40
IF THE MOTOR IS NOT RUNNING
(continued)
Final Diagnosis – If there is a 115VAC demand on one
or more of the High Voltage SIGNAL connections,
the correct Line Voltage Jumper is installed, there
is proper voltage on the High Voltage POWER
connections and the motor is not operating, replace
the motor.
Sequence of Operation
A
Low Voltage SIGNAL
demand from the HVAC
Systems thermostat connection alone will not
operate the motor. The motor will turn on when it
receives its
High Voltage SIGNAL
demand from the
HVAC Systems fan controls (fan relay or circuit board)
connections. The
High Voltage POWER
connections
must be powered continuously from the proper line
voltage. Constant fan operation does not require
a Low Voltage SIGNAL demand. The special low
constant fan speed will operate with a High Voltage
SIGNAL demand alone.
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