Hi @normab
Seems as though there may be a problem with the blend door (stuck? broken?) or blend door actuator that directs the hot air to the driver's side
I couldn't find a video for your exact model, but here are two videos that show in general show what to check.
[https://www.youtube.com/watch?v=YzNaWUaIdxc|video 1], [https://www.youtube.com/watch?v=3NPOG4ZHvPg|video 2]