Troubleshooting guide

PAGE 3
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
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. 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 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 (3) buttons (except
POWER) 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 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 this test mode has been entered
successfully, all indicators on the console are
illuminated for 5 seconds with “888” 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 “888”.
NOTE: The Service Diagnostic mode will time
out after 5 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. Refer to Dryer
Disassembly Instructions, page 22.
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