What happens when a blower resistor wears out?
What happens when a blower resistor wears out?
The change in resistance then limits the current through the motor, which dictates the speed at which the blower fan works. Blower resistors, being a mechanical component, are prone to wear and are the most common point of failure in a car’s heating system.
How does resistance affect the speed of a blower fan?
The lower the resistance of the selected resistor in a pack, the higher the current that flows through the blower fan, and the faster the fan will turn.
How is the speed of a blower motor controlled?
This means that the current running through the blower motor, and thus is speed is controlled by the resistor value. The user chooses a suitable fan speed by using a selector to connect one of the resistors in the blower resistor pack. Blower resistors are made of several resistors with different resistances.
What kind of controller does a W169 blower use?
1 .The W169 model A170/2007 in this article is equipped with an electronic controller (regulator) rather than a resistor bank, as used in the W168 models. If the control switch for the blower has only five or six positions, the use of a resistor bank affords simple control.
Where can I get a new blower motor resistor?
With over 1,000 blower motor resistors in stock, Autozone is ready to provide you with the blower you need, no matter what type of car or truck you drive. If you need a new blower motor resistor for your car or truck, shop with Autozone today to get a high quality replacement you can count on.
The change in resistance then limits the current through the motor, which dictates the speed at which the blower fan works. Blower resistors, being a mechanical component, are prone to wear and are the most common point of failure in a car’s heating system.
The lower the resistance of the selected resistor in a pack, the higher the current that flows through the blower fan, and the faster the fan will turn.
This means that the current running through the blower motor, and thus is speed is controlled by the resistor value. The user chooses a suitable fan speed by using a selector to connect one of the resistors in the blower resistor pack. Blower resistors are made of several resistors with different resistances.
