From the service manual there is more to it but that was all I could put here.
Accessing Service/Diagnostic Mode:
Pressing down the damp dry
and time (-)
for 5 seconds places the machine in the
The following table lists the various tests
available while in the Service Mode, which
can be accessed by pressing the following
Press Keys Special Test/ Function
release Diagnostic Codes
Sequences up the
help/diagnostic code list
dryer temp(v) Sequences down the
help/diagnostic code list
time (-) Displays Software Revision
very dry(< ) View current cycle
Start or pause cycle running
but remain in Diagnostic
Accessing Diagnostic Codes
After the machine is in the diagnostic mode,
a ‘d’ will display and let the technician know
they are in the diagnostic mode. Pressing the
key will access the diagnostic
codes.The diagnostic codes can be viewed by
using the temperature (^) & (v) keys.
The down arrow key will sequence down the
list one each time it is pushed with no wrap.
The first time the down arrow key is pushed
the display will sequence to the next code
logged. The last code being displayed being
the oldest code. The up arrow will sequence
up the list one code each time it is pushed
until it reaches the top code. 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.
To clear the diagnostic code list
and very dry
(>) for 5
seconds while viewing the list.
System Check Mode
While in diagnostic mode, pressing the damp
and signal (+)
keys for 2 seconds, will
put the dryer into the system check mode.
"SC" will display.
This mode will allow the various inputs and
outputs to be controlled and viewed by the
technician by pressing individual keys. If no
activity is seen for 5 minutes after a key is
depressed, the control will reset back to the
normal mode. If no further activity is seen
after an additional 5 minutes the washer will
turn off. The following table lists the various
functions based upon on keys being depressed.
Membrane Pad Check
While in system check mode, pressing the
and sensor dry
keys for 5 seconds,
will start a membrane pad switch test.
The membrane check involves turning all the
embedded LED on the membrane pad on.
All the LED’s can be toggled off by pressing
the key associated with the LED. To exit the
test at any point, press the damp dry (>) &
sensor dry keys again for 5 seconds or press
the off key to exit diagnostic mode.
Key Pressed: Function Performed
Enable sensor dry circuit.
(sense dry LED) When short
circuit is detected across the
sensor bars the normal dry
LED will turn on.
Cycles the motor relay
on/off. When the motor is
running the start/pause LED
dry temp(^ )
If motor is running, cycles
the heater/gas valve on/off.
When the heater is regular
temp LED is on.
very dry(< )
View current cycle