Whirlpool MAT20CS Manual page 4

QUICK OVERVIEW TEST MODE (Page 8)
To access Quick Overview Test 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:
 "Final Spin" LED On
In Soak/
Use Wash
NOTE: Status LED names may vary between makes and models.
Press the START button to begin the Quick Overview test. See
page 8 for order of Quick Overview test.
U pon entering the Quick Overview test mode, the washer will

perform an automatic test with water cycles to check major
washer functions.
P ressing the START button will manually advance to the

next step.
P ress and hold the START button for 3 seconds at any time

to exit any test mode.
IMPORTANT: Lid must be closed with lid lock enabled
to perform test.
MANUAL OVERVIEW TEST MODE (Page 9)
To access Manual Overview Test 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:
 "Final Spin & Done" LEDs On
In Soak/
Use Wash
Press the START button to enter Manual Overview Test Mode.
See page 9 for Manual Overview Test Mode.
U pon entering the Manual Overview test mode, the washer

will have all outputs OFF.
T he cycle selector knob is used to select the output

to be tested.
T he START button will activate/deactivate the selected output.

W hen the selected output is activated, the corresponding

status LEDs flash ON & OFF.
P ress and hold the START button for 3 seconds at any time

to exit any test mode.
IMPORTANT: As a safety feature, the lid must be closed
with lid lock enabled to activate either Agitate or Spin Test.
NOTE: Multiple outputs may be activated simultaneously.
NOTE: Outputs left on will time-out after 5 minutes.
CALIBRATION MODE
IMPORTANT: The calibration mode calibrates the washer
and re-initializes the load sensing parameters for the washer.
Calibration must be performed when any of the following
components have been replaced: Main Control, Basket, Drive
Assembly, Suspension, Motor, and Capacitor. Calibration should
also be performed when the washer is moved to a different
location or, more specifically, to a different power socket/outlet.
Not performing calibration may result in poor wash performance.
To access Calibration 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" LED On
In Soak/
Use Wash
4
FOR SERVICE TECHNICIAN'S USE ONLY
Final
Rinse Spin Done
Final
Rinse Spin Done
Final
Rinse Spin Done
NOTE: Status LED names may vary between makes and models.
Press the START button to begin washer calibration. All status
LEDs will turn on.
D o NOT interrupt calibration, disturb washer, or remove

power; otherwise, calibration must be repeated.
L id must be down to perform test.

B asket must be empty to perform test (no water or clothes).

C alibration cycle runs for approximately 2–4 minutes.

Cycle completes when door unlocks and washer enters
standby mode.
DRAIN & SPIN CYCLE
To access Drain & Spin Cycle, 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 & Done" LEDs On
In Soak/
Use Wash
Press the START button to start the Drain & Spin Cycle.
UI (ROTARY SWITCH) TEST MODE
To access UI (User Interface) Test 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" LEDs On
(1)In (2)Soak/
Use Wash
NOTE: Status LED names may vary between makes and
models. Use LED # identifications.
Press the START button to begin the UI test.
U pon entering the UI test mode, all status LEDs will be

turned ON.
P ressing the START button will turn on and off all status

LEDs, or toggle the state of each status LED independently.
(Example: if 2 are on, and 3 are off, then 2 will be turned off
and 3 turned on.)
W hen toggling the cycle selector knob, each double click

will toggle the "Done" (5) LED.
T urning the rotary switch will toggle the following status LED

on and off.
• (1) In Use LED
P ress and hold the START button for 3 seconds.

W asher will exit UI test mode after 5 minutes of inactivity

or unplugging the mains lead.
F or more information, see TEST #4, NOTE 3 on page 16.

Final
Rinse Spin Done
(4)Final
(3)Rinse Spin (5)Done
DO NOT REMOVE OR DESTROY