What are the specific symptoms after the blower resistor is damaged?
1 Answers
Symptoms after the blower resistor is damaged include: air conditioning compressor failure and blower resistor failure. Main causes of blower resistor damage: Due to short circuits in the compressor or control circuit, or failures in the condenser motor, compressor electromagnetic clutch, or evaporator motor; The fuse of the car air conditioning fan does not meet the requirements, the current value is too small, there is a short circuit in the air conditioning system, or the compressor load is too large, which can also lead to blower resistor damage; Excessive current, poor heat dissipation, excessive internal resistance of the blower, loosening due to excessive flow resistance current, and shortened resistor lifespan. It is recommended to replace the blower. Methods to determine the condition of the blower resistor: The primary function of the vehicle blower resistor is to control the speed of the airflow. If it is damaged, the most noticeable symptom is the inability to adjust the speed of the central air conditioning. A detailed method to check is also very simple: prepare a multimeter, set it to the ohm range, place the multimeter's positive probe on the resistor's positive terminal and the negative probe on the negative terminal. Then check if the reading on the multimeter is normal. If the measured resistance value is 0, it indicates that the resistor is damaged. Maintenance methods for the blower resistor: Maintenance of the blower mainly includes daily inspection and maintenance of the electrical parts, daily inspection and maintenance of the mechanical parts, and periodic maintenance.