Working principle and maintenance method of electronic fan.
How automotive electronic fans work
The working principle of the automotive electronic fan is mainly controlled by the thermostat. When the water temperature rises to the set upper limit, the thermostat will be switched on and the fan will start to work to help dissipate heat. Conversely, when the water temperature drops to the lower limit, the thermostat will cut off the power and the fan will stop working.
The maintenance method of automobile electronic fan
The common faults and maintenance steps of automotive electronic fans are as follows:
All function indicators are off, the fan is not running:
Maybe the DC power supply circuit is faulty. Power should be switched on, check the relevant circuit components, if found to be damaged or leakage, should be replaced in time.
The indicator light is on, the motor is difficult to start, but the fan blade can rotate normally after hand stirring:
This may be caused by a reduced capacity or failure of the starting capacitor. The starting capacitor should be checked and replaced.
The fan can occasionally operate:
Frequent operation may result in poor or damaged switch contacts. The corresponding switch should be replaced.
Fan does not turn:
First, check whether the fan blade is stuck, then check whether the circuit board sends a drive signal, and finally focus on checking the fan motor part, such as starting capacitors and windings.
In addition, for the maintenance and overhaul of the fan, the dust and debris of the fan should be cleaned regularly to keep the fan clean and well-ventilated to extend its service life. If the fan is faulty, contact professional maintenance personnel to repair it in time to avoid greater losses.
What's with the fan that keeps turning?
The reasons and solutions for the continuous rotation of the electronic fan: 1. Insufficient cooling water: the engine is overheated, and the electronic fan is always running. Car main coolant replenishment in time. 2. Water tank leakage: the engine overheats, the hose is loose or damaged, causing water leakage, and the electronic fan is always running. Owners can replace a water tank. 3. Thermostat failure: Due to the thermostat, when the temperature reaches the reference temperature, the water cannot be transported to the tank, or the water is too little, resulting in overheating of the engine and continuous operation of the electronic fan. The owner can go to the repair shop for inspection and repair. 4. The water temperature meter indicates high temperature: the high water temperature of the car is one of the reasons why the electronic fan keeps rotating. Keep the engine idle for a period of time, turn on the air conditioning warm air to the maximum position of the windshield, use the air conditioning warm air to help heat dissipation, and open the engine cover to help heat dissipation, and shut down the engine after the coolant temperature drops to the normal value. 5. The reason why the electric fan keeps turning is that the circuit is faulty. The car's electronic fan is controlled by a thermostat to keep the engine's water temperature from getting too high. It consists of sensors, electronic fans, chips, etc. Generally, when the water temperature exceeds 90 degrees, the sensor works, the electronic fan opens, and the water temperature drops. When the water temperature drops to the lower limit, the thermostat turns off the power and the fan stops working.
Where is the auto electronic fan temperature control switch?
The automobile electronic fan temperature control switch is in the central control position of the vehicle. The following is the relevant introduction of the temperature control switch: 1, the working range: car temperature control switch working range: 85~105℃. 2, composition: composed of wax temperature driving element and two contact action mechanism, the use of paraffin wax heated from solid to liquid volume suddenly increased to move the push rod, control the opening and closing of the contact. As the temperature of the coolant rises, the paraffin begins to expand, pushing the push rod through the rubber sealing film and overwhelming the spring frame. 3, function: the temperature control switch of the automobile air conditioner is used to adjust the main switch of the air conditioner is cooling or warm air, and the function of cooling and heating can be switched by rotating this switch.
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