #,
hardware info, and other system variables
(page 6)
tExit Diagnostics – Returns user to
previous screen (menu item is viewable
when scrolled up)
ERROR DIAGNOSTIC (Figure 3)
Access Error Codes, Error History,
Quick Diagnostics, and Clear All Errors
tError Code – Displays existing fault/error
code (if no error exists, this item is NOT
shown). Refer to Fault/Error Code tables
on pages 7–9.
Figure 3 - Error Diagnostic Screen
tError History – Displays the last four
saved fault/error codes (if no error exists,
this item is NOT shown). Provides error
code and description, time of error, and
cycle information when error occurred.
See Figure 4.
tQuick Diagnostic Test – (See chart on
page 5). Performs a quick system level
test of the washer and displays error
results in a dialog box. Tests door lock
system, inlet valves, motor, heater, temp
sensor, pressure sensor, dispenser, and
drain pump. Test stops on first error
detected. Use this test to check for errors
and verify repairs.
tClear All Errors – Clears all stored fault/
error codes. NOTE: Once the errors are
cleared, they cannot be recovered again.
Figure 5 - Quick Diagnostic Test
Figure 4 - Error History Screen

PAGE 5
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QUICK DIAGNOSTIC TEST
TEST
PHASE WASHER FUNCTION COMPONENT STEP ENDS…
C00 Door lock motor is actuated. Door
unlocks, and then locks again.
Pump is activated for 15 seconds.
*Door lock system
*Drain Pump
on completion only.
C01 Heater is turned on.
Steam valve is actuated.
* Heater
* Steam Valve
* Temperature Sensor
on completion or at key press.
C02 Cold water valve will actuate. * Flow Meter
* Cold Water Valve
on completion or at key press.
C03 Dispensing system is set to the
Prewash position.
*Dispenser Motor
*Dispenser Contact
on completion only.
C04 Hot water valve will actuate. * Hot Water Valve on completion or at key press.
C05 Drum rotates clockwise at wash
speed.
* Motor
* Motor Control Unit (MCU)
on completion or at key press.
C06 Heater is turned on.
Drum rotates clockwise at wash speed.
The water valve is activated to fill
drum to minimum water volume
required to wash. (If there is enough
water in the drum, the water valve
will not turn on.)
*Heater
*Water Temperature
Sensor
*Pressure Sensor
on completion or at key press.
C07 Drain Pump is actuated until there is
no water in the system—plus an
additional 15 seconds.
* Drain Pump
* Pressure Sensor
on completion only.
C08 Drum rotates counterclockwise
from 35 rpm > 100 rpm > 150 rpm >
100 rpm in 4 minutes.
* Motor
* Motor Control Unit
on completion only.
Drum rotates counterclockwise
at maximum speed.
* Motor
* Motor Control Unit
on completion or at key press.
COMPONENT ACTIVATION (Figure 6)
Activation and functional testing of system
components and sensors.
Figure 6 - Component Activation Menu
tComponent Activation – When a
component is selected from the
Component Activation menu, a screen
appears providing component information,
and if available, attributes related to the
component. Many of the components
listed can be turned on and off. By default,
the component is off. (See chart below.)
OUTPUT ON/OFF DETAILS
UI Component Test YES Status (On/Off)
If the user interface does not respond, go to TEST #2, page 13.
Door Status N/AStatus (Open/Closed)
-&'%"% *!&&(&)%&*!% )**+) &*&TEST #4, page 14.
Drum Light YES Status (On/Off)
-(+$#" !*&)%&**+(%&% &*&TEST #5, page 15.
Buzzer YES Status (On/Off)
-+,,(&)%&*)&+% &*&TEST #2, page 13.
COMPONENT ACTIVATION

PAGE 6
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tUI Component Test – On pressing each
of the buttons around the LCD, their
representation on the screen changes
from black to green. Press and hold the
right-most navigation key to return to
previous screen. (See Figure 7.)
Figure 7 - UI Component Test
SYSTEM INFO (Figure 8)
Displays model and serial number, hardware
information, and other system variables.
NOTE: All non-selectable items will display a
short gray highlight preceding the selection;
however, as the highlight of the screen moves
over items with more information, it displays
regular background length. (Refer to Figures
8 & 9.)
Non-selectable items
Items with more info.
Figure 8 - System Information Screen Figure 9 - Hardware Information Details

PAGE 7
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FAULT/ERROR CODES — The fault codes below may be indicated under various
conditions and can be accessed through Service Diagnostics.
Display EXPLANATION AND RECOMMENDED PROCEDURE
SUDS SUDS DETECTED
Fault is displayed when Suds prevent the basket from spinning up to speed or the pressure sensor detects
rising suds level. The main control will flush water in attempt to clear Suds. If the water flush is unable to
correct the
p
roblem, this ma
y
indicate:
Possible Causes
C6:;905.+,:,8.,5:68,>*,990<,+,:,8.,5:;9(.,
CVerify Bulk Dispensing setting. Make sure user has selected the right type of detergent and water hardness.
C/,*2*3,(5+8(057;47-03:,8(5+/69,6--68,0.56)1,*:9
C59;8,+8(05/,0./:+6,956:,>*,,+A4-864=(9/,8)(9,
F0E1 LOAD DETECTED DURING THE WASHER CLEANING CYCLE
;805.:/,*3,(505.*?*3,(36(+=(9+,:,*:,+0590+,:/,+8;43,(8,8868*6+,(5+8;5(3,(505.?*3,
to verif
y
p
roblem.
Possible Causes
C6(+0590+,:/,=(9/,8+;805.*3,(5*?*3,
C,*/(50*(3-80*:06565+80<,4,*/(509468)(92,:36:/05.),:=,,5)(92,:(5+:;)
F1E1 CCU ERROR
A *644;50*(:065,8868),:=,,5:/,$(5+65)6(8+ !/(96**;88,+6865,6-:/,4(058,3(?909
not workin
g
p
ro
p
erl
y
.
Possible Causes
C/,*2:/,,3,*:80*(36;:3,:-68+(4(.,
CA 76=,89;8.,+8674(?/(<,*(;9,+:/09786)3,4$573;.68+09*655,*:=(9/,8. Verify power at outlet
<63:(.,763(80:y,.86;5+05.(5++,+0*(:,+*08*;0:!,*655,*:76=,8(5+8,:,9:
CA 8,3(?65:/,$4(?),=,3+,+
See #"T $ 6=,8/,*2657(.,
F1E2 MCU ERROR - MULTIPLE RESETS
6:6865:863$50:$/(9(505:,85(34(3-;5*:0658,7,(:05.;5+,8686<,8<63:(.,686<,8*;88,5:
*65+0:0659(5(396),*(;9,+)?464,5:(8?36996-5,;:8(3-,,+:6$+;805.:/,9705*?*3,-:/,
error occurs during a high-speed spin, the door will remain locked for 3 minutes.
Possible Causes
C",,#"T 6:6808*;0:657(.,
F2E3 UNSUPPORTED CYCLE
?*3,*688;7:06568$0956:*647(:0)3,-68:/0997,*0-0*46+,36-=(9/,8.
Possible Causes
C5:,840::,5:*644;50*(:065),:=,,5$(5+$/,*2/(85,99-68*65:05;0:y.
C!6:(:,*?*3,9,3,*:68256)(5+<,80-?*?*3,05-684(:065659*8,,5$4(?),*688;7:,+
C$0956:*647(:0)3,=0:/=(9/,8D8,73(*,$
F3E1 PRESSURE SWITCH / PRESSURE SENSOR ERROR
#/,$+,:,*:9(56;:6-8(5.,78,99;8,90.5(3The use of analog pressure sensor or digital pressure
switch is model de
p
endent, but the
p
rocedure to detect this error does not chan
g
e.
Possible Causes
C/,*278,99;8,/69,*655,*:065-864:;):678,99;8,9,5968. Is hose pinched, kinked, plugged, or leaking air?
C",,#"T  8,99;8,",5968657(.,
F3E2 TEMPERATURE SENSOR ERROR
T/09,886809+0973(?,+0-:/,=(:,8:,47,8(:;8,9,5968<(3;,096;:6-8(5.,E:6E&BE:6E'
To-05+:/,*688,*:6/48,(+05.8,-,8:6:,47,8(:;8,*/(8:657(.,This error code is available only in
service dia
g
nostics.
Possible Causes
C",,#"T #1#,47,8(:;8,",5968657(.,
F3E4 BULK PRESENCE OR LEVEL SENSOR ERROR
The Bulk sensor is not able to detect presence of the cartridge or level of the detergent. This error code
does not stop the washer from functioning and is available only in service diagnostics.
Possible Causes
C",,#"T ,<,3 8,9,5*,",59686+;3,657(.,
F5E1 DOOR SWITCH ERROR
This code is generated if the door has not been open for 3 consecutive cycles, or the door switch is open
=/03,:/,+6680936*2,+-68468,:/(59,*65+9-:/096**;89+;805.5684(367,8(:065:/,);@@,8),,79
3 times. This error code is available only in service diagnostics.
Possible Causes
C$9,878,99,9"#!T without closing door.
C66856:67,5-68*659,*;:0<,*?*3,9.
C6689=0:*/4,*/(5094+(4(.,+686)9:8;*:,+
C",,#"T 6686*2"?9:,4657(.,

PAGE 8
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DO NOT REMOVE OR DESTROY
FAULT/ERROR CODES (continued) — The fault codes below may be indicated
under various conditions and can be accessed through Service Diagnostics.
Display EXPLANATION AND RECOMMENDED PROCEDURE
F5E2 DOOR LOCK ERROR
At the start of a cycle, the washer attempts to lock the door 6 times. If door cannot be locked, the washer
goes into pause mode and code is generated. This code is available only in service mode.
Possible Causes
=224126&203/(6(/;&/25(''7(62,16(4)(4(1&(
=+(&.'224/2&.0(&+$1,50)24'$0$*(0,5$/,*10(1624)24(,*12%-(&65
=(( T 2242&.;56(0213$*(
F5E3 DOOR UNLOCK ERROR
At the start of a cycle, the washer attempts to unlock the door 6 times. If door cannot be unlocked, the washer
goes into pause mode and the code is generated. This code is available only in service diagnostics.
Possible Causes
=Verify door latch is secured to front panel.
=+(&.)240,5$/,*1('%42.(12428(46,*+6(1(''224/$6&+
=(( T 2242&.;56(0213$*(
F6E1 COMMUNICATION ERROR BETWEEN CCU AND MCU
20071,&$6,21%(69((16+((164$/21642/!1,6$1'6+(!+$5126%((1'(6(&6('
Possible Causes
=+(&.'22459,6&+23(4$6,21$7/6;59,6&+0$;,16(4)(4(9,6+329(462!
=+(&.'4,8(5;56(0)24924124)$7/6;&20321(165
=Ve4,);&216,17,6;,1&$%/(%(69((1!$1'!((9,4,1*',$*4$0213$*(
=(( T !29(4+(&.213$*(
=(( T 2624,4&7,6213$*(
F6E2 COMMUNICATION ERROR UI TO CCU
F6E3 COMMUNICATION ERROR CCU TO UI
20071,&$6,21%(69((1(164$/21642/!1,6!$1'!5(416(4)$&(!+$5126%((1'(6(&6('
Possible Causes
=Ve4,);&216,17,6;,1&$%/(%(69((1!!$1'!((9,4,1*',$*4$0213$*(
=+(&.$1'5733/,(5((  !29(4+(&.213$*(
=(( T !5(416(4)$&(213$*(
F6E5 COMMUNICATION ERROR BETWEEN CCU AND EB
20071,&$6,215%(69((16+(!$1':3$15,212$4'+$8(126%((1'(6(&6('#+(16+,5(44242&&745
there is no bulk dispensing, presence, or level information. This error code is not displayed during operation;
however, when the fault occurs, the washer
p
auses.
Possible Causes
=Ve4,);&216,17,6;,1&$%/(%(69((1!$1'((9,4,1*',$*4$0213$*(
=+(&.$1'5733/,(5((  !29(4+(&.213$*(
=(( T :3$15,212$4'213$*(.
F7E1 DRIVE MOTOR TACHOMETER ERROR / WASHER OVERLOAD
+(!,571$%/(623423(4/;'(6(&60262453(('$1'6+(9$5+(45+765'291)(44242&&745'74,1*
+,*+53,16+('2244(0$,15/2&.(')240,176(5
Possible Causes
=#$sher is overloaded.
=Verify that the shipping system, including shipping bolts and spacers, is removed.
=(&+$1,&$/)4,&6,21<8(4,);6+$6'470426$6(5)4((/;.
=(( T 2624,4&7,6213$*(
F7E2 MCU FAULT OR MOTOR OVERHEAT
+(+($65,1.(:&(('5>>)6+,52&&745!9,//4(5(66+(!$1'9$,6)246+(02624
to cool down before restarting. +,5342&('74(&$14(3($673626,0(5%()24(,5',53/$;('
Possible Causes
=Improper installation of washer. Ensure that washer is not located near a heat source and has proper ventilation.
=+(&.6+$6'470,512628(4/2$'('9,6+&/26+(5
=(&+$1,&$/)4,&6,21<8(4,);6+$6'470426$6(5)4((/;.
=+(&.'4,8(5;56(0)24924124)$7/6;&20321(165(( T 2624,4&7,6213$*(
F8E0 STEAM INLET VALVE ERROR
This error is displayed when the steam valve malfunctions. This error can be seen only in service diagnostics.
Possible Causes
=59$6(45733/;&211(&6('$1'6741('21
=+(&.)24%/2&.('24.,1.(',1/(6+25(5
=299$6(434(5574(24%/2&.('+25(5&4((15.
=+(&.56($08$/8(23(4$6,21(( T #ater Inlet Va/8(5213$*(

PAGE 9
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
FAULT/ERROR CODES (continued) — The fault codes below may be indicated
under various conditions and can be accessed through Service Diagnostics.
Display EXPLANATION AND RECOMMENDED PROCEDURE
F8E1 NO WATER DETECTED ENTERING WASHER OR PRESSURE SWITCH TRIP NOT DETECTED
The washer does not detect water input after 13 minutes of filling.
Possible Causes
:37!4%23500,9#/..%#4%$!.$452.%$/.
:(%#+&/2",/#+%$/2+).+%$).,%4(/3%3
:/77!4%202%3352%/2",/#+%$(/3%3#2%%.3.
:(%#+&/202/0%2$2!).(/3%).34!,,!4)/.37!4%23)0(/.).'/54/&4(%$2!).(/3%2!).(/3%-534./4
"%-/2%4(!.13 mm) into drain pipe.
:(%#+02%3352%(/3%#/..%#4)/.&2/-45"4/02%3352%3%.3/23(/3%0).#(%$+).+%$0,5''%$
:%%T  !4%2.,%4Va,6%3/.0!'%
:%%T 2%3352%%.3/2/.0!'%
F8E2 DISPENSER SYSTEM ERROR
)30%.3%2-/4/2)35.!",%4/2%!#(4(%$%3)2%$0/3)4)/.
Possible Causes
:(%#+4(%-%#(!.)#!,,).+!'%&2/-$)30%.3%2-/4/24/4/0/&$)30%.3%2.
:%%T )30%.3%2)342)"54)/.934%-/.0!'%
F8E3 OVERFLOW CONDITION
The overflow condition occurs if there is too much water or foam in the washer and the overflow contact
/.4(%02%3352%37)4#()3#,/3%$&/2-/2%4(!.3%#/.$3/24)-%3$52).'4(%3!-%#9#,%&/6%2&,/7
/##5234(%6!,6%3!2%#,/3%$!.$4(%$2!).05-037)4#(%3/.&/2!4,%!343%#/.$3
Possible Causes
:(%#+).,%46!,6%3&/202/0%23(54/&f.
:Ve2)&94(!4$2!).(/3%)3./40,5''%$/2+).+%$
:(%#+#,%!.$2!).05-0&),4%2/&&/2%)'./"*%#43
:(%#+02%3352%(/3%#/..%#4)/.&2/-45"4/02%3352%3%.3/23(/3%0).#(%$+).+%$0,5''%$
:%%T  !4%2.,%4Va,6%3/.0!'%
:%%T 2%3352%%.3/2/.0!'%
:%%T 2!).5-0/.0!'%
F8E4 FLOW METER FAULT
&,%334(!./&7!4%2(!3%.4%2%$4(%45"!&4%23%#/.$3&2/-4(%34!24/&4(%15)#+$)!'./34)#2/54).%
4()3%22/27),,"%$)30,!9%$()3%22/2#/$%)3!6!),!",%/.,9).3%26)#%$)!'./34)#3
Possible Causes
:37!4%23500,9#/..%#4%$!.$452.%$/.
:(%#+&/2",/#+%$/2+).+%$).,%4(/3%3
:%%T  !4%2.,%4Va,6%3/.0!'%
:%%T ,/7%4%2/.0!'%
F9E1 LONG DRAIN
&4(%$2!).4)-%%8#%%$3-).54%37)4(/542%!#().'2%3%4,%6%,).02%3352%3%.3/24(%6!,6%3!2%452.%$
off and the drain pump will stop running. Note:5$3#!.#!53%$%,!93).$2!).).' !sher drains for
-).54%30!53%3-).54%34(%.42)%3!'!).&/2!$$)4)/.!,-).54%3/&$2!).).'7),,$)30,!9)&7!3(%2
$/%3./4$2!)./2-!,$2!).4!+%3,%334han 2 minutes)
Possible Causes
:Ve2)&94(!44(%$2!).(/3%)3./4",/#+%$/2+).+%$
:!+%352%$2!).(/3%)3./43%!,%$).4/$2!).0)0%
:!+%352%4(%$2!).(/3%(%)'(4$/%3./4%8#%%$-
:(%#+#,%!.$2!).05-0&),4%2/&&/2%)'./"*%#43
:(%#+02%3352%(/3%#/..%#4)/.&2/-45"4/02%3352%3%.3/23(/3%0).#(%$+).+%$0,5''%$
:%%T 2!).5-0/.0!'%
/2,%!+).'!)2
/2,%!+).'!)2
/2,%!+).'!)2

PAGE 10
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
TROUBLESHOOTING GUIDE
PROBLEM POSSIBLE CAUSE CHECKS & TESTS
No power to washer Check power at outlet, check circuit breakers,
fuses, or junction box connections.
Connection problem between AC plug
and CCU Check connections between the AC power cord and CCU for continuity.
Connections between CCU and user
interface Check connections and continuity between CCU and UI.
CCU problem See TEST #1: CCU Power Check, pg. 12.
User interface problem See TEST #2: User Interface, pg. 13.
Door lock mechanism not functioning 1. Door not closed due to interference.
2. Lock not closed due to interference.
3. See TEST #4: Door Lock System, pg. 14.
Connections between CCU and UI Check connections and continuity between
CCU and UI.
User interface problem See TEST #2: User Interface, pg. 13.
CCU problem See TEST #1: CCU Power Check, pg. 12.
Connections between CCU and UI Check connections and continuity between
CCU and UI.
User interface problem See TEST #2: User Interface, pg. 13.
CCU problem See TEST #1: CCU Power Check, pg. 12.
Door not closed Ensure that door is completely closed.
Door lock obstructed Check mechanism for obstruction.
Door lock mechanism not functioning See TEST #4: Door Lock System, pg. 14.
Reset washer Unplug and reconnect the power cord. Wait 2
minutes to see if the washer door unlocks.
Misaligned, broken, or over-tightened
door latch Check door lock mechanism and repair as necessary.
Door lock mechanism not functioning See TEST #4: Door Lock System, pg. 14.
No water supplied to washer 1. Check water connections to washer.
2. Verify hot and cold supply is on.
Dispenser clogged with detergent Clean obstruction from dispenser.
Valve problem See TEST #6: Water Inlet Valves, pg. 15.
Dispenser system problem See TEST #12: Dispenser Distribution System,
Detergent pump problem See TEST #14: Detergent Pump, pg. 21.
No water supplied to washer or low water
pressure 1. Check water connections to washer. 2. Verify hot and cold supply is on.
Plugged filter/screen Check for plugged filter or screen in the water
valve or hoses.
Drain hose installation Check for proper drain hose installation.
Is water siphoning out of the drain hose?
Valve problem See TEST #6: Water Inlet Valves, pg. 15.
Pressure sensor problem See TEST #7: Pressure Sensor, pg. 16.
Drain hose/filter is plugged Check for hose and drain filter obstructions.
Valve(s) not shutting off See TEST #6: Water Inlet Valves, pg. 15.
Pressure sensor problem See TEST #7: Pressure Sensor, pg. 16.
Drain pump problem See TEST #8: Drain Pump, pg. 16.
Is door lock showing open during See TEST #4: Door Lock System, pg. 14.
Harness connections Check harness connections between CCU >
MCU > and drive motor.
Motor problem See TEST #3: Motor Circuit, pg. 13.
Mechanical friction Check for obstruction between spin basket
and outer tub.
Harness connections Check harness connections between CCU >
MCU > and drive motor.
Motor problem See TEST #3: Motor Circuit, pg. 13.
WON’T POWER UP
ANo operation
A73-@8),9-:876:e
A7:79,1:84)@
WON’T START CYCLE
No response when Start
Button is pressed.
UI WON’T ACCEPT
SELECTIONS
WON’T FILL
(Normal water level is
only 2.5" to 5" [63.5 mm
to 127 mm] inside tub.)
DOOR WON’T LOCK
DOOR WON’T UNLOCK
MOTOR OVERHEATS
DRUM WON’T ROTATE
OVERFILLS
WON’T DISPENSE
pg. 19.
the cycle?

PAGE 11
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
TROUBLESHOOTING GUIDE (continued)
PROBLEM POSSIBLE CAUSE CHECKS & TESTS
Drain hose installation Check for proper drain hose installation. Make
sure it is not inserted more than 4.5" (113 mm).
Plugged drain hose Check drain hose for obstructions.
Obstructions to drain pump Check and clean drain filter for obstructions.
Harness connections Check harness connections between CCU
and drain pump.
Drain pump problem See TEST #8: Drain Pump, pg. 16.
Water hose installation Make sure inlet hoses are connected properly
and valves are turned on fully.
No hot water dispensed Ensure that household hot water is present
at tap. Minimum: 120°F (49°C)
Heating element problem See TEST #10: Heating Element, pg. 18.
Temperature sensor problem See TEST #11: Temperature Sensor, pg. 18.
Supply hose connections Check hose connections and damaged rubber
gasket due to over-tightening.
Drain hose installation Check for proper drain hose installation.
Plugged drain hose Check drain hose for obstructions.
Overloading the washer Overloading can partially push door open.
Internal hose connections Check internal hose connections for leakage.
Check bellows Remove, reposition, and reinstall the bellows.
Make sure bellows is not wrinkled.
Shipping kit not removed Verify shipping bolts and spacers are removed.
Washer not level Level washer per installation instructions.
Floor stability Weak floors can cause vibration and walking
of the washer.
Rubber feet not installed Install rubber feet on leveling legs.
Leveling lock nuts not tightened Tighten leveling lock nuts.
High-pitched noise May be caused by clogged inlet screens.
Disconnect hoses and clean screens.
Spring/damper installation Check for proper spring and damper placement
and installation.
Hardware Inspect panels for bending, warpage, or damage.
Check for loose hardware.
Oversuds 1. Verify use of HE detergent.
2. Excessive detergent usage.
3. Check drain hose and filter for obstructions.
Incorrect water level See “WON'T FILL”, pg. 10.
Clothes wet after cycle is complete1. Single or tangled items in washer.
2. Oversuds (see above).
3. See “WON’T DRAIN”, above.
Load not rinsed 1. Check proper water supply.
2. Not using HE detergent.
3. Washer not loaded properly.
4. See TEST #6: Water Inlet Valves, pg. 15.
Not cleaning clothes 1. Washer not loaded properly.
2. Not using HE detergent.
3. Not using correct cycle.
4. Not using dispensers.
Fabric damage 1. Washer overloaded.
2. Bleach added incorrectly.
3. Sharp items in tub.
Wrong option or cycle selection Refer customer to “Use & Care Guide”.
WON’T DRAIN
INCORRECT WATER
TEMPERATURE
POOR WASH
PERFORMANCE
Please reference
Use & Care Guide
VIBRATION OR NOISE
LEAKING

PAGE 12
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
TEST PROCEDURES
IMPORTANT: The following procedures
may require the use of needle probes
to measure voltage. Failure to use needle
probes will damage the connectors. To
ease the process of measuring voltage
and resistance, test points for each pin are
accessible through the slots in the plastic
beneath each CCU connector.
TEST #1: Cycle Control Unit/Power Check
This test checks for incoming and outgoing power
to and from Cycle Control Unit (CCU). This test
assumes that proper voltage is present at the outlet.
1. Unplug washer or disconnect power.
2. Remove top panel to access the
machine electronics.
3. Visually check that all connections to the
interference filter are securely connected.
4. Visually check that all connections to the
CCU and Expansion Board (EB) are fully inserted.
5. If both visual checks pass, go to step 6.
DL3-Door Lock Coil
t= pin-1
6. Plug in washer or reconnect power.
7. With a voltmeter set to AC, check for line
voltage at the input of the interference filter.
See Figure 11.
If line voltage is present, go to step 8.
If line voltage is not present, verify the
continuity of the power cord. If it fails the
continuity check, replace the power cord.
8. With a voltmeter set to AC, check for line
voltage at the output of the interference filter.
See Figure 11.
If line voltage is present, go to step 9.
If line voltage is not present, replace the
interference filter.
9. With a voltmeter set to AC, check for input
line voltage to the CCU across pins 1 and 2 of
connector IF2.
If line voltage is present, go to step 10.
If line voltage is not present, check
harnesses and connections between the
filter and the CCU. Repair as necessary.
DI6-Detergent Dispenser Motor
FM3-Flow Meter
DCS3-Door Closed Switch
PS8-Pressure Sensor
SET2-Temperature
Sensor
UP3-Expansion
Brd Power
UI7-User Interface
MI3-MCU
Communications
FAC3-Wide
to Expansion Brd
DP2-Drain Pump
RP2-Vent Fan
VCH7-Hot/Cold Valves
VFS2-Steam Valve
MS2-MCU Power
IF2-Interference
Filter
DLS2-Door
Lock Switch
HE2-Heater
Element
HSG2-Expansion
Board
Figure 10 - Cycle Control Unit (CCU)
Figure 11 - Interference Filter
Filter Output - Line
Filter Input - Line (Power Cord) Filter Input - Neutral (Power Cord)
Filter Output - Neutral

PAGE 13
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
10. DC Supplies
t +5VDC is used to power IC’s and
processors on the circuit boards. If +5 VDC
was missing, the washer would become
unresponsive. To verify +5VDC ± 5%,
measure voltage at UI7 pin 7 (GND) to pin 2
(+5V [Vcc]). (Red lead to Vcc.)
t +12VDC is used to actuate most of the
120VAC relays, triacs, and switches on the
CCU. If +12VDC was missing, the motors,
valves, and pumps would not turn on. To
verify +12VDC ± 5%, measure voltage
at UI7 pin 3 (–7V) to pin 2 (+5V [Vcc]).
(Red lead to Vcc.)
Troubleshooting: Refer to the wiring diagram
on page 24 when troubleshooting the DC
supplies. If +5 or +12 VDC is missing on
the CCU, unplug washer or disconnect power,
and then disconnect all components from the
CCU relying on that supply. Plug in washer or
reconnect power and check if the DC supply
has returned. If not, replace the CCU. If it has,
turn washer off and reconnect one connector
at a time until the component loading down
that supply has been identified.
11. Unplug washer or disconnect power.
12. Reassemble all parts and panels.
13. Perform the “Quick Diagnostic Test”
on pages 4–5 to verify repairs.
TEST #2: User Interface (UI)
This test is performed when any of the
following situations occurs during the
UI Component Test (see page 6):
None of the indicators or LCD turn on
Some buttons do not light indicators
No beep sound is heard
None of the indicators or LCD turn on:
1. Unplug washer or disconnect power.
2. Remove the top panel to access the CCU
and user interface (UI).
3. Visually check that ALL CCU connectors
are inserted all the way into the CCU.
4. Visually check that ALL UI connectors
are inserted all the way into the UI.
5. Visually check that the UI and housing
assembly is properly inserted into the front
console.
6. If all visual checks pass, perform TEST #1: CCU
Power Check, page 12, to verify supply voltages.
If supply voltages are present, replace the
user interface and housing assembly.
If supply voltages are not present, replace
the CCU.
7. Reassemble all parts and panels.
8. Plug in washer or reconnect power.
9. Perform the “UI Component Test”
(see page 6) to verify repair.
Some buttons do not light indicators:
1. Unplug washer or disconnect power.
2. Remove the top panel to access the CCU
and user interface (UI).
3. Visually check that the UI and housing
assembly is properly inserted into the front
console.
4. If visual check passes, replace the UI and
housing assembly.
5. Reassemble all parts and panels.
6. Plug in washer or reconnect power.
7. Perform the “UI Component Test”
(see page 6) to verify repair.
No beep sound is heard:
1. Unplug washer or disconnect power.
2. Remove the top panel to access the CCU
and user interface (UI).
3. Visually check that ALL CCU connectors
are inserted all the way into the CCU.
4. Visually check that ALL UI connectors
are inserted all the way into the UI.
5. If all visual checks pass, replace the UI
and housing assembly.
6. Perform the “UI Component Test”
(see page 6) to verify repair.
TEST #3: Motor Circuit
This test checks the motor, motor control unit
(MCU), and wiring.
From CCU MI3
(MCU Communications) From CCU MS2 (MCU Power)
To Motor
Figure 12 - Motor Control Unit (MCU)

PAGE 14
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
IMPORTANT: A guide (W10271535) is
required to assemble the rotor onto the shaft.
W10271535 is inserted into the threaded hole,
and then the rotor is slid on over the guide.
1. Check the motor and electrical connections
by performing the “Quick Diagnostic Test” on
pages 4–5. The following steps assume that
this step was unsuccessful.
2. Unplug washer or disconnect power.
3. Check to see if basket will turn freely.
If basket turns freely, go to step 4.
If basket does not turn freely, determine
what is causing the mechanical friction
or lockup.
4. Remove the top and rear panels to access
the machine electronics and motor components.
5. Visually check that connectors MS2 and MI3
are inserted all the way into the CCU. Refer to
CCU diagram on page 12.
If visual checks pass, go to step 6.
If visual checks fail, reconnect MS2 and
MI3, and repeat step 1.
6. Visually check that all connectors are
inserted all the way into the MCU (see Figure 12,
page 13).
If visual checks pass, go to step 7.
If visual checks fail, reconnect the
MCU connectors and repeat step 1.
7. Check the motor windings. Disconnect the
motor harness from the MCU. With an ohmmeter,
verify the resistance values as shown below:
If the values are outside the range or open,
replace stator assembly; otherwise, reconnect
the motor harness and go to step 8.
8. Check the two harnesses between the
CCU and MCU for continuity.
If there is continuity, go to step 9.
If there is no continuity, replace the main
lower harness.
9. With a voltmeter set to AC, connect the
leads across pins 1 and 2 of connector MS2.
10. Plug in washer or reconnect power.
11. Run the “Quick Diagnostic Test” on pages
4–5. IMPORTANT: Door must be closed and
locked to run motor.
12. When the test shows “C05 & C08” on the
display, the motor is powered and line voltage
from the CCU should be present across pins
1 & 2 of connector MS2.
If line voltage is present, replace the MCU.
If line voltage is not present, replace the CCU.
13. Unplug washer or disconnect power.
14. Reassemble all parts and panels.
15. Perform the “Quick Diagnostic Test”
on pages 4–5 to verify repair.
TEST #4: Door Lock System
Perform the following checks if the washer
does not lock (or unlock).
1. Check lid lock mechanism for obstruction
or binding. Repair as necessary.
2. Unplug washer or disconnect power.
3. Remove top panel to access machine
electronics.
4. Visually check that the DL3, DLS2, and
DCS3 connectors are inserted all the way into
the CCU. Refer to CCU diagram on page 12.
If visual check passes, go to step 5.
If any of the connectors are not inserted
properly, reconnect and retest door lock.
5. Referring to the chart below, disconnect
the specified connectors from the CCU. With
an ohmmeter, verify resistance values listed
in the chart. NOTE: To measure the door lock
switch in the “locked” position, plug in washer
or reconnect power. Press the POWER button,
select any cycle, and then press START.
Actuation of the door lock solenoid should be
heard. At that point, unplug the washer and
disconnect DLS2 from the CCU and measure
resistance across pins 1 & 2.
If resistance values are good, go to step 6.
Motor Harness Windings ()
Pins 1 & 2 8.5 - 14.0 
Pins 2 & 3 8.5 - 14.0 
Pins 1 & 3 8.5 - 14.0 
Component
Door Switch DCS3-1 DCS3-3
DL3-1 DL3-2
DL3-2 DL3-3
Door Lock
Switch DLS2-1 DLS2-2
Locked = 0 ohms
Unlocked = Open Circuit
Resistance
63 ohms
Door Lock
Coils
Contacts
Measured
DOOR LOCK RESISTANCE
Door Closed = 0 ohms
Door Open = Open Circuit
63 ohms

PAGE 15
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
If any of the measurements do not match the
values shown in the chart, check the harness
of the suspected component between the
CCU and door lock mechanism for continuity.
If the harness and connections are
good, replace the door lock mechanism.
NOTE: To minimize risk of damage to door
lock/switch wires, remove the door lock
mechanism screws before removing the
front panel.
6. If the preceding steps did not correct the
lock problem, replace the CCU and retest door
lock mechanism.
Unplug washer or disconnect power.
Replace the CCU.
Reassemble all parts and panels.
Perform the “Quick Diagnostic Test”
on pages 4–5 to verify repair.
TEST #5: Drum Light
This test is performed if the drum LED does
not light.
1. Press and hold the EcoBoost/Drum Light
button on the console until the LCD screen
acknowledges the drum light is on.
If the LCD does not confirm the button
press, replace the UI.
If the LCD confirms the button press,
go to step 2.
2. Unplug washer or disconnect power.
3. Remove the top panel to access CCU
and user interface (UI).
4. Verify the drum light connector (P13)
is securely connected to the UI.
5. Check harness and connections between
the drum light and the UI.
If the connections are OK, go to step 6.
If not, repair or replace as needed.
6. Unplug the drum light connector (P13)
from the UI.
7. Plug in washer or reconnect power.
8. Press and hold the EcoBoost/Drum
Light button on the console until the LCD
acknowledges the drum light is on.
9. With a multimeter set to milliamps, measure
the current across UI connector P13, pins 1
and 3. If the drum LED driver is working
properly, you should measure 150–370 mA.
If the current is present, replace
the drum LED.
If the current is not present, replace the UI.
10. Unplug washer or disconnect power.
11. Reassemble all parts and panels.
Water Level Controls
Water Inlet Valves – Test #6
Pressure Sensor – Test #7
Drain Pump – Test #8
Flow Meter – Test #9
TEST #6: Water Inlet Valves
This test checks the electrical connections
to the valves and the valves themselves.
1. Check the relays and electrical
connections to the valves by performing the
“Quick Diagnostic Test” on pages 4–5. The
following steps assume one or more of the
valves did not turn on.
2. For the valve(s) in question, check the
individual solenoid coils:
a. Unplug washer or disconnect power.
b. Remove top panel to access machine
electronics.
c. Remove connectors VCH7 and VSF2 from
the CCU. Refer to CCU diagram on page 12.
d. Check harness connections to the
solenoid valves. Verify continuity in harness
between CCU and solenoid valves.
3. Check valve coil resistance at the valves,
or across the following VCH7 and VSF2
connector pin-outs:
Resistance should be ~990 Ω.
If resistance readings are tens of ohms outside
the value or open, replace the valve assembly.
If resistance readings are within range,
reconnect VCH7 and VSF2 to CCU and go
to step 4.
Valve Pinout
Cold Fill ValveVCH7, pins 1 & 2
Hot Fill ValveVCH7, pins 3 & 4
Steam Valve VSF2, pins 1 & 2

PAGE 16
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
4. Plug in washer or reconnect power.
5. With a voltmeter set to AC, attach the
leads across the pins of the suspect valve
(see chart in step 3). Run the “Quick
Diagnostic Test” and check for line voltage
across the pins of the valve. NOTE: Refer
to the “Quick Diagnostic Test” on pages 4–5
to determine when the cold, hot, and steam
valves are actuated. (Example: Cold valve is
actuated during test phase C02.)
If line voltage is present and valve still does
not activate, replace valve assembly.
If line voltage is not present, replace the CCU.
6. Unplug washer or disconnect power.
7. Reassemble all parts and panels.
8. Perform the “Quick Diagnostic Test”
to verify repairs.
TEST #7: Pressure Sensor
This test checks the pressure sensor, CCU,
and wiring. NOTE: Usually, if the pressure
sensor malfunctions, the washer will generate
a long fill or long drain error.
1. Check the functionality of the pressure
sensor by running a small load cycle. The
valves should turn off automatically after
sensing the correct water level in the tub.
The following steps assume that this step
was unsuccessful.
2. Press START/PAUSE to stop the cycle and
then press POWER. The cycle will cancel and
drain the water from the tub.
3. Unplug washer or disconnect power.
4. Remove top panel to access machine
electronics. Pressure sensor is located
at top right rear of cabinet.
5. Check hose connection between the
pressure sensor and the pressure dome
attached to the tub.
6. Check to ensure hose is routed
correctly in the lower cabinet and not
pinched or crimped.
7. Verify there is no water, suds, or debris
in the hose or dome. Disconnect hose from
pressure sensor and blow into hose to clear
water, suds, or debris.
8. Check hose for leaks. Replace if needed.
9. Visually check that connector PS8 is
inserted all the way into the CCU (refer to
CCU diagram on page 12). Also check that
the pressure sensor harness is securely
connected to the sensor.
10. Check the harness between the CCU and
Pressure Sensor for continuity.
If there is continuity, go to step 11.
If there is no continuity, repair or replace
as necessary.
11. Plug in washer or reconnect power.
12. With a voltmeter set to DC, connect black
probe to CCU connector PS8, pin 8 (GND) and
red probe to PS8, pin 4 (+5V [Vcc]).
If +5VDC is present, replace the pressure
sensor.
If+5VDC is not present, perform TEST #1:
CCU Power Check on page 12.
13. If the preceding steps did not correct the
problem, replace the CCU.
Unplug washer or disconnect power.
Replace the CCU.
Reassemble all parts and panels.
Perform the “Quick Diagnostic Test”
on pages 4–5 to verify repair.
TEST #8: Drain Pump
Perform the following checks if washer does
not drain.
1. Check for obstructions in the usual areas.
Clean and then perform step 2.
2. Check the drain pump and electrical
connections by performing the “Quick
Diagnostic Test” on pages 4–5. The following
procedures assume that this step was
unsuccessful.
3. Unplug washer or disconnect power.
4. Remove top panel to access machine
electronics.
5. Visually check that the DP2 connector is
inserted all the way into the CCU. Refer to
CCU diagram on page 12.
If visual check passes, go to step 6.
If connector is not inserted properly,
reconnect DP2 and repeat step 2.

PAGE 17
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
6. Remove connector DP2 from the CCU.
With an ohmmeter, measure the resistance
across pins 1 and 2.
7. Resistance should be approximately 16 Ω.
If the reading is infinite (open), go to step 8.
If the reading is correct, go to step 12.
8. Remove the front panel to access drain
pump. Verify pump is free from obstructions.
9. Visually check the electrical connections
at the drain pump.
If visual check passes, go to step 10.
If connections are loose, reconnect the
electrical connections and repeat step 2.
10. With an ohmmeter, check harness for
continuity between the drain pump and CCU.
If there is continuity, go to step 11.
If there is no continuity, replace the lower
machine harness and repeat step 2.
11. With an ohmmeter, measure the resistance
across the two pump terminals. Resistance
should be approximately 16 Ω.
If the reading is infinite (open), replace the
drain pump assembly.
If the reading is correct, go to step 12.
12. If the preceding steps did not correct the
drain problem, replace the CCU.
Unplug washer or disconnect power.
Replace the CCU.
Reassemble all parts and panels.
Perform the “Quick Diagnostic Test”
on pages 4–5 to verify repair.
TEST #9: Flow Meter
This test checks the electrical connections
to the flow meter and the flow meter itself.
1. Perform the “Quick Diagnostic Test” on
pages 4–5. If error code F8E4 is generated,
the washer is detecting less than 0.1L of
water after 30 seconds of starting the test.
Go to step 2.
2. Did the valve(s) turn on and was water
seen and heard entering the drum?
No, the valve(s) did not turn on.
Go to TEST #6: Water Inlet Valves.
Yes, the valve(s) turned on, but no water
entered the drum. Go to step 3.
Yes, the valve(s) turned on and water
entered the drum. Go to step 4.
3. Verify that the hot and cold water inlet
hoses are properly connected to the washer
and the valves are turned on fully. Ensure the
inlet hoses are not kinked or inlet screens
blocked.
4. Unplug washer or disconnect power.
5. Remove top panel to access machine
electronics.
6. Visually check that connector FM3 is
inserted all the way into the CCU. Refer
to CCU diagram on page 12.
If visual check passes, go to step 7.
If connector is not inserted properly,
reconnect FM3 and repeat step 1.
7. With an ohmmeter, check the harness
between the CCU (FM3) and flow meter
for continuity.
If there is continuity, go to step 8.
If there is no continuity, replace the flow
meter harness.
8. With voltmeter set to DC, connect leads
to FM3 pins 1 and 3. Run a wash cycle and
measure the flow meter voltage when the inlet
water valves open and water is entering the
washer. A nominal reading of approximately
200mV should be measured when water
is flowing through the flow meter (voltage
will vary depending on household water
pressure). No water flowing = 0V.
If voltage is present, the flow meter is
working properly. Go to step 9.
If voltage is not present when water is
entering the washer, replace the flow meter.
9. If the preceding steps did not correct the
drain problem, replace the CCU.
Unplug washer or disconnect power.
Replace the CCU.
Reassemble all parts and panels.
Perform the “Quick Diagnostic Test”
on pages 4–5 to verify repair.

PAGE 18
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
Water Temperature Controls
Heating Element – Test #10
Temperature Sensor – Test #11
TEST #10: Heating Element
This test checks the heating element, wiring,
and CCU.
1. Unplug washer or disconnect power.
2. Remove top panel to access machine
electronics.
3. Disconnect connector HE2 from the CCU.
Refer to CCU diagram on page 12.
4. Using an ohmmeter, measure the resistance
across pins 1 and 2 of connector HE2.
If the resistance is between 10-20 Ω, the
heating element and wiring are good; go
to step 8.
If the resistance is open, go to step 5.
5. Access the heating element.
6. Disconnect the wire connectors from the
heating element.
7. Using an ohmmeter, measure the
resistance across the two heating element
terminals.
If the resistance is between 10-20 Ω, the
heating element is good; replace the lower
main harness.
If the resistance is open, replace the
heating element.
8. If the preceding steps did not correct the
heating element problem, replace the CCU.
Unplug washer or disconnect power.
Replace the CCU.
Reassemble all parts and panels.
Perform the “Quick Diagnostic Test”
on pages 4–5 to verify repair.
TEST #11: Temperature Sensor
This test checks the temperature sensor,
wiring, and CCU.
1. Unplug washer or disconnect power.
2. Remove top panel to access machine
electronics.
3. Disconnect connector SET2 from the CCU.
Refer to CCU diagram on page 12.
4. Using an ohmmeter, measure the
resistance across pins 1 and 2 of temperature
sensor connector SET2. The measured
resistance should be within the temperature
range shown in the following table.
If the resistance is within the range shown
in the table, go to step 8.
If the resistance is infinite or close to zero,
go to step 5.
5. Remove the front panel to access the
heating element.
6. Disconnect the temperature sensor
connector from the heating element.
7. Using an ohmmeter, measure the
resistance across pins 1 and 2 of the
temperature sensor (on the heating element).
If the resistance is within the range shown
in the table above, the sensor is good;
replace the lower main harness.
If the resistance is open, replace the
temperature sensor.
8. If the preceding steps did not correct the
temperature sensor problem, replace the CCU.
Unplug washer or disconnect power.
Replace the CCU.
Reassemble all parts and panels.
Perform the “Quick Diagnostic Test”
on pages 4–5 to verify repair.
Temperature Sensor
Figure 13 - Heater & Temperature Sensor
Heater Terminal Heater Terminal
Approx. Resistance
F° C° K
32 0 35.9
50 10 22.8
68 20 14.8
86 30 9.8
104406.6
122504.6
140603.2
158702.3
176801.7
194901.3
Approx. Temperature

PAGE 19
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
Detergent Dispensing Controls
Dispenser Distribution System – Test #12
Expansion Board (EB) Power Check –
Test #13
Detergent Pump – Test #14
Level/Presence Sensor Module – Test #15
TEST #12: Dispenser
Distribution System
Perform the following checks if the washer
will not dispense detergent, bleach, or fabric
softener.
1. Check water supply to washer. Check water
hose connections to and inside the washer.
2. Verify dispenser drawer is not clogged
with detergent.
3. Unplug washer or disconnect power.
4. Remove the top panel to access the
machine electronics.
5. Check the mechanical linkage from
dispenser motor to top of dispenser.
6. Visually check that the DI6 connector is
inserted all the way into the CCU. Refer to
CCU diagram on page 12.
If visual check passes, go to step 7.
If connector is not inserted properly,
reconnect DI6 and retest.
7. Remove connector DI6 from the CCU.
With an ohmmeter, verify the resistance
values shown below across the following
DI6 connector pin-outs.
If the motor resistance is good, go to step 8.
If the measurement does not match
the value shown in the chart, check the
harness and connections between the CCU
and dispenser motor for continuity. If the
harness and connections are good, replace
the dispenser motor.
8. Plug in washer or reconnect power. Run
the “Quick Diagnostic Test” on pages 4–5.
Between steps “C02” & “C03,” observe that
the dispenser motor changes the direction
of the diverter valve from one position to
another. Ex: Prewash (position 1) to Main
Wash (position 2). Verify the motor has
repositioned the valve and water is flowing
into dispenser.
If the dispenser motor did not change
the direction of the diverter valve, replace
the motor.
9. If the preceding steps did not correct the
dispensing problem, replace the CCU and
retest dispenser system.
Unplug washer or disconnect power.
Replace the CCU.
Reassemble all parts and panels.
Perform the “Quick Diagnostic Test”
to verify repair.
Component
Dispenser
Motor DI6-1 DI6-2
Contacts
Measured
DISPENSER SYSTEM RESISTANCE
1400-1600 ohms
Resistance

PAGE 20
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
TEST #13: Expansion Board (EB) Power Check
NCommunicates with the CCU through the WIDE bus.
NReceives 120VAC, +5 (Vcc) and –7VDC from the CCU. +12V (–7V to Vcc).
NDetects the presence of the cartridge.
NDetects the level of detergent within the cartridge.
NControls the pump to dispense detergent determined by the wash cycle.
DEP2-Detergent Pump LPS2-AC IN
TOP
VIEW
SIDE
VIEW
t= pin-1
EBP3-Expansion Board Power DPS2-Detergent
Presence Sensor
CIN4-WIDE IN DLS3-Detergent
Level Sensor
Figure 14 - Expansion Board
This test checks for incoming power to the
Expansion Board (EB). This test assumes
that proper voltage is present at the CCU
(see TEST #1).
1. Unplug washer or disconnect power.
2. Remove top panel to access the machine
electronics.
3. Visually check that all connections to the
CCU and EB are fully inserted.
4. If visual check passes, continue to step 5.
5. Plug in washer or reconnect power.
IMPORTANT: Make sure door is closed and
locked.
NOTE: Line voltage to and from the EB can
only be measured when the detergent pump
is actuated. This occurs for approximately
1-5 seconds toward the end of the FILL cycle.
Connect the voltmeter as specified below, and
then select the Normal Wash cycle and press
START. Watch for line voltage toward the end
of the FILL cycle.
6. With a voltmeter set to AC, check for input
line voltage to the EB across pins 1 and 2 of
connector LPS2. (See NOTE at left.)
If line voltage is present, continue to step 8.
If line voltage is not present, go to step 7.
7. With a voltmeter set to AC, check for output
line voltage from the CCU across pins 1 and 2
of connector HSG2. (See NOTE above.)
If line voltage is present, check harnesses
and connections between the CCU and EB.
Repair as necessary.
If line voltage is not present, go to TEST
#1: CCU Power Check on page 12.