I have a 40AQ Carrier heating unit coupled with ComfortStar outdoor air conditioner unit. It is winter and the heating unit is working normaly but at one point the air blowing through the duct is not hot but room temperature. When I look outside at the outdoor unit, the I can see the fan running. I was told by a friend that the outdoor unit should not be running in the winter. I am not sure if the two issues are related, or if there is an issue at all. My questions are:
1) Should the outdoor unit fan be running in the winter?
2) Is cool air coming from the duct a sign of a problem.