2007 honda odyssey problem

I had the AC condensor replaced last summer to the tune of about 1000.00 worked awsome for the rest of the summer. Used heater for the winter months and now that it is getting warmer here in Texas. The issue i am having is that this is an EX modael and has the dual zone digital temp control. When selected AC is turned on the Rear AC gets super cold, The passenger side Gets super cold but the drivers side stays warm. I got under the dash on the drivers side and when the ac is switched to heat the acuator moves. I have check all the fuses that I know and they are good. I am at a loss for what is going on. ANy ideas to try before I drop another 1000.00 to Honda???