Whirlpool WED99HEDC0, Technical Education

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TESTING
HybridCare™ Dryer with Heat Pump Technology
n
6-17
For Service Technician Use Only
TEST #6: Buttons and Indicators
This test is performed when any of the following situations
occurs during the “Console Buttons and Indicators Test” (see
page 5-3).
ü
None of the indicators or display turn on
ü
Some buttons do not light
ü
No beep sound is heard
None of the indicators or display turn on:
1. Unplug dryer or disconnect power.
2. Remove top panel to access the CCU and user interface (UI).
3. Visually check that ALL CCU connectors are inserted all the
way into the CCU.
4. Visually check that ALL UI connectors are inserted all the
way into the UI. See Figure 1 below.
5. Visually check that the UI and housing assembly is
properly inserted into the front console.
6. If all visual checks pass, perform TEST #1: CCU Power
Check, page 6-4, to verify supply voltages.
¾
If supply voltages are present, replace the user
interface and housing assembly.
¾
If supply voltages are not present, replace the CCU.
7. Reassemble all parts and panels.
8. Plug in dryer or reconnect power.
9. Perform the “Console Buttons and Indicators Test” (see
page 5-3) to verify repair.
Some buttons do not light:
1. Unplug dryer or disconnect power.
2. Remove top panel to access the CCU and user interface (UI).
3. Visually check that the UI and housing assembly is
properly inserted into the front console.
4. If visual check passes, replace the UI and housing assembly.
5. Reassemble all parts and panels.
6. Plug in dryer or reconnect power.
7. Perform the “Console Buttons and Indicators Test” (see
page 5-3) to verify repair.
No beep sound is heard:
1. Verify that the “Cycle Signal” volume is turned on. Press
the CYCLE SIGNAL button to adjust the volume level.
2. Unplug dryer or disconnect power.
3. Remove top panel to access the CCU and user interface (UI).
4. Visually check that ALL CCU connectors are inserted all the
way into the CCU.
5. Visually check that ALL UI connectors are inserted all the
way into the UI. See Figure 1 below.
6. If all visual checks pass, replace the UI and housing assembly.
7. Reassemble all parts and panels.
8. Plug in dryer or reconnect power.
9. Perform the “Console Buttons and Indicators Test” (see
page 5-3) 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.
Console Assembly
To Drum LED (J-11):
Pin 1: Drum LED_P
Pin 2: Drum LED_N
From CCU (J-17):
Pin 1: +5 VDC
Pin 2: DATA
Pin 3: 5V GND
Figure 1 - Console/UI Assembly
Speaker