See two attachments for greater detail:
1. Fan-coil - Unit Vent
2. Blower Coil
Motor Plug - Fan-coil
1- and 5- Line voltage
3 and 4 DC voltage (.7 to 3.8 VDC)
Motor Plug - Blower Coil
1, 7, 12 - Line voltage
3 and 4 DC voltage (.7 to 4.5 VDC)
Units with 1.5 or greater HP Motors
The drive converts the DC control voltage to AC
output power to the motor (150vac TO 250vac)
Measure AC voltage @ the 4-pin plug going to the motor.
Each leg to the green ground wire will need to have enough voltage to run the motor.
Not enough? Bad drive
Enough? Bad motor.