I live in a 20 year old condo in New England. I have central air. I turned on the air for the 1st time this season. I can hear the condenser outside my building running or at least there is noise coming from it. However, the fan in the condenser is not working nor am I getting any cold air into the living area. The fan on the heater in my basement is working. The outside condenser is made by Acroaire. What do you think is going on? What should be my next step? I appreciate any help on this. Thank you.