The “ECM Service Guide” is a free diagnostic and service booklet developed specifically for use with the GE ECM variable-speed blower motors used in HVAC applications. It shows service technicians how ...

The updated "Home Comfort Guide" is now available. It is a free diagnostic and service guide for use with the ECM variable-speed blower motor. The booklet shows techs how to properly diagnose, service ...

Speed, torque, and horsepower are three inter-related parameters in motor control. The speed of a motor, measured in revolutions per minute (rpm), defines a motor's ability to spin at a rate per unit ...

Prior to the advent of the adjustable-speed drive (ASD), the polyphase induction motor operated as a constant-speed motor. Figure 1 shows the well-known torque and current curves versus speed for the ...