System Check Mode Table; Service Mode - Maytag NED7200TW Technical Information

Troubleshooting
To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before servicing, unless
testing requires power.
Will Not Shut Off
• Short in Sensor Circuit.
• Check Membrane Pad.
• Check Electronic Control Board.
Troubleshooting the electronic
control circuit:
• Check for miswiring of the electrical connector at
the electronic control board.
Noisy and/Or Vibration
• Thumping Check for loose tumbler baffle, out-of-
round tumbler or high weld seam on tumbler.
• Ticking Check for loose wire harness or object
caught in blower wheel area.
• Scraping Worn tumbler front bearings.
• Roaring Check for blower wheel rubbing on
blower housing or bad motor bearings.
• Popping or squealing sound. Check for a sticky
or frayed belt.

Service Mode

This mode provides Service Personnel the ability to
verify the operation of the dryer.
The Service Mode can be implemented at any time,
including the middle of a dry cycle. While in the
Service Mode, the Technician can start special
diagnostic tests such as a System Check Mode, LED
Switch/Check, Display Software version number and
display diagnostic/help code listings.
Enter Service Mode:
Dryer must be on before Service Mode can be
entered. Press Chime and Temperature Keys for 3
seconds, or until 3 beeps are heard. The machine will
now be in Service Mode.
Upon entry into Service Mode, the Sensor Bar Touch
Data is to be displayed.
Exit Service Mode
Press the OFF key to exit Service Mode or repeat the
Chime and Temperature sequence.
Diagnostic Tests
The following table lists the various tests available
while in the Service Mode. Before advancing to the
temperature in next test, the current test running must be
terminated.
Press the following keys to access:
WARNING
Key Press
Wrinkle Prevent
Displays "d"
Then rotate the Cycle
Selector Knob
Temperature Key
Start/Pause
System Check Mode
While in Service Mode, pressing the
Time and Wrinkle Prevent keys for 3 seconds, will
put the dryer into the System Check mode and "in"
will display. The following table lists the various
functions based on the keys being pressed.

System Check Mode Table

Key Pressed:
Start/Pause rotary
selector dial
Rotate the Cycle Selector
Knob to Delicates
Rotate the Cycle Selector
Knob to Sensor
Dry
Rotate the Cycle Selector
Knob to Wrinkle Control
Rotate the Cycle Selector
Knob to Time Dry
3
Special
Test/Function
Display list of
diagnostic codes.
To sequence thru
the diagnostic
and help codes.
Display software
revision number
Start or pause cycle
running but remain in
diagnostic mode.
Display the number of
cycles ago the diagn-
ostic code occurred.
Function
Performed
Cycles the motor
on/off.
LED's and 7
segment display
flash.
View current
cycle
temperature in
Celsius.
Segment display
is "1" for sensor
bar short, "0" for
sensor bar open
View current
cycle
temperature in
Fahrenheit.
W10162408