[CheX_F20]

I've basic manual climate control.
No degrees to choose just old fashion blue for cold and red for warm.
Im setting temp somewhere in the middle and enjoying the ride.
From time to time ice cold storm comes out of wants just to switch to hell fire totally on its own. Random burst of fire or ice comes and goes more and more frequently.
When I'm shutting off ventilation sometimes it turns back on in it's own.
Own the car for 10 years never had that issue before.
Has anyone encountered a similar problem?