ALLIANCE T30 Series Troubleshooting Manual page 61

33. Will Not Run – Electric – Manual Timer (continued)
Is unit single phase or
three phase?
Is there voltage to
terminal 6 on the
motor control relay?
YES
Is there
voltage across
terminal 6 & 9 of the
motor control relay?
NO
Is there voltage at
terminals 1 & 4 of
the cylinder motor?
YES
Does the cylinder
motor run?
YES
The cylinder and
fan motors are
operational.
70291301
Three phase.
Single phase.
Correct wiring
NO
between terminal
6 and power
supply.
YES
Replace motor
control relay.
Correct wiring
between cylinder
NO
motor and contact
9 on the motor
control relay.
NO Replace the
cylinder motor.
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Electronic Control Troubleshooting
Is there voltage to L2 NO
on motor control relay?
YES
Is there voltage to L3 NO
on motor control relay?
YES
Is there
voltage across
YES
L2 to T2 and L3 to
T3 on the motor
control relay?
NO
Correct wiring
between motor
control relay and
supply.
Correct wiring
between motor
control relay and
supply.
Replace motor
control relay.
T053D
T053D
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