A/C or climate control

I located the blend door actuators. On my car listed above XL, there is one actuator on each side. And when I manually use my hand or a screwdriver. And place them both in the up position. And I turn on my A/C, it works and gets super cold. But once I turn the right knob to hot air it gets hot on that one side. Because it's dual climate control. Then if I try to change the knob back to cold, it doesn't work. And the driver's side knob, when I turn it to hot, it doesn't change at all. So, I was wondering could it be both actuators are bad. On each side? Or what's the issue?