Outside fan is running ... t-stat turned off. 15 year old Carrier don't know model number.
Thanks
A relay can be welded "closed" and cause this. It is in the outside half of the air conditioner. If you have printed circuit boards, it's a lot harder to guess what's wrong from over here, but I've actually seen this problem when it was caused by a relay. Of course, I am assuming no person has been in there changing wires around.
Open it up, find the relay where one of the fan wires is going, give it a sharp rap with a screw driver handle. If that fixes it, replace the relay.
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