For Service Technician Use Only
COMPONENT TESTING
(
Cont.
)
3-6
n
Whirlpool
®
24" Compact Condensing Dryer
n
If neither of the plug terminals have continuity with the
left-most contact of the terminal block, replace the
power cord and retest dryer.
5.
Remove the console to access the machine electronics
without disconnecting any wiring to the ACU.
6.
Check for continuity between the L2 (red) terminal of the
plug and CN03 - 2 on the ACU.
n
If there is continuity, go to step 7.
n
If there is no continuity, and the mechanical connections
of the wire are secure, check for continuity at the
IF – RFI. If there is no continuity, replace the harness
between the ACU and the IF – RFI and the IF – RFI itself.
7.
Visually check that all connectors are fully inserted into the
ACU.
8.
Visually check that all connectors are fully inserted into the
HMI.
9.
Reassemble all parts and panels.
10.
Plug in dryer or reconnect power.
11.
Perform the Service Test Cycle on
to verify repair.
Canadian Installations:
1.
Unplug dryer or disconnect power.
2.
Access the machine electronics without disconnecting any
wiring to the ACU.
3.
With an ohmmeter, check the continuity from L1 and L2
plug terminals of the power cord to the terminals for L1 and
L2 on the ACU. See figure 3b.
n
If continuity exists for both connections, go to step 5.
n
If an open circuit is found, check the integrity of
the connections of the power cord to the harness
in the dryer; harness to the ACU; and the integrity of
the power cord itself.
4.
If it is necessary to replace the power cord, remove the
retaining clip that secures the cord to the back panel.
Disconnect the cord from the main harness and the ground
wire from the rear panel, then pull out the power cord.
5.
Visually check that all connectors are fully inserted into the
ACU.
6.
Visually check that all connectors are fully inserted into the
HMI.
7.
Reassemble all parts and panels.
8.
Plug in dryer or reconnect power.
9.
Perform the Service Test Cycle on
to verify repair.
Test #3: Motor Circuit
This test will check the wiring to the motor and the motor itself.
The following items are part of this motor system:
Part of Motor System
Electric Dryer
Drum belt
Door switch
Harness/connection
Drive motor
Machine control electronics
NOTE:
Verify motor movement in steps S02 and S03 of Service
Test Cycle (
). If no motor movement, proceed with the
following procedure.
1.
Unplug dryer or disconnect power.
2.
Remove top panel, right side panel, and console to access
the machine electronics.
3.
Door Switch problems can be uncovered by following
procedure under Test #7: Door Switch,
9
.
4.
Check the wiring and components: Check for loose, worn,
or damaged drum belt—repair as necessary. Also verify
that the spring and support structure is in position and in
good condition. Make sure there is no obstruction to drum
movement. Check CN13 and CN05 connections on ACU to
motor. Check continuity. If there is no continuity, replace
the wiring harness. If there is continuity, replace the drive
motor.
5.
Reassemble all parts and panels.
6.
Plug in dryer or reconnect power.
7.
Perform the Service Test Cycle on
to verify repair.
Power Cord
Plug
Terminal Block
N
L1
COM
Figure 3a - Plug-to-terminal connections for electric dryer
ACU
Power Cord
Plug
L1
L2
COM
L2
L1
Figure 3b - Plug-to-terminal connections for electric dryer
