first of all thank you to everyone in this forum. we have been happily living with our new furnace and central air system. it sure is nice to come home to a comfortable house. we have a Trane XV90 furnace and Trane XL15i air conditioner.
we have a situation with our air exchanger. the house has an air exchanger system that is triggered on and off by a mechanical timer. it came with the house, don't know any other specifics about it besides that.
in the last couple of days, it has been hot that the air conditioner was running when the air exchanger was running at the same time.
first question, should the air exchanger be running at the same time while the air conditioner is cooling the air? is running both at the same time a good thing or a bad thing?
what's currently happening is when the air exchanger comes on, it turns off power to the furnace (therefore fan) but not the air conditioner. because the furnace fan wasn't running, the coils froze because the air wasn't moving.
our new furnace is a 2-stage furnace and we have the fan running all the time. our old one was a single stage furnace and so the fan was only on when it was heating.
this is our first central air system so this is all new to us. i'm thinking of having the installers come back and "fix" it so that the air exchanger doesn't power off the furnace and therefore turning off the fan.
hot or cold, the current system means that no heating or cooling is happening when the air exchanger is running. the air exchanger is usually set to run for 5 hours everyday. it's currently disabled until we figure out what's "right".
does having the indoor air circulating while the air exchanger is running defeat the purpose of the air exchange?
looking forward to hearing from everyone.