Troubleshooting Tests - KitchenAid Pro Line KHEV01RSS Technical Education

TROUBLESHOOTING TESTS

NOTE: These checks are done with the dryer
unplugged or disconnected from power.
TEST #1 Supply Connections
This test assumes that proper voltage is pres-
ent at the outlet, and visual inspection indi-
cates that the power cord is securely fastened
to the terminal block.
1. Unplug dryer or disconnect power.
2. Remove the cover plate from the top right
corner of the back of the dryer.
3. With an ohmmeter, check for continuity
between the neutral (N) terminal of the
plug and the center contact on the termi-
nal block. See Figure 3.
• If there is no continuity, replace the
power cord and test the dryer.
• 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. See Figure 3.
•
When this is found, go to step 5.
• If neither of the plug terminals have
continuity with the left-most contact of
the terminal block, replace the power
cord and test the dryer.
Neutral
Ground
Wire
Power Cord
Plug
N
COM
Figure 3. Plug-to-terminal connections.
L1
Terminal
Block
5. Access the machine control electronics
without disconnecting any wiring to the
control board. See Accessing & Remov-
ing the Electronic Assemblies, page 6-12.
6. With an ohmmeter, check for continu-
ity between the L1 terminal of the plug
(found in step 4) and P2-3 (black wire) on
the machine control board.
• If there is continuity, go to step 7.
• If there is no continuity, check that wires
to the terminal block are mechanically
secure. If so, replace the main wire har-
ness and test the dryer.
7. Check for continuity between the neutral
(N) terminal of the plug and P2-2 (white
wire) at the control board.
• If there is continuity, go to step 8.
• If there is no continuity and the mechan-
ical connections of the wire are secure,
replace the main wire harness.
8. If the dryer still does not operate, replace
the machine control electronics. See Ac-
cessing & Removing the Electronic As-
semblies, page 6-12.
TEST #2 Drive Motor Circuit
This test will check the wiring to the motor and
the motor itself. The following items are part
of this system:
–
Harness/connection
– Drive Motor
– Motor Capacitor
1. Unplug dryer or disconnect power.
2. Access the machine control electronics
and measure the resistance across P2-2
and P2-5. See Accessing & Removing the
Electronic Assemblies, page 6-12.
• If resistance across P2-2 and P2-5 is
in the range of 1–6 ohms, replace the
machine control electronics.
• Otherwise, go to step 3.
3. Check the wiring and components in the-
path between these measurement points by
referring to the wiring diagram on page 7-1.
6-6
–
Machine control electronics.
See ESD information, page 6-2.