What is the reason for the New Santana's fan running continuously?
2 Answers
The reason for the New Santana's fan running continuously is to cool down the engine. Working Principle: The working principle of the cooling fan is achieved through energy conversion, namely electrical energy → electromagnetic energy → mechanical energy → kinetic energy. Its circuit principle generally comes in various forms, and the performance of the fan varies depending on the circuit used. Classification: Cooling fans are divided into axial fans and centrifugal fans. The blades of an axial fan push air to flow in the same direction as the axis. The impeller of an axial fan is somewhat similar to a propeller; during operation, the majority of the airflow moves parallel to the axis, meaning along the axial direction. The power consumption of an axial fan is lowest when the inlet airflow is free air at 0 static pressure, and it increases as the back pressure of the airflow rises during operation. Axial fans are usually installed on the cabinets of electrical equipment and are sometimes integrated into motors. Due to their compact structure, axial fans save a lot of space and are easy to install, making them widely used. When a centrifugal fan operates, its blades push air to flow in a direction perpendicular to the axis (i.e., radial direction). The intake is along the axial direction, while the exhaust is perpendicular to the axial direction. In most cases, an axial fan can achieve the desired cooling effect. However, if the airflow needs to be rotated 90 degrees for exhaust or if higher air pressure is required, a centrifugal fan must be chosen. Strictly speaking, blowers also belong to the category of centrifugal fans.
As a car enthusiast, I once experienced the issue of the New Santana's fan running non-stop. At that time, the fan kept whirring loudly. Initially, I thought it was caused by engine overheating, but upon further investigation, I realized there could be multiple reasons. The core causes are often a faulty temperature control switch or relay failure, which sends incorrect signals to the fan, causing it to run continuously. Another possibility is a malfunctioning coolant temperature sensor—when the coolant level is low, the sensor might misjudge the temperature as high and continuously drive the fan. Wiring issues like aging or short circuits, or a control module bug, could also trigger this problem. This issue shouldn’t be taken lightly—a continuously running fan can drain the battery and even affect the air conditioning system. I recommend starting with simple checks: turn off the engine and see if the fan stops; if it does, it’s likely a relay issue; if not, it might be the sensor or coolant. During actual repairs, use diagnostic tools to test system voltage, and don’t cut corners—take the car to a 4S shop promptly. Regular checks of the sensor and coolant levels can prevent problems and avoid breakdowns during trips.
