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3-6
n
Whirlpool Smart All-In-One Washer & Dryer
COMPONENT TESTING
For Service Technician Use Only
TEST #2: Human-Machine Interface
(HMI)
This test is performed when any of the following situaons
occurs during the Service Diagnosc Mode Tests (see page
2-3): display does not turn on and/or no sound is heard.
1. Unplug washer or disconnect power.
2. Gently lay washer/dryer on its right side to access the
ACU. Remove AC shield and ACU cover.
3. Visually check that all ACU connectors are inserted all the
way into the ACU. See Figure 2, page 3-5.
4. Visually check that all HMI connectors are inserted all the
way into the HMI (see Figure 2 below).
5. If all visual checks pass, perform TEST #1: ACU Power
Check, page 3-4, to verify supply voltage and health of
micro-controller.
¾ If supply voltages are present and micro-controller
is funconing properly, replace the HMI and housing
assembly.
¾ If supply voltages are not present, replace the ACU.
6. Reassemble all parts and panels.
7. Plug in washer/dryer or reconnect power.
8. Perform the Service Diagnosc Mode Tests on page 2-3 to
verify repair.
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Failure to do so can result in death or
electrical shock.
Replace all parts and panels before operating.
HUMAN-MACHINE INTERFACE (HMI)
Figure 2 - Connector Locations on HMI
3$*(
¾
¾
¾
¾
ACU Input
(3 pin connector)
Speaker
Connector
To Drum LED
ACU HMI
CN1-1J16-4
GND
CN1-4
J16-3
+12.7 VDC
CN1-3J16-2
+5 VDC
CN1-2
J16-1
WIN
GND
OPEN
WIN
+12.7 VDC
Figure 1 - Human-Machine Interface (HMI) Strip Circuit
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