Whirlpool MAT20CS Manual page 5

SOFTWARE VERSION DISPLAY MODE
To access Software Version Display Mode, perform steps 1 and 2
of Activating the Service Diagnostic Test Modes. Toggle the cycle
selector knob until the status LEDs correspond as follows:
 "Rinse, Final Spin, and Done" LEDs On
In Soak/
Use Wash
NOTE: Status LED names may vary between makes and models.
Press the START button to begin software display mode.
U pon entering the software version display mode, the

Major, Minor, and Test version numbers for the software are
displayed by alternating the state of the Status LEDs in one
second intervals; the process repeats following a pause.
T o calculate the number being displayed, add the
representative numbers together that are displayed at the
same time; see chart below for representative numbers.
F or example, if the s/w version is 02.01.07, the following
sequence would be displayed:
16
In Soak/
Use Wash
Press and hold the START button for 3 seconds at any time

to exit software version display mode.
FACTORY DIAGNOSTICS
This is for factory use only, as it runs the Factory Cycle
Template for testing the washer before it leaves the factory.
TACHOMETER VERIFICATION MODE
To access Tachometer Verification Mode, perform steps 1 and
2 of Activating the Service Diagnostic Modes. Toggle the cycle
selector knob until the status LEDs correspond as follows:
 "Soak/Wash and Done" LEDs On
In Soak/
Use Wash
NOTE: Status LED names may vary between makes and models.
Press the START button to begin tachometer verification mode.
T achometer verification uses the status LEDs to represent

the tachometer frequency (basket RPM).
F or example, slowly turn the basket by hand; as the basket
turns, the DONE, FINAL SPIN, RINSE, and SOAK/WASH
status LEDs will illuminate one at a time in a visually repeating
cycle. The LED timing is derived from the tachometer signal
itself.
P ress and hold the START button for 3 seconds at any time

to exit tachometer verification mode.
DO NOT REMOVE OR DESTROY
FOR SERVICE TECHNICIAN'S USE ONLY
Final
Rinse Spin Done
8 4 2 1
02
01
07
Final
Rinse Spin Done
Final
Rinse Spin Done
DRY FACTORY DIAGNOSTICS
This is for factory use only: to gather data when testing
the washer.
FACTORY CALIBRATION TEST
This is for factory use only: to gather data on specific
components when testing the washer.
CLEAN WASHER CYCLE
Puts washer into the Washer Cleanout Cycle. To access the
Clean Washer Cycle, perform steps 1 and 2 of Activating the
Service Diagnostic Test Modes. Toggle the cycle selector knob
until status LEDs correspond as follows:
In Soak/
Use Wash
NOTE: This cycle should not be used with anything still loaded
in the wash basket.
Final
Rinse Spin Done
5