On initial installation, motor fails to start up

Likely cause: Motor is incorrectly wired 

What to do: Verify that the motor is wired correctly. 

Likely cause: No output power from controller. 

What to do: Measure voltage coming from the controller. 

Likely cause: Motor is damaged and the armature is rubbing against the magnets. 

What to do: Disassemble motor and see if the armature can be realigned by reassembly. Motor may have to be replaced.