KitchenAid KHEV01RSS - Pro Line Plus Electric Dryer, Техническое образование

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6-21
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.
1. Unplug dryer or disconnect power.
2. Remove the cover plate from the top right
corner of the back of the dryer.
3. Check that the power cord is firmly con-
nected to the dryer’s wire harness. See
Figure 3.
4. Access the machine control electronics
without disconnecting any wiring to the
control board. See Accessing & Removing
the Electronic Assemblies, page -6-28.
5. With an ohmmeter, check for continuity
between the neutral (N) terminal of the
plug and P2-2 (white wire) on the ma-
chine control board. The left-hand side of
Figure 4 shows the position of the neutral
terminal (N) on the power cord plug.
If there is continuity, go to step 6.
If there is no continuity, disconnect the
white wire of the harness from the pow-
er cord at the location illustrated in Fig-
ure 3. Test the continuity of the power
cord neutral wire as shown in Figure 4.
If an open circuit is found, replace the
power cord. Otherwise, go to step 6.
6. In a similar way, check the continuity be-
tween the L1 terminal of the plug and
P2-3 (black wire) on the control board.
If there is continuity, replace the control
board.
If there is no continuity, check the con-
tinuity of the power cord in a similar
way to that illustrated in Figure 4 but
for power cord L1 wire.
If an open circuit is found, replace the
power cord. Otherwise, go to step 7.
7. Replace the main wire harness.
•
•
•
•
•
Figure 3. Power cord-to-wire harness connection for gas dryer
COM
G
L1
L1
Power Cord Plug
N
G
Figure 4. Power cord terminals, gas dryer
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:
1. Unplug dryer or disconnect power.
2. Access the machine control electronics.
See Accessing & Removing the Electron-
ic Assemblies, page 6-28. Measure the
resistance across P2-2 and P2-5.
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 7-2.
•
•
–
Harness/connection
–
Drive Motor
– Motor Capacitor
–
Machine control electronics.
See ESD information, page 6-17.