Abbreviations; Diagnostic Guide; Service Diagnostic Mode; Activating Service Diagnostic Mode - Whirlpool WFC8090GX Service Manual

ABBREVIATIONS

ACU: Appliance Control Unit
HMI: Human-Machine Interface

DIAGNOSTIC GUIDE

Before servicing, check the following:
n Make sure there is power at the wall outlet.
n Has a household fuse blown, or circuit breaker or GFCI
tripped? Was a regular fuse used? Inform customer that a
time-delay fuse is required.
n Is cold water faucet open and water supply hose
unobstructed?
n Make sure drain hose is not sealed into drain pipe, and that
there is an air gap for ventilation.
n 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.
n Resistance checks must be made with washer/dryer
unplugged or power disconnected.
n IMPORTANT: Avoid using large diameter probes when
checking harness connectors as the probes may damage
the connectors upon insertion.
n 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.
n A potential cause of a control not functioning is corrosion
or contamination on connections. Use an ohmmeter to
check for continuity across suspected connections.
n IMPORTANT: Voltage checks must be made with all
connectors attached to the boards.

SERVICE DIAGNOSTIC MODE

Allows service personnel to run the Service Test Cycle to verify
inputs to the washer/dryer and functionality of the washer/
dryer control. You may want to do a quick and overall checkup
of the washer/dryer with this test before going to specific
troubleshooting tests.
ACTIVATING SERVICE DIAGNOSTIC
MODE - (2 Methods)
IMPORTANT: Use Service Diagnostic Mode without laundry in
the washer/dryer.
1. Be sure the washer/dryer is in standby mode (plugged in
with all indicators off).
2. Open and close the washer/dryer door.
3. Press and hold POWER until the washer/dryer display
turns on. After approximately 1 minute, the home screen
will display.
4. METHOD 1: (See Figure 1, page 2-2.)
Within 8 seconds,
- Press and release the HOME button (
- Press and release the FAVORITES button (
- Press and release the TOOLS button (
- Repeat this 3 button sequence 2 more times
For Service Technician Use Only
)
)
)
DIAGNOSTICS & TROUBLESHOOTING
The WARNING DIAGNOSTIC MODE screen will display.
Touch ENTER to enter diagnostic mode. The DIAGNOSTIC
HOME screen will be displayed. To continue with the tests
in Service Diagnostic Mode, see below.
METHOD 2:
a. Press the TOOLS button -
b. From the TOOLS menu, scroll down to "INFO."
c. From the INFO menu, select "SERVICE & SUPPORT."
d. From the SERVICE INFO screen, Press and hold the
DIAGNOSTICS button until the "ENTER PASSWORD"
screen is displayed.
e. From the ENTER PASSWORD screen, input "123, 123,
123," and press "ENTER."
f. The WARNING DIAGNOSTIC MODE screen will display.
Touch ENTER to enter diagnostic mode. The DIAGNOSTIC
HOME screen will be displayed. To continue with the tests
in Service Diagnostic Mode, see below.
Activation with Saved Fault Codes
If there is a saved fault code, the F number will be shown in
the display. Review the Fault/Error Codes beginning on page
2-6 for the recommended procedure and how to display saved
error codes.
To exit Service Diagnostic Mode, scroll to the top of the
DIAGNOSTICS HOME screen, press the < button in the top left
corner of the screen twice, and then press the HOME button.
NOTE: Service Diagnostic Mode times out after 5 minutes of
user inactivity.
Unsuccessful Activation
If entry into Service Diagnostic Mode is unsuccessful, refer to
the following indications and actions:
Indication 1: The display does not turn on.
Action: Make sure AC power is available to the washer/dryer.
Check user interface operation (see Test #2, page 3-6).
Indication 2: Display is on, but unable to enter Service
Diagnostic Mode.
Action: Press and hold POWER to turn off the washer/dryer
display. Wait 10 seconds. Press and hold POWER again to turn
on the washer/dryer display. Follow the Activating Service
Diagnostic Mode instructions on this page.

SERVICE DIAGNOSTIC MODE TESTS

NOTE: The Service Diagnostic Mode must be activated before
performing the tests; see procedure on this page.
Active Fault Code Display in Service Test Cycle
All indicators turn on and the display shows active fault code
"F#E#."
Exit Procedure
To exit the Service Test Cycle, scroll to the top of the
DIAGNOSTICS HOME screen, press the < button in the top left
corner of the screen twice, and then press the HOME button.
Whirlpool Smart All-In-One Washer & Dryer
n
2-3