Can an Electric Vehicle Charger Still Charge If the Exhaust Fan Doesn't Spin?
2 Answers
An electric vehicle charger cannot charge if its fan is not spinning. Below are the relevant details: Checking the transistor: First, use a multimeter to measure whether the transistor controlling the fan is damaged. If the transistor is intact, the fan itself might be faulty. You can unplug the fan from the circuit board and connect it to a 12V DC power source (pay attention to the positive and negative poles) to see if it spins. Also, check for any foreign objects blocking it. Poor contact: If the fan starts spinning after wiggling its wires, it indicates a broken wire or poor contact inside the connector. If it still doesn't spin, the fan is definitely broken and needs replacement. For chargers with intelligent cooling systems, besides the above checks, also inspect whether the thermistor has poor contact, is damaged, or has loose solder joints. Note that this thermistor has a negative temperature coefficient, so replacement requires caution.
I once studied the cooling system of a charger. If the exhaust fan isn't spinning, although charging might still proceed at times, it's highly inadvisable to continue using it. The core function of the fan is heat dissipation. Should it stop, the internal temperature of the charger could skyrocket, potentially burning out circuits or even causing a fire. Common causes include dust clogging the fan, motor failure, or power supply line issues. Testing is straightforward: listen for the fan's operation. If it's not spinning, first power off and check for dust. If it still doesn't spin after cleaning, immediately stop charging and take it to a professional repair shop for inspection. Ignoring this risk not only damages the equipment but also endangers safety and affects the lifespan of the electric vehicle's battery. Regular maintenance and cleaning of the fan can prevent such issues, ensuring safe and efficient charging. In short, for safety's sake, fan issues must be taken seriously.
