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Troubleshooting
F232204R5
62
15. Overload Relay Tripping Repeatedly
Repeated overload tripping may result from a failed sinpac switch. Symptoms of a failed
sinpac switch may include motor humming without rotation during spin or high current during
running speed.
The overload relay is tripping
repeatedly.
Is the input voltage to
the machine between
208 and 240 Volts?
Consult the power
company in getting the
power turned down or
consult an electrician
about installing a
buckboost transformer.
No
Disconnect the power from the machine.
Remove the SS2 and SS3 wires from the
sinpac switch. Connect the two wires
together using a jumper wire. Re-connect
power to the machine. Make sure that the
machine's basket is fully loaded. Manually
engage the spin contactor. CAUTION: Do
not run the motor for more than 5 to 7
seconds. Does the motor spin?
One or more of the start
capacitors may have failed or
the wiring to the start capacitors
may be incorrect.
Perform a capacitance test on
the start capacitors and replace
them as needed.
Inspect the start capacitor wiring
and repair and/or replace the
wiring as needed.
Perform current measurements of the incoming power
leads as follows (measure both L1 and L2 at the same
time). Manually engage the spin contactor for 5 to 7
seconds to get the motor spinning. The current should
range from about 15 to 60 Amps, depending on the
machine's size and load conditions. Quickly remove the
connection between SS2 and SS3 while the motor is
still spinning at a high rate and then re-engage the spin
contactor. The motor should continue to spin at a high
speed and the current should drop down to between 3
and 8 Amps, depending on the machine's size and load
conditions. Does the motor maintain high speed and/or
does the current drop after disconnecting SS2 and
SS3?
Yes
Check the capacitor values and
the spin circuit wiring. Replace
the capacitors as needed.
Repair and/or replace the wiring
as needed.
No
Replace the sinpac switch.
Yes
Yes
Inspect the spin
contactor. While manually
pressing the contactor, do
all of the contacts
engage?
No
Replace the contactor.
Yes
No
CHM430S
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