The heater blower motor reduces or increases ... one speed remaining operable – usually the highest speed. When a blower resistor fails, the highest fan speed usually is the only one that ...

Adjusting the fan speed sends a signal through a resistor to the blower motor to either pick up the pace or slow it down. The blower motor resistor adjusts the amount of current going to the ...

The resistor module raises or lowers the current being sent to the blower motor, and the air starts to flow as a soft breeze ...