Maytag MHW9000YG0 Parts Diagram
FOR SERVICE TECHNICIAN’S USE ONLY
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.
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.
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.
Contents
IMPORTANT SAFETY NOTICE — “For Technicians only”
Whirlpool Control Panel ........................................ 2
Maytag Control Panel ........................................... 3
Abbreviations, Diagnostic Guide ...........................4
Activating Service Diagnostic Mode ...................... 4
Diagnostics Home Screen .................................... 5
Error Diagnostic ................................................... 5
Quick Diagnostic Test ........................................... 6
PART NO. W10254476A
DO NOT REMOVE OR DESTROY
Component Activation, System Info ...................... 7
Fault/Error Codes ...........................................8–10
Troubleshooting Guide .................................. 11, 12
Test Procedures ........................................... 13–24
Component Removal .......................................... 25
Manually Unlocking the Door Lock System ......... 25
Wiring Diagram .................................................. 26
PAGE 1
FOR SERVICE TECHNICIAN’S USE ONLY
Information are accessed via Service Menus.
UI Component Test, Error Codes, Diagnostics, and System
Color LCD Screen – pressing the buttons around the screen
changes their on-screen representations from black to green.
on the LCD screen.
and navigate options displayed
LCD Control Buttons – to select
t
Diagnostic Mode.
one or more times to exit
“Back & ( )” buttons: press
WHIRLPOOL CONTROL PANEL (features and appearances may vary between models)
PAGE 2
appearances vary between models).
corresponding cycle indicator. (Features and
Rotating the cycle selector knob turns off each
Begin or continue test.
“START/PAUSE” button:
press once to turn off indicator.
to turn off indicator.
“POWER” button: press once
to turn off indicator.
“EcoBoost” button: press once
“FanFresh” button: press
once to turn off indicator.
DO NOT REMOVE OR DESTROY
Figure 1 - UI Component Test (Whirlpool)
FOR SERVICE TECHNICIAN’S USE ONLY
and System Information are accessed via Service Menus.
selector knob changes their on-screen representations from
black to green. UI Component Test, Error Codes, Diagnostics,
Color LCD Screen – pressing the buttons and turning the cycle
respective indicator.
button once to turn off its
Option buttons: press each
Recommended buttons
to access Diagnostic Mode.
“start/pause” button:
(large circle) turns green. (Features and appearances vary between models).
circles) turn green. When rotated through all of its positions, the knob representation
When the knob is rotated, the on-screen representations of the knob positions (small
MAYTAG CONTROL PANEL (features and appearances may vary between models)
“power/cancel” button: press
DO NOT REMOVE OR DESTROY
begin or continue test. Press
one or more times
Back/Left button: press
to exit Diagnostic Mode.
once to turn off indicator.
once to turn off indicator.
“steam for stains” button: press
once to turn off indicator.
once to turn off indicator.
“fresh hold” button: press
Figure 2 - UI Component Test (Maytag)
PAGE 3
FOR SERVICE TECHNICIAN’S USE ONLY
ABBREVIATIONS
CCU: Central Control Unit
EB: Expansion Board
IF: Interference Filter
MCU: Motor Control Unit
UI: User Interface (center/modifier PCBs
& housing)
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 Ω per 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 DIAGNOSTIC MODE
These tests allow 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.
ACTIVATING SERVICE DIAGNOSTIC MODE
1. Be sure the washer is in standby mode
(plugged in with all indicators off).
2. Select any three (3) buttons (except
POWER) and follow the steps below, using
the same buttons.
Within 8 seconds,
• Press and Release the 1st selected button,
• Press and Release the 2nd selected button,
• Press and Release the 3rd selected button;
• Repeat 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.
• Pressing “Exit” returns to original screen.
• Pressing “Enter” continues to DIAGNOSTIC
HOME screen. See Figure 3, page 5. It
may take a few seconds for the Diagnostic
Home Screen to appear.
NOTE: Service Diagnostic mode will time out
and return to standby after 5 minutes of user
inactivity.
EXITING SERVICE DIAGNOSTICS
Use either of the two methods below to exit
Service Diagnostics.
• Scroll down and select “Exit Diagnostics”
on the Diagnostics Home Screen.
• Press the “Back” button one or more times,
depending on location in Service Diagnostics.
PAGE 4
DO NOT REMOVE OR DESTROY
FOR SERVICE TECHNICIAN’S USE ONLY
Diagnostics
Home Screen
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 standby mode.
Figure 3 - LCD Navigation
DIAGNOSTICS HOME SCREEN
The “Diagnostics Home” screen (see Figure
3, above) displays the following service
diagnostic items:
• Error Diagnostic – Access Error Codes,
Error History, Quick Diagnostic Test, and
Clear All Errors (see below)
• Component Activation – Activation and
functional testing of system components
and sensors (page 7)
• System Info – Displays model #, serial
#, hardware info, and other system
variables (page 7)
• Exit Diagnostics – Exits Service
Diagnostics and returns to standby mode
When an invalid item is selected, an
invalid key-press beep is generated.
The navigation buttons have press and
Whirlpool
Maytag
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.
Pressing the corresponding buttons
for the arrows moves highlight up and
down. Pressing the corresponding
button for OK selects the highlighted
option.
These buttons are used for navigation
and selection.
• Error Codes – Displays most recent saved
fault/error code (if no error exists, this item
is NOT shown). Refer to Fault/Error Code
tables on pages 8–10.
• Error 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 5.
ERROR DIAGNOSTIC
Access Error Codes, Error History,
Quick Diagnostic Test, and Clear All Errors
NOTE: If no saved error exists, the only menu
item displayed is “Quick Diagnostic Test”.
Figure 4 - Error Diagnostic Screen
DO NOT REMOVE OR DESTROY
Figure 5 - Error History Screen
• Quick Diagnostic Test – (See page 6).
• Clear All Errors – Clears all stored fault/
error codes (if no error exists, this item is
NOT shown). NOTE: Once the errors are
cleared, they cannot be recovered again.
PAGE 5
FOR SERVICE TECHNICIAN’S USE ONLY
TEST
PHASE
WASHER FUNCTION COMPONENT PHASE ENDS…
C00 † Door lock motor is actuated. Door
unlocks, and then locks again.
Pump is activated for 15 seconds.
Pressure sensor is calibrated.
Detergent pump is actuated. (To test
pump, detergent cartridge must be
installed.)
• Door Lock System
• Drain Pump
• APS Calibration
• Level/Presence Sensor
• Detergent Pump
on completion ONLY.
C01 * Heater is turned on.
Steam valve is actuated.
• Heater
• Steam Valve
• Te mperature Sensor
on completion or at any key
press (except “Back”).
C02 † Cold water valve and active vent is
actuated. If it exists, the spray valve is
actuated for the first 5 seconds and
the dispenser valve for the remainder
of this test phase.
• Cold Water V a lve
• Spray Va lve (select models)
on completion or at any key
press (except “Back”).
C03 Dispensing system is set to the
Prewash position #1.
• Dispenser Motor/Linkage
• Dispensing System
on completion ONLY.
C04 † Hot water and dispenser valves
will actuate.
• Hot Water Valve
• Flow Meter
on completion or at any key
press (except “Back”).
C05 Drum rotates clockwise at wash speed. • Motor
• Motor Control Unit (MCU)
on completion or at any key
press (except “Back”).
C06 * Heater is turned on to heat water
to pre-set temperature level.
Drum rotates clockwise and
counter-clockwise at wash speed.
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
• Te mperature Sensor
• Motor
• Motor Control Unit
• Cold Water Valve (if needed)
• Pressure Sensor
on completion or at any key
press (except “Back”).
C07 Drain Pump is actuated until there is no
water in the system—plus an additional
15 seconds.
• Drain Pump
• Pressure Sensor
on completion or at any key
press (except “Back”).
Drum rotates counter-clockwise from
35 rpm > 100 rpm > 150 rpm > 100 rpm
• Motor
• Motor Control Unit
on completion ONLY.
Drum rotates counterclockwise at
maximum speed.
Door lock motor is actuated. Door
unlocks.
• Motor
• Motor Control Unit
• Door Lock System
on completion or at press
of “Back” button.
C08
QUICK DIAGNOSTIC TEST
in ~ 1-1/2 minutes.
•
Dispenser Va lve (select models)
• Flow Meter
• Active Vent
•
Dispenser Va lve (select models)
• Quick Diagnostic Test – (See chart below).
Performs a quick system level test of the
washer and displays error results in a
dialog box (see Figure 6). Tests door lock
system, valves, motor, heater, sensors,
flow meter, dispenser, drain and detergent
pumps. Test stops on first error detected.
Use this test to check for errors and verify
repairs.
3 Press “OK” to begin or continue test.
3 Press the “Back” button at any time
to cancel test.
Figure 6 - Quick Diagnostic Test
† C00, C02, C04 – The detergent cartridge must be inser ted into the dispenser drawer before running the Quick Diagnostic Test.
* C01, C06 – This test will run until a pre-set temperature level is reached or a button is pressed. Water temperature will affect the duration
of the test.
PAGE 6
DO NOT REMOVE OR DESTROY
FOR SERVICE TECHNICIAN’S USE ONLY
OUTPUT ON/OFF DETAILS
UI Component Test YES Status (On/Off)
If the user interface does not respond, go to TEST #2, page 14.
Door Status N/AStatus (Open/Closed)
• If opening the door does not change status, go to TEST #4, page 16.
Drum Light YES Status (On/Off)
• If drum light does not turn on, go to TEST #5, page 16.
Buzzer YES Status (On/Off)
• If buzzer does not sound, go to TEST #2, page 14.
COMPONENT ACTIVATION MENU
COMPONENT ACTIVATION
Activation and functional testing of system
components (see Figure 7).
Figure 7 - Component Activation Menu
• Component Activation – When a
component is selected from the
Component Activation menu (see chart
below), 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.
• UI Component Test
Whirlpool Models: (See Figure 1, page
2). Upon activation, all LEDs are turned
on. Pressing each button turns off its LED,
rotating the cycle selector knob turns off
each corresponding cycle indicator, and
pressing the buttons around the LCD
changes their on-screen representation
from black to green.
3 Press and hold the right-most navigation
key to return to previous screen.
Maytag Models: (See Figure 2, page 3).
Upon activation, all LEDs are turned on.
Pressing each button turns off its LED,
rotating the cycle selector knob and pressing
the buttons around the LCD changes their onscreen representation from black to green.
3 Press and hold the left-most navigation
key to return to previous screen.
SYSTEM INFO
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.)
NOTE: Missing system information does not
indicate a problem. The system information
screens are common across various washer
and dryer platforms; therefore, information
provided on one washer or dryer may not be
available on another. If uncertain about the
information, check with technical support.
DO NOT REMOVE OR DESTROY
Items with more info.
Figure 8 - System Information Screen
Non-selectable items
Figure 9 - Hardware Information Details
PAGE 7
FOR SERVICE TECHNICIAN’S USE ONLY
Code EXPLANATION AND RECOMMENDED PROCEDURE
SudSUDS 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 may indicate:
• Not using HE detergent or excessive detergent usage.
• Verify Dispensing setting. Make sure user has selected the right type of detergent and water hardness.
• Check/clean drain pump filter and hose of foreign objects.
F0E1 LOAD DETECTED DURING THE WASHER CLEANING CYCLE (remove load)
During the cleaning cycle, a load was detected inside the drum. Clear error code and run a Cleaning
C
y
cle to verify problem.
• Load inside the washer during clean cycle.
• Mechanical friction on drive mechanism or basket. (Clothing between basket and tub.)
F1E1 CENTRAL CONTROL UNIT (CCU) ERROR
A corrupted onboard EEPROM or communication error between the CCU and onboard EEPROM has
occurred. One of the main rela
y
s is not working properly.
• Check the electrical outlet for damage.
• A power surge/drop may have caused this problem. Unplug or disconnect washer. Verify power
at outlet (voltage, polarity, grounding, and dedicated circuit). Reconnect power and retest.
• A relay on the CCU may be welded.
• See TEST #1 (CCU Power Check) on page 13.
F1E2 MOTOR CONTROL UNIT (MCU) ERROR - MULTIPLE RESETS
MCU has an internal malfunction, repeating under or over voltage, or over current conditions.
Can also be caused by momentary loss of neutral feed to MCU during the spin cycle. If the error
occurs during a high-speed spin, the door will remain locked for 3 minutes.
• See TEST #3 (Motor Circuit) on page 15.
F2E3 UNSUPPORTED CYCLE
Cycle corruption or CCU is not compatible for this specific model of washer.
• Intermittent communication between CCU and UI. Check harness for continuity.
• Rotate cycle selector knob and verify cycle information on LCD screen. CCU may be corrupted.
• CCU is not compatible with washer—replace CCU.
F3E1 PRESSURE SENSOR ERROR
The CCU detects an out of range pressure signal.
• Check c onnections from tub to air trap, air trap to pressure hose, and pressure hose to press ure sensor.
• See TEST #7 (Pressure Sensor) on page 17.
F3E2 TEMPERATURE SENSOR ERROR
This error is displayed if the water temperature sensor value is out of range (23°F to 217°F
[–5°C to 103°C]). To find the correct ohm reading, refer to temperature chart on page 20.
• See TEST #11 (Temperature Sensor) on page 19.
F3E4 LEVEL OR PRESENCE SENSOR ERROR
The level/presence 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.
• See TEST #15 (Level/Presence Sensor Module) on page 22.
F4E0 HEATER IS NOT DETECTED
This error is generated when the CCU cannot detect the temperature rising during step C01 of the
Quick Diagnostic Test. This error code is available only in service diagnostics.
• Heater element unplugged or open.
• See TEST #10 (Heating Element), page 19.
• See TEST #11 (Temperature Sensor), page 19.
Is pressure hose pinched, kinked, plugged, or leaking air?
F2E2 USER INTERFACE (UI) SOFTWARE ERROR 1
Appears if UI software is corrupt.
• Check harness and connections between the CCU and UI. Recycle power and retest.
• If harness and connections between the CCU and UI are good, replace UI.
FAULT/ERROR CODES #1 — The fault codes below may be indicated under various
conditions and can be accessed through Service Diagnostics.
PAGE 8
DO NOT REMOVE OR DESTROY
FOR SERVICE TECHNICIAN’S USE ONLY
Code 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 a code is generated. This code is available only in service mode.
• Door not completely closed due to interference.
• Check door lock mechanism for damage, misalignment, or foreign objects.
• See TEST #4 (Door Lock System) on page 16.
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 a code is generated. This code is available only in service mode.
• Verify door latch is secured to front panel.
• Check for misaligned, broken, or over-tightened door latch.
• See TEST #4 (Door Lock System) on page 16.
F6E1 COMMUNICATION ERROR BETWEEN CCU AND MOTOR CONTROL UNIT (MCU)
Communication between the Central Control Unit (CCU) and the MCU has not been detected.
• Check door switch operation. Faulty switch may interfere with power to MCU.
• Check drive system for worn or faulty components.
• Verify continuity in cable between CCU (MI3 & MS2) and MCU. See wiring diagram on page 26.
• See TEST #1 (CCU Power Check) on page 13.
• See TEST #3 (Motor Circuit) on page 15.
F6E2 COMMUNICATION ERROR, UI TO CCU
Communication between Central Control Unit (CCU) and User Interface (UI) has not been detected.
• Verify continuity in cable between CCU (UI7) and UI (C2). See wiring diagram on page 26.
• Check AC and DC supplies. See TEST #1 (CCU Power Check) on page 13.
• See TEST #2 (User Interface) on page 14.
F6E5 COMMUNICATION ERROR BETWEEN CCU AND EXPANSION BOARD (EB)
Communications between the CCU and EB have not been detected. When this error occurs, there is
no bulk dispensing, diverter valve operation (if exists), presence, or level information. This error code
is not dis
play
ed during operation; however, when the fault occurs, the washer pauses.
• Verify continuity in cable between CCU (FAC3) and EB (CIN4). See wiring diagram on page 26.
• Check AC and DC supplies. See TEST #1 (CCU Power Check) on page 13.
• See TEST #13 (Expansion Board Power Check) on page 21.
F7E1 DRIVE MOTOR SPEED SENSING ERROR / WASHER OVERLOAD
The MCU is unable to properly detect motor speed and the washer shuts down. If error occurs during
high-spin, the door remains locked for 2-3 minutes.
• Washer is overloaded.
• Verify that the shipping system, including shipping bolts and spacers, is removed.
• Mechanical friction – verify that drum rotates freely.
• See TEST #3 (Motor Circuit) on page 15.
F7E2 MCU OVERHEAT AND/OR MOTOR OVERHEAT
The heat sink exceeds 212°F (100°C). If this occurs, the CCU will reset the MCU and wait for the motor
and/or the MCU to cool down before restarting. After 4 attempts, F7E2 is displayed.
• Improper installation of washer. Ensure that washer is not located near a heat source and has
• Check that drum is not overloaded with clothes.
• Mechanical friction – verify that drum rotates freely.
• Check drive system for worn or faulty components. See TEST #3 (Motor Circuit) on page 15.
F5E1
This code is generated if the switch is open while the door is locked for more than 5 seconds.
This error code is available only in service diagnostics.
• User presses START without closing door.
• Door switch mechanism damaged or obstructed.
• See TEST #4 (Door Lock System) on page 16.
DOOR SWITCH ERROR
COMMUNICATION ERROR, CCU TO UIF6E3
proper ventilation.
FAULT/ERROR CODES #2
DO NOT REMOVE OR DESTROY
PAGE 9
FOR SERVICE TECHNICIAN’S USE ONLY
Code EXPLANATION AND RECOMMENDED PROCEDURE
F8E1 NO WATER DETECTED ENTERING WASHER OR PRESSURE SENSOR TRIP NOT DETECTED
The washer does not detect water input after 13 minutes of filling.
• Is water supply connected and turned on?
• Check for blocked or kinked inlet hoses.
• Low water pressure or blocked hose screens.
• Check for proper drain hose installation. Is water siphoning out of the drain hose? Drain hose must
not be more than 4.5" (113 mm) into drain pipe.
• Check connections from tub to air trap, air trap to pressure hose, and pressure hose to pressure sensor.
• See TEST #6 (Water Inlet Valves) on page 17.
• See TEST #7 (Pressure Sensor) on page 17.
F8E2 DISPENSER SYSTEM ERROR
Dispenser motor is unable to reach the desired position.
• Check the mechanical linkage from dispenser motor to top of dispenser.
• See TEST #12 (Dispenser Distribution System) on page 20.
F8E3 OVERFLOW CONDITION
The overflow condition occurs if there is too much water or foam in the washer and the overflow contact
on the pressure switch is closed for more than 2 minutes, 30 seconds or 5 times during the same cycle.
If overflow occurs, the valves are closed and the drain pump switches on for at least 30 seconds.
• Check inlet valves for proper shutoff.
• Verify that drain hose is not plugged or kinked.
• Check/clean drain pump filter of foreign objects.
• Check connections from tub to air trap, air trap to pressure hose, and pressure hose to pressure sensor.
• See TEST #6 (Water Inlet Valves) on page 17.
• See TEST #7 (Pressure Sensor) on page 17.
• See TEST #8 (Drain Pump) on page 18.
F8E4 FLOW METER FAULT
If less than 0.1L of water has entered the tub after 30 seconds from the start of the Quick Diagnostic Te st,
this error will be displayed. This error code is available only in service diagnostics.
• Is water supply connected and turned on?
• Check for blocked or kinked inlet hoses.
• See TEST #6 (Water Inlet Valves) on page 17.
• See TEST #9 (Flow Meter) on page 18.
F9E1 LONG DRAIN
If the drain time exceeds 4 minutes without reaching reset level in pressure sensor, the valves are turned
off and the drain pump will stop running. Note: Suds can cause delays in draining. Wa sher drains for
4 minutes, pau ses 5 minutes, then tries again for 4 additional minutes of draining. F9E1 will display if washe r
does not drain. (Normal drain takes less than 2 minutes)
• Verify that the drain hose is not blocked or kinked.
• Make sure drain hose is not sealed into drain pipe.
• Make sure the drain hose height does not exceed 96" (2.4 m).
• Check/clean drain pump filter of foreign objects.
• Check connections from tub to air trap, air trap to pressure hose, and pressure hose to pressure sensor.
• See TEST #8 (Drain Pump) on page 18.
Is pressure hose pinched, kinked, plugged, or leaking air?
Is pressure hose pinched, kinked, plugged, or leaking air?
Is pressure hose pinched, kinked, plugged, or leaking air?
F8E0 STEAM INLET VALVE ERROR
This error i s displayed when th e steam valve malfu nctions. This error can be seen only in service diagnostics.
• Is water supply connected and turned on?
• Check for blocked or kinked inlet hoses.
• Low water pressure or blocked hose screens.
• Check steam valve operation. See TEST #6 (Water Inlet Valves) on page 17.
• See TEST #16 (Diverter Valve Assembly) on page 24.
• See TEST #16 (Diverter Valve Assembly) on page 24.
• See TEST #16 (Diverter Valve Assembly) on page 24.
FAULT/ERROR CODES #3
PAGE 10
DO NOT REMOVE OR DESTROY
FOR SERVICE TECHNICIAN’S USE ONLY
PROBLEM POSSIBLE CAUSECHECKS & 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 UI. Check connections and harness continuity
between CCU and UI.
CCU problem.See TEST #1: CCU Power Check, pg. 13.
User interface problem.See TEST #2: User Interface, pg. 14.
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. 16.
Connections between CCU and UI. Check connections and harness continuity
between CCU and UI.
User interface problem.See TEST #2: User Interface, pg. 14.
CCU problem.See TEST #1: CCU Power Check, pg. 13.
Connections between CCU and UI. Check connections and harness continuity
between CCU and UI.
User interface problem. See TEST #2: User Interface, pg. 14.
CCU problem.See TEST #1: CCU Power Check, pg. 13.
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. 16.
Manually unlock door and reset washer.Manually unlock door and then disconnect
and reconnect power. Check door lock.
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. 16.
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 TESTS #6 & 16 (Inlet & Diverter Valves).
Dispenser system problem.See TEST #12: Dispenser Distribution System,
Detergent pump problem.See TEST #14: Detergent Pump, pg. 22.
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 TESTS #6 & 16 (Inlet & Diverter Valves).
Pressure sensor problem.See TEST #7: Pressure Sensor, pg. 17.
Drain hose/filter is plugged. Check for hose and drain filter obstructions.
Valve(s) not shutting off. See TEST #6: Water Inlet Valves, pg. 17.
Pressure sensor problem.See TEST #7: Pressure Sensor, pg. 17.
Drain pump problem.See TEST #8: Drain Pump, pg. 18.
Is door lock showing open during See TEST #4: Door Lock System, pg. 16.
Harness connections. Check harness continuity and connections
between CCU > MCU > and drive motor.
Motor problem.See TEST #3: Motor Circuit, pg. 15.
Mechanical friction. Check for obstruction between spin basket
and outer tub.
Harness connections. Check harness continuity and connections
between CCU > MCU > and drive motor.
Motor problem.
See TEST #3: Motor Circuit, pg. 15.
WON’T POWER UP
•
No operation
• No keypad response
• No LEDs or display
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 OVERHEAT S
DRUM WON’T ROTATE
OVERFILLS
WON’T DISPENSE
pg. 20.
the cycle?
(See p. 25 for manually
unlocking the door lock
system.)
No hot water dispensed. Ensure that household hot water is present
at the tap. Minimum 120°F (49°C).
Te mperature sensor problem.See TEST #11: Te mperature Sensor, pg. 19.
Heater element problem.
See TEST #10: Heating Element, pg. 19.
SANITIZE LED DOES
NOT TURN ON
Door has not been opened for 3
consecutive cycles.
Open and close door. Verify that cycle starts.
TROUBLESHOOTING GUIDE #1
DO NOT REMOVE OR DESTROY
PAGE 11
FOR SERVICE TECHNICIAN’S USE ONLY
PROBLEM POSSIBLE CAUSECHECKS & 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 continuity and connections
between CCU and drain pump.
Drain pump problem. See TEST #8: Drain Pump, pg. 18.
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 the tap. Minimum: 120°F (49°C).
Heating element problem.See TEST #10: Heating Element, pg. 19.
Te mperature sensor problem.See TEST #11: Te mperature Sensor, pg. 19.
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.
Clothes wet after cycle
is complete.
1. 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. Laundry not loaded properly.
4. See TESTS #6 & 16 (Inlet & Diverter Valves).
Not cleaning clothes.1. Laundry 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
Door switch problem.See TEST #4: Door Lock System, pg. 16.
Harness connections. Check harness continuity and connections
between UI and drum light.
Drum light problem.See TEST #5: Drum Light, pg. 16.
DRUM LIGHT DOES
NOT TURN ON
TROUBLESHOOTING GUIDE #2
PAGE 12
DO NOT REMOVE OR DESTROY
FOR SERVICE TECHNICIAN’S USE ONLY
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: CCU Power Check
This test checks for incoming and outgoing power
to and from Central 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 (IF) are securely connected.
See Figure 10, below.
4. Visually check that all connections to the
CCU (Figure 11) and Expansion Board (EB)
(Figure 15, page 21) are fully inserted.
Filter Output - Line (PK)
Filter Input - Power Cord Line (BK)
5. If both visual checks pass, go to step 6.
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 10.
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.
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. See Figure 11.
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.
Filter Output - Neutral (PK)
Filter Input - Power Cord Neutral (WT)
Figure 10 - Interference Filter (IF)
DI6-Detergent Dispenser Motor
DCS3-Door Closed Switch
Locking Tab
PS8-Pressure Sensor
SET2-Temperature
UIP3-Expansion
UI7-User Interface
Communications
to Expansion Brd
Figure 11 - Central Control Unit (CCU)
FM3-Flow Meter
Sensor
Brd Power
MI3-MCU
FAC3-Data
DL3-Door Lock Coil
DO NOT REMOVE OR DESTROY
DP2-Drain Pump
RP2-Vent Fan
VCH7-Hot/Cold Valves
VSF2-Steam Valve
MS2-MCU Power
IF2-Interference
Filter
DLS2-Door
Lock Switch
HE2-Heater
Element
HSG2-Expansion
Board
= pin-1
•
PAGE 13
FOR SERVICE TECHNICIAN’S USE ONLY
10. DC Supplies
• +5V DC is used to power IC’s and
processors on the circuit boards. If +5 V DC
was missing, the washer would become
unresponsive. To verify +5V DC ± 5%,
measure voltage at UI7 pin 7 (GND) to pin 2
(+5V [Vcc]). (Red lead to Vcc.)
• +12V DC is used to actuate most of the
120V AC relays, triacs, and switches on the
CCU. If +12V DC was missing, the motors,
valves, and pumps would not turn on. To
verify +12V DC ± 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 26 when troubleshooting the DC
supplies. If +5 or +12 V DC 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 page 6 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 7):
3None of the indicators or LCD turn on
3Some buttons do not light indicators
3No 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 & UI.
3. Visually check that all CCU connectors are
inserted all the way into the CCU. See Figure 11.
4. Remove console assembly. Be certain not to
pull on the wires between the console and CCU.
5. Visually check that all UI connectors are
inserted all the way into the UI. See Figure 12.
6. Visually check that the UI and housing
assembly is properly inserted into the front
console.
7. If all visual checks pass, perform
TEST #1: CCU Power Check, page 13,
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.
8. Reassemble all parts and panels.
Figure 12 - User Interface (Console, Modifier, and Center PCBs)
P09
P08
Modifier
PCB
P13
Maytag
Console
NOTE:
The User Interface (UI) must be replaced
as a single assembly. The UI includes the
Console, Modifier, and Center PCBs.
P13 (to Drum Light):
See TEST #5: Drum Light, page 16.
Pin 1: Drum_L_P
Pin 2: Open
Pin 3: Drum_L_N
P13
PAGE 14
P07
Modifier
PCB
P02 (to CCU):
P06
Center PCB
P09
P08
Pin 1: Standby
Pin 2: Ground
Pin 3: Data
Pin 4: Vcc (+5V)
Pin 5: Open
P02
Console Assembly
P07
P06
Whirlpool
Center
PCB
Console
DO NOT REMOVE OR DESTROY
P02
FOR SERVICE TECHNICIAN’S USE ONLY
Motor Harness
Windings
Pins 1 & 2
8.5 - 14.0 Ω
Pins 2 & 3
8.5 - 14.0 Ω
Pins 1 & 3
8.5 - 14.0 Ω
9. Plug in washer or reconnect power.
10. Perform the “UI Component Test”
(see page 7) to verify repair.
Some buttons do not light indicators:
1. Unplug washer or disconnect power.
2. Remove the top panel to access the CCU & 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 7) to verify repair.
No beep sound is heard:
1. Unplug washer or disconnect power.
2. Remove the top panel to access the CCU & UI.
3. Visually check that all CCU connectors are
inserted all the way into the CCU. See Figure 11.
4. Remove console assembly. Be certain not to
pull on the wires between the console and CCU.
5. Visually check that all UI connectors are
inserted all the way into the UI. See Figure 12.
6. If all visual checks pass, replace the UI
and housing assembly.
7. Perform the “UI Component Test”
(see page 7) to verify repair.
TEST #3: Motor Circuit
This test checks the motor, motor control unit
(MCU), and wiring.
IMPORTANT: A guide (W10271535) is
required to assemble the rotor onto the shaft.
The guide is inserted into the threaded hole,
and then the rotor is slid on over the guide.
From CCU MI3
(MCU Communications)
Figure 13 - Motor Control Unit (MCU)
To Motor
From CCU MS2
(MCU Power)
Locking
Tab
NOTE: If the harness between the CCU and
MCU is removed or communications are
interrupted during operation, the MCU puts
the motor into a braking mode, resulting in a
significant drag on the drum when turned by
hand. This mode can be cleared by manually
opening the door (see page 25) and removing
power from the washer for a few seconds.
1. Check the motor and electrical connections
by performing the “Quick Diagnostic Test” on
page 6. 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 13.
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 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.
DO NOT REMOVE OR DESTROY
PAGE 15
FOR SERVICE TECHNICIAN’S USE ONLY
Component
Door Switch DCS3-1 DCS3-3
DL3-1 DL3-2
DL3-2 DL3-3
Door Lock
Switch
DLS2-1 DLS2-2
Locked = Continuity
Unlocked = Open Circuit
Resistance
Lock Coil = 50–200
Ω
Door Lock
Coils
Contacts
Measured
DOOR LOCK RESISTANCE
Door Closed = Continuity
Door Open = Open Circuit
Lock Coil = 50–200
Ω
11. Run the “Quick Diagnostic Test” on page
6. 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 page 6 to verify repair.
TEST #4: Door Lock System
Perform the following test if “Door Status”
does not change under Component Activation
on page 7.
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 13.
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 and hold the START button
for 3 seconds. 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.
PAGE 16
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.
IMPORTANT: 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 page 6 to verify repair.
TEST #5: Drum Light
Perform the following test if the “Drum Light”
does not turn On or Off under Component
Activation on page 7.
1. Depending on brand, press or press and hold
the 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. See Figure 12,
page 14.
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, or press and hold the 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
DO NOT REMOVE OR DESTROY
FOR SERVICE TECHNICIAN’S USE ONLY
Valve Assembly Pinouts
Cold Fill ValveVCH7, pins 1 & 3
Hot Fill ValveVCH7, pins 5 & 7
Steam Valve VSF2, pins 1 & 3
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
3Water Inlet Valves – Test #6
3Pressure Sensor – Test #7
3Drain Pump – Test #8
3Flow 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 page 6. 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 13.
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 pinouts:
Resistance should be 890–1.1k Ω.
If resistance readings are outside the range
or open, replace the valve assembly.
If resistance readings are within range,
reconnect VCH7 and, if applicable, VSF2
to CCU. Go to step 4.
4. Plug in washer or reconnect power.
DO NOT REMOVE OR DESTROY
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 page 6
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 performing a Quick Diagnostic Test
on page 6. If a problem is detected during
the test, a pressure sensor error (F6E1) will
be triggered. The following steps assume
the sensor failed.
2. Run a DRAIN & SPIN cycle to remove all
water from the tub.
3. Unplug washer or disconnect power.
4. Remove top and rear panels to access tub,
air trap, and pressure hose connections. Pressure
sensor is located at top right rear of cabinet.
5. Check connections from tub to air trap,
air trap to pressure hose, and pressure hose
to pressure sensor.
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 air trap. 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 13). Also check that
the pressure sensor harness is securely
connected to the sensor.
PAGE 17
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