Whirlpool W11440958 Technical Manual page 25

Test #6: Buttons and Indicators
This test is performed when any of the following situations
occurs during step S01 of the Service Test Cycle (see
• None of the indicators or display turn on
• Some buttons do not light
• No beep sound is heard
None of the indicators or display turn on:
1. Unplug dryer or disconnect power.
2. Remove top panel, left side panel, and console to access
the ACU and HMI.
3. Visually check that ACU connectors are inserted all the way
into the ACU.
4. Visually check that HMI connector is inserted all the way
into the HMI. Check for continuity in the HMI harness. If
there is no continuity, replace the harness.
5. Visually check that the HMI and housing assembly is
properly inserted into the front console.
6. If all visual checks pass, perform Test #1: ACU Power Check,
page 3-5, to verify supply voltages.
n If supply voltages are present, replace the HMI and
housing assembly.
n If supply voltages are not present, replace the ACU.
7. Reassemble all parts and panels.
8. Plug in dryer or reconnect power.
9. Perform step S01 of the Service Test Cycle on
verify repair. If it does not pass the test, replace the HMI.
Some buttons do not light:
1. Unplug dryer or disconnect power.
2. Remove top panel, left side panel, and console to access
the ACU and HMI.
3. Visually check that the HMI and housing assembly is
properly inserted into the front console.
4. If visual check passes, replace the HMI and housing
assembly.
5. Reassemble all parts and panels.
6. Plug in dryer or reconnect power.
7. Perform step S01 of the Service Test Cycle on
verify repair. If it does not pass the test, replace the HMI.
No beep sound is heard:
1. Unplug dryer or disconnect power.
2. Remove top panel, left side panel, and console to access
the ACU and HMI.
3. Visually check that ACU connectors are inserted all the way
into the ACU.
4. Visually check that HMI connector is inserted all the way
into the HMI.
5. If all visual checks pass, replace the HMI and housing
assembly.
6. Reassemble all parts and panels.
7. Plug in dryer or reconnect power.
8. Perform step S01 of the Service Test.
9. Cycle on
page 2-3 to verify repair. If it does not pass the
test, replace the HMI.
For Service Technician Use Only
page 2-3).
page 2-3 to
page 2-3 to
COMPONENT TESTING (Cont.)
Test #7: Door Switch
Attempt to perform Service Test Cycle on
is unable to start, the dryer is detecting an open door. Open and
close the door again. If Service Test Cycle still will not start, try to
start a dryer cycle. If pressing START produces an invalid sound
and the START light blinks, the dryer is detecting an open door.
If dryer runs with the door open during the Service Test Cycle or
when running a dryer cycle, there is a short in the circuit.
If any of the preceding conditions are true:
1. Unplug dryer or disconnect power.
2. Remove top panel, left side panel, and console to access
the machine electronics.
3. Check the door assembly:
a. Verify that the post in the door is in place and has not
been broken off or removed.
b. Verify that the door switch mechanically works and the
switch clicks when the level is pressed inwards.
c. Verify that the door assembly is aligned with the door
latch.
d. Verify that there is physical contact of the door with the
white lever when the door is closed.
n If there was a problem with any of the above, go to
step 4. If the visual checks above are OK, reassemble all
parts and panels.
4. Remove the door switch and visually inspect the white
lever:
a. Verify that the white lever and switch are not broken or
damaged.
b. Verify that the door switch, spring is present and in
place, and the white lever is in place.
n Replace any damaged or missing parts.
5. Reassemble all parts and panels.
6. Plug in dryer or reconnect power.
7. Perform the Service Test Cycle on
If the failure persists, replace the ACU.
Test #8: Drain System
This test is performed when "water tank full" indicator is
displayed and never turns off (no error code is displayed).
The following items are part of this system:
Part of Drain System
Harness/connection
Drain pump
Water Level Sensor
Machine control electronics
1. If there is water beneath the front of the dryer, verify
that the dryer is level and that the drain hose is securely
fastened to the drain port.
2. Verify that the drain hose (bottom center of back of dryer)
is not pinched, kinked, plugged, or otherwise restricted.
3. Unplug dryer or disconnect power.
4. Remove top panel, left side panel, and console to access
the machine electronics.
5. Verify visually that ACU connections CN09 is connected
properly.
6. Verify AC voltage according to Test #1: ACU Power Check,
page 3-5.
Whirlpool 24" Compact Condensing Dryer
®
page 2-4. If the routine
page 2-4 to verify repair.
Electric Dryer




3-9
n