Maytag MAT12PDSA Technical Information page 13

Component Testing Procedures
To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless
testing requires power.
TROUBLESHOOTING CONTROL BOARD FLOW CHART
Display is
Blank
Abnormal
display or
function
December 2003
!
Make sure washer
is plugged in to
live power source
No
Unplug washer and check
wiring and termination
between transformer, service
switch and control board
Initiate the manual
reset sequence
If problem still
exists replace
control board
Initiate the manual
reset sequence
WARNING
Enter operator mode
using service switch.
Does display contain a
diagnostic code?
Is voltage correct on
secondary side of the
transformer?
Yes
appear across the
Clean lint off of
control board
display wires.
13
Enter diagnostic
Yes code trouble
shooting guide
No
Does 115 VAC
primary of the
transformer?
No
Check wiring to
transformer and
power at outlet
Replace the transformer.
Inspect control board for
burned components and
replace it if damaged.
Shorted diodes will
damage new transformer.
If problem still
exists replace
control board
16022846 Rev 0
Yes