Whirlpool WGD6400SW0 Tech Sheet

TECH SHEET - DO NOT DISCARD
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before
operating.
Failure to do so can result in death
or electrical shock.
IMPORTANT
Electrostatic Discharge (ESD) Sensitive
Electronics
ESD problems are present everywhere. ESD may
damage or weaken the machine control
electronics. The new control assembly may appear
to work well after repair is finished, but failure may
occur at a later date due to ESD stress.
Use an anti-static wrist strap. Connect wrist strap
to green ground connection point or unpainted
metal in the appliance
-OR-
Touch your finger repeatedly to a green ground
connection point or unpainted metal in the
appliance.
Before removing the part from its package,
touch the anti-static bag to a green ground
connection point or unpainted metal in the
appliance.
Avoid touching electronic parts or terminal
contacts; handle machine control electronics by
edges only.
When repackaging failed machine control
electronics in anti-static bag, observe above
instructions.
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? Time delay fuse?
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 ohms per volt DC or
greater.
Check all connections before replacing components.
Look for broken or loose wires, failed terminals, or
wires not pressed into connectors far enough.
A potential cause of a control not functioning is
corrosion on connections. Observe connections and
check for continuity with an ohmmeter.
Connectors: Look at top of connector. Check for
broken or loose wires. Check for wires not pressed
into connector far enough to engage metal barbs.
Resistance checks must be made with dryer
unplugged or power disconnected.
FOR SERVICE TECHNICIAN'S USE ONLY
DIAGNOSTIC TESTS
These tests allow factory or 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 THE DIAGNOSTIC TEST MODE
1. Be sure the dryer is in standby mode (plugged in with all indicators off,
or with only the Clothes Dry indicator on).
2. Select any one button (except Pause/Cancel) and follow the steps below,
using the same button (remember the button):
Press/hold Release for
2-5 seconds 2-5 seconds
3. If this test mode has been entered successfully, all indicators on the
console are illuminated for 5 seconds with
Time Remaining two-digit display.
DIAGNOSTIC: Unsuccessful Entry
If entry into diagnostic mode is unsuccessful, press the Pause/Cancel
button twice, then press the Power button.
If indicators come on, try to use a different button than was used to
activate the diagnostic test mode. If that button fails to enter the
diagnostic mode, something is faulty, and it is not possible to enter the
diagnostic mode. Go to TEST #2, page 6.
If no indicators come on after pressing the Power button, go to TEST #1,
page 6.
DIAGNOSTIC: Saved Fault Codes
If there are saved fault codes, the most recent fault code will alternately
show "F-" and "XX" where XX is the fault code.
Press and release the
same button used to beep tone
activate Diagnostics
Repeat beep tone
Repeat beep tone
Repeat All indicators momentarily turn off, then stay on.
DIAGNOSTIC: Console Buttons and Indicators
Pressing the console buttons or rotating the cycle selector will sound a
beep and will turn on or off the corresponding indicators as shown in
Figure 1, Console Diagnostics, page 2. Pressing Time Adjust
time) will sound a beep and turn the left digit of the display on or off.
Pressing Time Adjust (less time) will sound a beep and turn the right
digit of the display on or off.
If indicators fail to turn on or off and beep after pressing buttons or
rotating the cycle selector, go to TEST #6, page 9.
DIAGNOSTIC: Door Switch
Opening the door should cause a beep and an alphanumeric number to be
displayed. Closing the door should cause a beep and
If opening the door fails to cause a beep and a number and letter to be
displayed, go to TEST #7, page 10.
DIAGNOSTIC: Moisture Sensor
Open the door and locate two metal strips on the inside of the dryer. Bridge
these strips with a wet cloth or a finger.
If a continuous beep tone is heard and an alphanumeric number is
displayed on the console, the sensor is OK.
If not, or if a continuous beep tone is heard before bridging the moisture
strips, go to TEST #5, page 9.
Press/hold Release for
2-5 seconds 2-5 seconds
88
showing in the Estimated
Second most recent fault code is displayed.
Third most recent fault code is displayed.
Fourth most recent fault code is displayed.
88 to be displayed.
PART NO. W10054160
PAGE 1
Press/hold
2-5 seconds
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