52
70291301
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
31. Will Not Start/Continue Running – EDC Control (continued)
T030D
Is there voltage on B
terminal of motor
control relay?
Is there voltage to
terminal 5 of the
motor control relay?
Is there voltage to
terminal 8 of motor
control relay?
Is there voltage across
terminals 1 & 4 of
the fan motor?
Does the fan motor
run?
Is there voltage at
terminal 6 of motor
control relay?
Is there voltage at
terminal 9 of motor
control relay?
Correct wiring
between B and
H4-4.
Correct wiring
between terminal 5
and power supply.
Replace motor
control relay.
Correct wiring
between fan motor
and motor control
relay.
Replace fan motor.
Correct wiring
between terminal 6
of motor control
relay and supply.
Replace motor
control relay.
NO
YES
YES
YES
YES
YES
NO
NO
NO
NO
YES
YES
NO
NO
Note: Tests conducted with vend
price satisfied and start button
pressed.
Continued on next
page.
Correct wiring
between L1, L2 and
power supply.
Replace motor
control relay.
Is the unit equipped
with single phase or
three phase power?
Is there supply voltage
to L1 and L2 of the
motor control relay?
Is there votlage across
L1 & T1 and L2 & T2?
Single phase
NO
YES
YES
NO
Three phase.
Refer to Note
on next page
Three phase.
Refer to Note
on next page
Is unit equipped with
single phase or three
phase power supply?
Is there supply voltage
to L2 & L3 of motor
control relay?
NO
YES
Is there voltage across
terminals L2 & T2 and
L3 & T3?
Correct wiring
between L2, L3 and
supply.
Replace motor
control relay.
YES
NO
Single phase
T030D