41
IF THE MOTOR IS RUNNING
If the motor is running but there is an airflow issue
causing improper performance, undesired comfort or
HVAC System failure, check the following:
Confirm the proper HVAC System 24VAC thermostat
demand is connected to a
Low Voltage SIGNAL
(speed) tap.
Any voltage above 30VAC could
permanently damage the motor.
This voltage alone
will not operate the motor (See the Sequence of
Operation section on page 40). Confirm there is
proper 24VAC between the selected Low Voltage
SIGNAL (speed) tap and the BLUE Common tap on
the motor. (see schematic on page 40) If more or less
airflow is required, change this connection to a higher
or lower speed tap. If the highest or lowest speed
tap does not achieve the required airflow, the horse
power (Hp) selection may need to be adjusted. If
proper 24VAC is not present, troubleshoot the HVAC
System. Continue troubleshooting here if this does
not solve the problem.
CAUTION:
Adjusting the Horse Power (Hp) selection will
change the airflow value of all Low Voltage
SIGNAL (speed) taps. If the Hp selection is
changed, airflow in all demands will need to be
checked and adjusted as needed.
