Dido

I agree, it is a difficult situation. Calling a specialist is not a solution either. It will cost a lot of money. It seems to me that you can solve this type of problem yourself if you have enough information. I think you should look at the carrier thermostat manual. Sometimes the issue can be much simpler than it seems at first sight. Don't give up on yourself.

I am listening music on inernet radio often. It's free!