Is there a relay involved in the climate control module?

What is your question?

Outside temp goes blank and then the inside temp goes blank with default to defroster with nothing working. After 5-7 minutes of being on whether engine running or not everything starts working fine. Is there a relay/sensor involved in this process? If so, where is it as it must be hanging up? I changed out the outside ambient air sensor but I still have this problem. 10/12 No response yet. Doesn't anyone have a clue as to what is the problem? I am 77 living on SS so would appreciate some knowledge/help from someone.