heat problem on 93

I have had a 93 maxima now for about 3 years. It has an electronic heating and cooling unit in the car. In winter if I set it at 85 degrees it and on econ it will blow heat out of the floor and window. The panal vents will blow cold air out no madar what unless I have it on only panal vents. Then the driver two will be warm and passanger cold. Can someone help me with this? Do i need a new electronic unit inside the car or is it a simple fix?

Peace, kevin

Sounds like you may have a computer problem or a blend door acuator problem or probably both. My father had the same problem on a Buick Park Ave. If this is your problem, be prepared to pay alot of cash to fix it. Not something you want your local mechanic fix. Try strauss or pep boys something like that. Worst case the dealer. Let me know if this helps.