ALLIANCE T30 Series Troubleshooting Manual page 66

Electronic Control Troubleshooting
35. Will Not Run – Gas – Manual Timer (continued)
**
Is there voltage across
terminal 7 & 4 of the
motor control relay?
NO
Is there voltage at
terminal 5 on the
motor control relay to
to supply neutral?
YES
Is there voltage across
terminal 5 & 8 of the
motor control relay?
NO
Is there voltage across
terminals 1 & 4 of
fan motor?
YES
Tested with the start switch pressed in.
**
64
YES
Replace motor
control relay.
Correct wiring
NO
between terminal 5
and supply voltage.
YES
Replace motor
control relay.
Correct wiring
between fan
NO
motor and contact
8 on the motor
control relay.
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Does the fan motor NO
run?
YES
Note: Only for non time
delay machines
Is there
voltage across
terminals 3 & 5 of
YES
the fan motor
centrifugal switch with
the fan motor
running?
NO
Is there voltage to
NO
terminal 6 on the
motor control relay and
supply neutral?
YES
Is there voltage across
YES
terminal 6 & 9 of the
motor control relay?
NO
Is there voltage at
NO
terminals 1 & 4 of
the cylinder motor?
YES
Does the cylinder NO
motor run?
YES
The cylinder and
fan motors are
operational.
Replace the fan
motor.
Replace fan
motor.
Correct wiring
between terminal
6 and power
supply.
Replace motor
control relay.
Correct wiring
between cylinder
motor and contact
9 on the motor
control relay.
Replace the
cylinder motor.
T043D
T043D
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