Central Air Blower Fan Won T Turn On

If you turn on your air conditioning system and find that there is no air blowing out of the ac unit or no buzz of the blower fan motor then it is possible the ac blower motor has an issue.

Central air blower fan won t turn on.

Other snafus such as a shorted thermostat wire can also cause the a c or warm air furnace fan to run continuously. This is one of the most common and easy ways to know if your air conditioner blower motor is broken or not. Check the fuses in the disconnect box located outside near the condenser to make sure there s power. 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.

Replace or clean the furnace filter. Similarly if a fan won t turn when the power is on but will rotate freely when shut off it could be the sign of a bad motor bearing. Those problems are explained at thermostat won t turn off. But if you hear a loud clicking noise andthe ac won t turn on it could mean the thermostat is malfunctioning.

But here are some suggestions to start troubleshooting the problem of a furnace blower fan that does not start. The fan limit switch may include a switch that manually keeps the fan running. At the furnace or air conditioner air handler or blower unit. This noise is caused by a part called a relay which opens and closes to turn your ac on and off.

What causes a thermostat to malfunction. If the air conditioner still won t work make the call. If your thermostat is secured correctly to the wall this clicking sound shouldn t be very loud. Most thermostats control both central air and central heat.

I would start by confirming that the blower fan will operate. If the condenser coils are coated with dust or debris use a garden hose to wash them off. The first is that the blower won t turn on. I would continue diagnosis by watching the behavior of.

Test to make sure you are getting 24 to 28 volts ac between the g green and c com terminals on you fan center or control board. Fan has trouble starting in some cases you can give the fan a kick start by pushing it with a stick and if this occurs there is likely an issue with the capacitor. Your system probably has a manual fan on switch on.