Blower Motor Speed Control

Blower Speed Controller:

DESCRIPTION
The function of the blower speed controller is to convert low power signals from the EATC control assembly to a high current, variable ground feed for the blower motor.

OPERATION
Blower motor speed is infinitely variable and is controlled by the electronic control assembly software and blend door actuator position. A delay function provides a gradual increase or decrease in blower motor speed under all conditions. There is a high blower relay integrated into the blower speed controller which provides power for maximum air flow in the HI blower position.

CAUTION: The system should not be operated with the blower motor disconnected. Damage may occur to the electronic blower speed controller if cooling air is not provided by the blower motor.