Central Air Conditioner Blower Fan Not Working

When the air temperature rises above a set point the thermostat activates a switch to provide power to the fan and compressor.

Central air conditioner blower fan not working.

An air conditioner contactor is an electrical switch that controls the compressor and condenser fan motor. The unit stops working. Make sure the switch on the side of the thermostat is set to cool instead of heat that will ensure that the proper mechanical system. Capacitors send an electrical jolt to start a motor a start capacitor or to keep one running a run capacitor in an air conditioning system capacitors work with three different motors.

Refrigerant leaks resulting in your air conditioning freezing up. If the thermostat is defective it may prevent the fan from working. While each component in a central air conditioner is critical quite simply the unit will not work if the fan is not running. If it s cloudy and relatively cool outside but feeling stuffy in your home running the fan for an hour or so can certainly help.

Most thermostats control both central air and central heat. Another common and easily remedied situation that sometimes results in a central air conditioner fan not working is a dirty clogged air filter. Blower and fan noises such as squeaks squeals and rattles may be transmitted through the duct system. The blower is going bad or out of balance.

This is another part that must be repaired by a professional hvac contractor. If you don t want to turn the fan off and on all of the time there are some new technologies that will allow you to program the blower fan to run for 10 to 15 minutes each hour. But before you phone see if the problem is caused by something else. The air filter needs to be changed.

If it s conditioning not cooling this could be why. Central air conditioners can work for years without problems if properly maintained and serviced annually. If they aren t working properly call a trained technician. If you have your system inspected and cleaned annually it should run without any trouble.

It takes much more energy to get the outdoor fan going than it does to keep it running. Fans in the central a c both pull air out of the room to be conditioned and have humidity removed and also push chilled air through the vents throughout the house. The compressor the indoor blower fan and outdoor fan.