Maytag MDE/MDG21PDA Service Manual page 36

Troubleshooting Procedures
To avoid risk of electrical shock, personal injury or death, disconnect power to unit before servicing, unless testing
requires power.
Stack Dryer Diagnostic Code
d9
Voltage Problem
Less Than 90 VAC
d12 or d14 Motor
Sensed Problem
d16
PR Models Only
36
!
WARNING
Try to clear the
diagnostic code by
pressing the
Delicates keypad
for more than 1
second while the
code is displayed.
Check installation
to insure proper
power going to this
dryer. If d9
persist, check the
wiring or replace
the transformer
If problem persists replace
the control board.
d12 indicates
lower dryer motor
sense. d14
indicates upper
dryer motor sense
Is card reader
installed?
No
Install reader or use PDA to change mode out of
Gen 2 debit mode
16022904 Rev. 0
Exit service mode , and pause for
10 seconds, enter service mode.
Did the
diagnostic code
cancel?
No
Are other machines
No at this location giving a d9
diagnostic code?
Clear diagnostic
code by pushing a
Delicates keypad
for at least 1
second while code
is displayed.
False indication
control board
Check wiring
between debit
card reader
and control
board
Low voltage was
sensed on the
Yes
power line, but is
now ok.
Check installation
to insure proper
Yes
power going to all
of the dryers
Does
diagnostic code
remain?
No
Replace control
board
Power down and Replace card
up machine to reader or
reset card reader control board.
©2004 Maytag Appliances Company
Yes