Survived the freezing process, he did. Survive the time being frozen in suspended animation is another consideration. Suspended animation is supposed to slow down the life process by external means without termination. However, if left in suspended animation for too long, the victim could indeed die while in hybernation.

Upon being freed from the carbonite in ROTJ, Han experienced these symptoms: temporary blindness, nausea, and firing nerves upon awakening. This is evidence that Han was encased in carbonite for only a few months. Hence, little time had to have passed between ESB and ROTJ.