An air conditioner occasionally runs into problems even with the most detailed care. One of the most frequently occurring problems you’ll find is a broken or faulty air conditioner fan. It’s odd: the compressor is running, and you can feel that cool air is produced inside the unit, but the air conditioner fan is simply not working. When this happens, it’s not possible for the cool air inside to be released into the surroundings. In this article, we’ll take you through some methods to help you understand potential reasons why your air conditioner’s fan is not working. Instead of going to an aircon repair service or choosing an aircon repair Singapore company, try these troubleshooting hacks first. Broken Thermostat Your unit’s thermostat is in charge of monitoring the air temperature. When it goes above a particular point, it fulfils its job by turning on a switch that will supply power to the fan and compressor. If this thermostat is broken, it can prevent the fan from working properly. You can check if the thermostat is defective or not by setting the air conditioner to cooling mode and using a tool like a multimeter to test whether the part is working. If it doesn’t show that it’s running, it’s most likely broken and requires a replacement. Broken Capacitor Like the thermostat, you can also use a multimeter to test whether it’s operating. If, in this mode, it does not present signs of continuity, you should consider replacing it. Broken Selector Switch Need to test whether the selector switch is broken? Simply make selections on the air conditioner unit’s control board to do so. If you find that the fan works immediately after you press a button, it means that it’s time to change the switch. However, if there’s smoke emitting from the switch, it’s a surefire sign that you should replace it right away. Faulty Fan Motor Turn the blade using your hand. Does it turn freely, or do you experience problems? If you’re unable to turn it freely, it means that the motor bearings are worn out. If this happens, you need to replace the part. If you can turn the blades, you should check the incoming power to the fan motor to test it. If the motor cannot run even if it’s powered on, you should replace it. Broken Thermistor The thermistor is a sensor that identifies the temperature of the air that an air conditioner releases. It’s linked to the control board and is typically dependent on the temperature. If the thermistor is faulty or broken, it often leads to the fan failing to operate. In order to assess whether the thermistor needs a replacement, use a multimeter to test whether it’s running or not. If it isn’t, it’s a signal to replace it.