PAGE 3
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DES
TROY
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.
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
st
selected button,
•
Press and Release the
2
nd
selected button,
•
Press and Release the
3
rd
selected button;
•
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.
Button Press
Function Behavior
1st Button
- Momentary press
- Press and hold for 5 secs.
- Activates User Interface/
- Exits Service Diagnostics
2nd Button
- Momentary press
- Press and hold for 5 secs.
- Activates Install Diagnostics
- Software Version Display
3rd Button
- Momentary press
- Press and hold for 5 secs.
- Displays Next Error Code
- Clears the Error Codes
SERVICE DIAGNOSTIC MENU TABLE
Control System Test
