Diagnostic Guide; Service Diagnostic Mode - Maytag W10393006 Service Manual

FOR SERVICE TECHNICIAN'S USE ONLY

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.
Is dryer vent properly installed and clear

of lint or obstructions?
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

dryer 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. Using an ohmmeter, 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 dryer with these tests
before going to specific troubleshooting tests.
1st Button
2nd Button
3rd Button
DO NOT REMOVE OR
SERVICE DIAGNOSTIC MENU TABLE
Button Press
- Momentary press
- Press and hold for 5 secs.
- Momentary press
- Press and hold for 5 secs.
- Momentary press
- Press and hold for 5 secs.
DESTROY
ACTIVATING SERVICE DIAGNOSTIC MODE
1. Be sure the dryer is in standby mode
(plugged in with all indicators off).
2. Select any three buttons (except POWER
and START) and follow the steps below, using
the same buttons. Remember the buttons and
the order that the buttons were pressed.
Within 8 seconds,
• Press and Release the 1
• Press and Release the 2
• Press and Release the 3
• Repeat this 3 button sequence 2 more times.
3. If the key sequence was entered
successfully, all indicators on the console
are illuminated for 5 seconds with "8:88"
showing in the "estimated time remaining"
three-digit display. If there are no saved
fault codes, all indicators on the console
will momentarily turn off, and then only the
seven segment display will come back on
and display "8:88".
NOTE: The Service Diagnostic mode will time
out after 10 minutes of user inactivity, or shut
down if AC power is removed from the dryer.
Unsuccessful Activation
If entry into diagnostic mode is unsuccessful,
refer to the following indications and actions:
Indication 1: None of the indicators or display turn on.
Action: Select any cycle.
 If indicators come on, try to change the
function for the three buttons used to activate
the diagnostic test mode. If any button is
unable to change the function, something
is faulty with the button, and it will not be
possible to enter the diagnostic mode using
that button. Replace the user interface and
housing assembly.
Function Behavior
- Activates User Interface/
Control System Test
- Exits Service Diagnostics
- Activates Install Diagnostics
- Software Version Display
- Displays Next Error Code
- Clears the Error Codes
selected button,
st
selected button,
nd
selected button;
rd
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