Maytag MDE/MDG21PDA Service Manual page 24

Troubleshooting Procedures
To avoid risk of electrical shock, personal injury or death, disconnect power to unit before servicing, unless testing
requires power.
Single Dryer Troubleshooting Guide
Will not
respond to
handheld
PDA
Will Not Keep
Time Of Day
During Power
Interruptions
A battery must be installed
in order to keep time of day
during power interruptions.
No Decimal
Point Is Used
In The Price
Display
Dryer
Check for exhaust
Dries Too
Slowly
24
!
Does PDA
respond to other
machines?
No
PDA has failed.
Is a battery
Yes
installed?
No
Yes
Is Add coins mode
selected?
No
restriction
16022904 Rev. 0
WARNING
Check optic
window for
Yes
obstructions, dirt,
or scratches.
If problem still
exists replace
control board
Does greater than
3.4VDC appear
between the red
and black wires of
the battery?
Yes
Check battery
connector and
termination
Normal operation. Add coins mode
is used in some countries as
needed based on local coin
denominations.
Go to the section "Abnormal
Display Or Function"
No Replace Battery
If problem
persists, replace
control board.
If add coins mode is
not desired, deselect
it in service mode.
©2004 Maytag Appliances Company