13503201 HVAC Blower Motor Resistor

The function of the car blower is to blow the cold air above the evaporative box of the air conditioner, or the hot air from the warm water tank, into the car, and there is nothing in the blower, just a motor. Turn on the blower (air conditioner's blowing switch), if the temperature selection is the lowest temperature, the external circulation is the natural air temperature outside the car, but it will be slightly higher, because the air inlet of the external circulation of the air conditioner is basically at the lower edge of the front windshield and the engine compartment. In between, it will bring the temperature into the cabin. Turn on the air conditioner (A/C) switch. If it is an automatic air conditioner, the blower will automatically start to supply air; if it is a manual switch, generally the air conditioner compressor will start to work after the blower is turned on.

The air conditioner speed regulating resistor is installed and fixed in the air duct, so that when the blower is working, there will be wind to cool it. As long as the blower is running, there will be current flowing through the speed regulating resistor. At this time, the resistor body will heat up. There is a fuse on the resistor body. When the blower is blocked, short-circuited, or abnormally high current, the fuse will blow, and the blower will Can't work anymore. There is also a situation that the blower is abnormal and then stops rotating, causing the resistor body to not be cooled, and the heat of the resistor body cannot be dissipated in the next period of time, causing the fuse to blow.