Alliance Laundry Systems HC18MC2 - No Motor Function (OPL; Fw and Rev)

42 F232202
Troubleshooting
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9. No Motor Function (OPL; Fw and Rev)
YES
With the machine running the water valves on and the machine holding water (i.e., filling up), the basket has no wash function (i.e., fw or rev).
Note: Before proceeding to the next step, take voltage reading across wire 4 where it connects to the KM1 wash contactor and terminal strip 25
and also across terminal strips 25 and 29*. This is a test to check if the ACN (neutral) circuit is intact all of the way to KM1 wash contactor.
This will also test the function of the voltmeter.
If 120 Volts** are present on both readings, continue to the next troubleshooting step.
If 120 Volts** are not present on both readings, contact Alliance Laundry Systems’ Customer Service Department for assistance in locating
the broken circuit.
Is there voltage
(120 Volts** AC) at the
KM1 wash contactor
across wires 21 and 4?
YES
Check the KM1
wash contactor’s contacts
while the contactor is energized.
Check L1-T1, L2-T2 and L3-T3.
Do all three contactor legs
have the same voltage
on the input as
on the output?
NO
YES
Is the KM1
wash contactor
energized?
Replace the KM1 wash contactor.
Replace the KM1 wash contactor.
With the KM1
wash contactor energized
and the motor leads disconnected
from terminals 22, 23 and 24, is there
voltage (120 Volts** AC) from terminal
22 to terminal strip 29*, terminal 23
to terminal strip 29* and
terminal 24 to terminal
strip 29*?
Check the connection from
terminals 22, 23 and 24
to the KM1 wash contactor.
Replace or repair the wires
and/or wire ends as needed.
Inspect the three motor leads that connect terminals 22, 23 and 24 to the
M1 motor, checking for broken and/or shorted leads. Replace or repair the
wires and/or wire ends as needed.
If the wires are intact, assuming that all checks were done properly, replace
the motor or contact Alliance Laundry Systems’ Customer Service
Department to verify that all checks have been done correctly.
YES
Is there voltage
(120 Volts** AC)
from wire 21 to
terminal strip 29*?
NO
Inspect wire 21 and repair and/or
replace it as needed.
YES
Is there voltage
(120 Volts** AC)
from wire 12 to
terminal strip 29*?
NO
Replace the KM2 spin contactor.
Is there voltage
(120 Volts** AC)
from 16b on the
timer to terminal
strip 29*?
NO
Check the connection from
16b on the timer to the KM2
spin contactor.
Replace or repair the wires
and/or wire ends as needed.
YES
If the wire is intact, assuming that all checks were done
properly, replace the timer or contact Alliance Laundry
Systems’ Customer Service Department to verify that
all checks have been done correctly.
NO
NO
NO
YES
No Motor Function (OPL; Fw and Rev)
*Note: All voltage readings should be taken from terminal 29 as a neutral point.
**Note: All voltage readings are approximate.
***Note: Refer to the Contactor Schematic.
CHM249S
5A***
3A***
2A
4A***
6A***
7A
9A
10A
8A
1A