3-6
n
Whirlpool Compact Heat Pump Dryer
COMPONENT TESTING
For Service Technician Use Only
TEST #2: Supply Connections (IF)
This test assumes that proper voltage is present at the outlet,
and a visual inspection indicates that the power cord is
securely fastened to the terminal block.
U.S. Installations:
1. Unplug dryer or disconnect power.
2. Remove the cover plate from the lower left corner of the
back of the dryer. See figure 1.
3$*(
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DES
TROY
¾
If +5VDC is still missing, unplug dryer or
disconnect power and replace the ACU.
¾
If +5VDC returns, unplug dryer or
disconnect power and check harnesses
and connections between the ACU and user
interface (UI). If acceptable, replace the UI.
8.
ACU +12VDC
– with voltmeter set to
DC
,
connect black probe to ACU J12-4 (ground)
and red probe to J12-2 (+12VDC). Plug in
dryer or reconnect power.
¾
If +12VDC is present, go to step 9.
¾
If +12VDC is not present, unplug dryer
or disconnect power and replace the ACU.
9.
Unplug dryer or disconnect power.
10.
Reassemble all parts and panels.
11.
Perform the Service Test Cycle
on pages 3 and 4 to verify repair.
TEST #2: Supply Connections
This test assumes that proper voltage is present
at the outlet, and a visual inspection indicates
that the power cord is securely fastened to the
terminal block.
U.S. Installations:
1.
Unplug dryer or disconnect power.
2.
Remove the cover plate from the lower left
corner of the back of the dryer. See figure 3.
3.
With an ohmmeter, check for continuity
between the neutral (N) terminal of the plug
and the center contact on the terminal block.
See figure 4a.
¾
If there is no continuity, replace the power
cord and test the dryer.
¾
If there is continuity, go to step 4.
4.
In a similar way, check which terminal of
the plug is connected to the left-most contact
on the terminal block and make a note of
it. This will be L1 (black wire) in the wiring
diagram. Follow the same procedure for L2
(red wire). See figure 4a.
¾
When this is found, go to step 5.
¾
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 J13-2 on the ACU.
¾
If there is continuity, go to step 7.
¾
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 UI.
9.
Reassemble all parts and panels.
10.
Plug in dryer or reconnect power.
11.
Perform the Service Test Cycle
on pages 3 and 4 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 4b, page 14.
Figure 4a - Plug-to-terminal connections
for electric dryer.
Power Cord
Plug
Terminal Block
Figure 3 - Remove the cover plate.
COM
N
L1
Figure 1
3. With an ohmmeter, check for continuity between the
neutral (N) terminal of the plug and the center contact on
the terminal block. See figure 2.
¾
If there is no continuity, replace the power cord and
test the dryer.
¾
If there is continuity, go to step 4.
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.
4. In a similar way, check which terminal of the plug is
connected to the left-most contact on the terminal block
and make a note of it. This will be L1 (black wire) in the
wiring diagram. Follow the same procedure for L2 (red
wire). See figure 2.
¾
When this is found, go to step 5.
¾
If neither of the plug terminals have continuity with
the left-most contact of the terminal block, replace the
power cord and retest dryer.
3$*(
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DES
TROY
¾
If +5VDC is still missing, unplug dryer or
disconnect power and replace the ACU.
¾
If +5VDC returns, unplug dryer or
disconnect power and check harnesses
and connections between the ACU and user
interface (UI). If acceptable, replace the UI.
8.
ACU +12VDC
– with voltmeter set to
DC
,
connect black probe to ACU J12-4 (ground)
and red probe to J12-2 (+12VDC). Plug in
dryer or reconnect power.
¾
If +12VDC is present, go to step 9.
¾
If +12VDC is not present, unplug dryer
or disconnect power and replace the ACU.
9.
Unplug dryer or disconnect power.
10.
Reassemble all parts and panels.
11.
Perform the Service Test Cycle
on pages 3 and 4 to verify repair.
TEST #2: Supply Connections
This test assumes that proper voltage is present
at the outlet, and a visual inspection indicates
that the power cord is securely fastened to the
terminal block.
U.S. Installations:
1.
Unplug dryer or disconnect power.
2.
Remove the cover plate from the lower left
corner of the back of the dryer. See figure 3.
3.
With an ohmmeter, check for continuity
between the neutral (N) terminal of the plug
and the center contact on the terminal block.
See figure 4a.
¾
If there is no continuity, replace the power
cord and test the dryer.
¾
If there is continuity, go to step 4.
4.
In a similar way, check which terminal of
the plug is connected to the left-most contact
on the terminal block and make a note of
it. This will be L1 (black wire) in the wiring
diagram. Follow the same procedure for L2
(red wire). See figure 4a.
¾
When this is found, go to step 5.
¾
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 J13-2 on the ACU.
¾
If there is continuity, go to step 7.
¾
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 UI.
9.
Reassemble all parts and panels.
10.
Plug in dryer or reconnect power.
11.
Perform the Service Test Cycle
on pages 3 and 4 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 4b, page 14.
Figure 4a - Plug-to-terminal connections
for electric dryer.
Power Cord
Plug
Terminal Block
Figure 3 - Remove the cover plate.
COM
N
L1
Figure 2
5. Remove the console to access the machine electronics
without disconnecting any wiring to the ACU.
6. Check for continuity between the L1 (black) terminal of
the plug and J13-1 on the ACU. See figure 3.
¾
If there is continuity, go to step 7.
¾
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. Check for continuity between the L2 (red) terminal of the
plug and J13-2 on the ACU. See figure 3
¾
If there is continuity, go to step 8.
¾
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.
8. Visually check that ALL connectors are fully inserted into
the ACU.
9. Visually check that ALL connectors are fully inserted into
the UI.
10. Reassemble all parts and panels.
11. Plug in dryer or reconnect power.
12. Perform the Service Test Cycle on pages 3 and 4 to verify
repair.
