Test #7: Door Switch (Acu) - Whirlpool 4.3 CU FT Service Manual

WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or
electrical shock.

TEST #7: Door Switch (ACU)

Attempt to perform Service Test Cycle on pages 3 and 4. If
the routine 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.
DOOR SWITCH/ACU
APPLIANCE
CONTROL
UNIT (ACU)
DOOR SWITCH - ACU
For Service Technician Use Only
2. Remove top panel, left side panel, and console to access
the machine electronics.
3. Check the ACU and door assembly:
a. Verify that the ACU is fully engaged with the front
panel (upper clips hooked to the ACU and ACU feet are
inside front panel slots).
b. Verify that there are no obstructions between the
white lever on the ACU and the door.
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 on the ACU when the door is closed.
¾ 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 ACU and visually inspect the white lever:
a. Verify that the white lever and switch are not broken or
damaged.
b. Verify that the ACU enclosure is closed, the spring is
present and in place, and the white lever is in place.
c. Check the functionality of the door switch by
attempting to activate it by pressing the white lever on
the ACU.
¾ Replace any damaged or missing parts. If the door
switch could not be activated in step c, replace the
ACU.
5. Reassemble all parts and panels.
6. Plug in dryer or reconnect power.
7. Perform the Service Test Cycle on pages 3 and 4 to verify
repair. If the failure persists, replace the ACU.
Figure 1- Door Switch Location
DOOR SWITCH LEVER - ACU
Whirlpool Compact Heat Pump Dryer
COMPONENT TESTING
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