Alliance Laundry Systems CA050L - Motor Will Not Start;Run

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Micro Display Control (MDC) Troubleshooting
36.Motor Will Not Start/Run
Is there 24 VAC across
H2-1 and H2-6 on
the electronic control ?
YES
Replace MDC
Control.
Is there 24 VAC
across H2-4 and H2-6
on the electronic control?
Is there supply voltage
at terminal 5 of the
motor control relay?
Is there supply voltage
at terminal 8 of motor
control relay?
Is there supply voltage
across terminals 1 & 4
of the motor?
Does the motor
run?
Is there supply voltage
at terminal 6 of motor
control relay?
Is there supply voltage
at terminal 9 of motor
control relay?
Replace
control.
Correct wiring
between terminal 5
and power supply.
Replace motor
control relay.
Correct wiring
between motor
and motor control
relay.
Replace 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: Test conducted with vend
price satisfied and start button
pressed.
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 supply voltage
across L1 &
T1
and L2 &
T2?
Single phase
NO
YES
YES
NO
Three phase.
A
lso see Note on
next page.
Is unit equipped with
single phase or three
phase power supply?
Is there supply voltage
between L2 & L3 of
motor control relay?
Three phase.
Also
see Note on next
page.
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
NO
Refer to
Door Open
flow chart.
(1)
Is there 24 VAC
across the coil of
the motor control
relay?
Correct wiring to coil
of motor relay.
(2)
YES
NO
(3)
(4)
(5)
(6)
(7)
(8)
(10)
(11)
(12)
TMB2306S-
a
Gas, electric and steam heat.
Single and three phase power supply.
TMB2306S-a