The blend door won't cause that but the mode door could. It's also possible the system is misbehaving because of a bad sensor. If it's Auto A/C then there will be three, Ambient, Cabin (In-car), and Intake (A/C evap temperature). If any one of them thinks the car is in Alaska or Equatorial Africa, the system will misbehave. The ambient is easy to check, it's the outside temp reading on the dash. The other two need to be checked with a top-line scanner that can connect with the HVAC Controller.