I have a Carrier furnace in my attic (Model 58STX110--14122). Does this unit include an attic fan? There is a fan that used to turn on during the day when it's hot and turns off when temperatures cool in the early evening. A while back, the fan started making noises, like it was struggling. Then it completely broke so the fan won't run anymore. There is a switch that is able to turn it off if we don't want the attic fan running.
I'm not very familiar with HVAC units. Is an attic fan part of this unit? The AC and heat works just fine. We used heat in the winter and we are using AC now in the summer. It seems the attic fan part of the unit is broken. I did look in the attic and I didn't see a separate attic fan unit so that's why I'm wondering if it's something that's part of the furnace.
Any help would be greatly appreciated. Thanks!