After "24V DC Cooling Fan" Under normal circumstances, the water temperature reaches a predetermined temperature, the thermostat opens, the water tank is circulated, when the engine temperature reaches a certain temperature, by a sensor sensing the water tank electronic fan will turn. "24V DC Cooling Fan" at lower temperatures, the vehicles in the fan is rarely activated. If you do not feel normal, you can place the throttle 2500 rpm within a try, usually about 10 minutes under normal circumstances, the fan will rotate. The basic judgment in the vehicle in case of installation of the thermostat, the water temperature is not high or not boil, it should be no problem. Best to the service station to check the "24V DC Cooling Fan", and that the detector temperature measuring about.