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© 2000 Maytag Appliances Sales Company
16023110
Section 9. Dryer Controls Overview
9-13
MDE/MDG6800, MDG5500
Diagnostic Codes
The Diagnostic Codes are identified when the severity
level of the abnormality detected is higher and service
may be required.
When a problem with the dryer is detected a Diagnostic
Code is assigned, and can be displayed. The Control
Board will not log multiple same codes per cycle;
however, it will log as many Diagnostics as possible for
the machine to continue running.
Accessing Diagnostic Codes with 13 Key Membrane
Press Air Fluff and Time (^) to enter Service Mode.
Press the Wrinkle Release key to access the
Diagnostic Codes. Scroll through the Diagnostic Codes
by pressing the Temperature (^) key. The first time the
key is pressed the newest code will be displayed. Each
additional key press shows the next code. Once all the
codes have been displayed a “
d
” is displayed and the
process repeats. If there are no Diagnostic Codes
available, “00” will be displayed for the Diagnostic Code.
Accessing Diagnostic Codes with 15 Key Membrane
Press Air Fluff and Time (+) to enter Service Mode.
Press the Wrinkle Release key to access the
Diagnostic Codes. Scroll through the Diagnostic Codes
by pressing the
Temperature (^)
. The first time the key
is pressed the newest code will be displayed. Each
additional key press shows the next code. Once all the
codes have been displayed a “d” is displayed and the
process repeats. If there are no Diagnostic Codes
available, “00” will be displayed for the Diagnostic Code.
There will be no multiple occurrences of either a
diagnostic code or help code generated in the same
cycle reported on the list. But if the same code occurs in
repeated cycles, it will be registered.
Clearing Diagnostic Codes
To clear the diagnostic code list press
Air Fluff and Wrinkle Release - 13 Key
or
Air Fluff
and
Wrinkle Release
- 15 Key
for 3 seconds while in diagnostic mode.
Diagnostic Codes
Code Description Trigger Action Taken
1
Dryer Thermistor
Short Sensed
The
thermistor
resistance is
very low,
with a
temperature
> 175
degrees.
Check for:
-
Clogged lint
screen.
-
Restricted
vent system.
Failed thermistor.
Code Description Trigger Action Taken
2
Thermistor Open
Sensed
The
thermistor
resistance is
very high
Check for:
-
Low ambient
temperature in
room (Below
50oF/10oC).
-
Outside vent
damper is stuck
open in
wintertime.
Loose or open wire
terminals
3
Door Circuit
Failure
Invalid state
for more
than 256
milliseconds
Check for:
- Loose or open wire
terminals in Door
Sense circuit.
4
Possible motor
transistor error
If either
motor
transistor is
seen open or
shorted
during
startup
Check for:
-
Loose
connections in
motor circuit.
-
Run System
Check Mode
and check the
motor relay
function.
-
If relay
functions,
disregard the
diagnostic
code.
If relay does not
function, replace
machine control
board.
5
Not Used
6
Non Volatile
Memory
Problem
Detected
with integrity
of
parameters
stored in
EEPROM
memory.
Disregard
8
Stuck Key A key is
sensed to be
pressed
more than
75 seconds,
the key shall
be assumed
to be stuck.
Run membrane pad
check and replace
console w/membrane
pad if necessary.
16023110