User Interface/Control System Test - Maytag W10393006 Service Manual

FOR SERVICE TECHNICIAN'S USE ONLY
 If no indicators come on after selecting the
cycle, go to TEST #1: CCU Power Check,
page 9.
Indication 2: Console indicators begin flashing
immediately.
Action: If console indicators begin flashing on
and off immediately, replace the user interface.
Activation with Saved Fault Codes
If there is a saved fault code, it will be
flashing in the display. Review the Fault/Error
Codes table on page 7 for the recommended
procedure. If there is no saved fault code,
"8:88" will be displayed.
USER INTERFACE/
CONTROL SYSTEM TEST
NOTE: The Service Diagnostic mode must be
activated before entering the User Interface/
Control System Test; see procedure on page 3.
Active Fault Code Display
in User Interface/Control System Test
If the display begins flashing while in User
Interface/Control System Test, it is displaying
an active fault code. Active fault codes are
codes that are currently detected. Only one
active fault code can be displayed at a time.
Entry Procedure
Press and release the 1
to activate Service Diagnostic mode.
The following tests will be available:
1. DIAGNOSTIC: Console Buttons
and Indicators
Pressing each button will toggle on and off its
corresponding indicator(s) or display segment
and sound a beep as shown in Figure 1, page 2.
Rotating the cycle selector knob toggles on and
off each corresponding cycle indicator.
NOTE: A second press of the "power/cancel"
button while in Console Buttons and Indicators
mode exits the Service Diagnostic mode and
returns the dryer to standby mode.
 If indicators do not turn off and beep
after pressing buttons and rotating the cycle
selector knob, go to TEST #6: Buttons and
Indicators, page 19.
PAGE 4
button used
st
2. DIAGNOSTIC: Console ID, Motor,
Heater, and Water Valve (if exists)
Make sure the door is closed, and then press
the "start" button. The dryer will beep and the
motor, heater, and water valve (if exists) will
turn on. The console ID will be displayed on the
LED (7:50, 8:00, 8:50, or 9:50). Opening the
door stops the motor, heater, and water valve.
 If the Console ID is not displayed, replace
the user interface and housing assembly.
 If the motor does not turn on, go to TEST
#3: Motor Circuit, page 12.
 If no heat is detected, go to TEST #4:
Heat System, page 13.
 If no water is detected, go to TEST #9:
Water Valve, page 20.
3. DIAGNOSTIC: Door Switch/Drum Light
Opening the door should display "p:7e" (electric)
or "p:79" (gas) and turn on the drum light.
Closing the door should turn off the drum light.
 If opening the door does not cause "p:7e"
(electric) or "p:79" (gas) to be displayed,
go to TEST #7: Door Switch, page 20.
 If opening the door does not turn on the
drum light, go to TEST #8: Drum Light,
page 20.
4. DIAGNOSTIC: Moisture Sensor
Open the door and locate two metal strips
on the face of the lint screen housing. Bridge
these strips with a wet cloth or a finger.
 If a repeating beep is heard and a number
is displayed on the console, the sensor
is good.
 If not, or if a beep tone is heard before
bridging the moisture strips, go to TEST #5:
Moisture Sensor, page 18.
Exit Procedure
To exit User Interface/Control System Test,
press the "power" button once or twice
(depending on diagnostic procedure).
DO NOT REMOVE OR DESTROY