Blower Motor Fan Resistor. How To Test A Blower Motor Resistor With A Multimeter at Karen Carter blog If the resistor fails, the blower motor fan may continue to run even when the engine is turned off, which can drain the battery and cause the engine to overheat The most common symptom of a failed blower motor resistor is when the heater fan only runs at the highest speed setting (4 or 5) and doesn't work at low speeds.
What Is a Blower Motor Resistor? from knowhow.napaonline.com
The blower motor resistor is an electrical component that controls the fan speed of the blower by sending an alternating current from the fan speed control switch on your dashboard to the blower motor fan located in the HVAC housing If the resistor fails, the blower motor fan may continue to run even when the engine is turned off, which can drain the battery and cause the engine to overheat
What Is a Blower Motor Resistor?
The higher the resistance, the slower the fan goes, resulting in less airflow, either cold or hot The blower motor resistor is an electric part that blocks or resists the flow of current to the blower fan motor In those applications, the HVAC control head is a digitally.
Blower Motor Resistor Operation. By limiting electrical current to the blower motor, resistors regulate fan speed Instead, they use a blower motor speed control or a power transistor
How To Reset Blower Motor Resistor. Blower motor wiring diagram for variable speed systems Because of this resistor, the fan speed can be changed from low to high and everything in between