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Section 3 Troubleshooting
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
9. NO MOTOR OPERATION WITH NO AC DRIVE FAULT
CFD2002S
1
The motor does not operate and
there are no apparent AC drive
faults present.
For
single-phase models, is
there voltage (200 Volts AC)
from L1 to L2 on the AC drive?
For 3-phase models, is there
voltage (200 Volts AC) from L1
to L2, from L1 to L3 and from
L2 to L3 on the
AC drive?
YES
2
3
Check for incoming voltage
from the main breaker to the
machine.
NO
Is the
drive system
(e.g., motor, belt,
pulleys) operating
properly?
Repair and/or replace the
drive system as needed.
NO
YES
Refer to the "No Motor
Operation (With AC Drive
Fault)" flowchart.
YES
Are
the wires on
the FREQ terminal
on the Main Board
connected
properly?
Repair and/or replace
the wires as needed.
NO
YES
Are the
following voltage (24 Volts DC)
readings present?
Forward Rotation (STF):
From the red/black wire to the brown wire.
From the red/black wire to the white wire.
Reverse Rotation (STR):
From the yellow/black wire to the brown
wire. From the yellow/black wire to the
white wire.
NO
Replace the main board.
NO
Check the AC drive parameter
settings.
Contact Alliance Laundry
Systems' Customer Service
Department for the parameter
setting for your machine.
YES
For 18, 25, 35 and 55 - pound capacity
models, are the following voltage (24 Volts
DC) readings present? NOTE: The readings
must be taken during a cycle.
Forward Rotation: From the stf to the white
wire and from the stf to the brown wire
Reverse Rotation: From the str to the white
wire and from the str to the brown wire
For 75, 100, 135 and 165 -pound capacity
models, are the following voltage (24 Volts
DC) readings present? NOTE: The readings
must be taken during a cycle.
Forward Rotation: From stf to ground
Reverse Rotation: From str to ground