my heating/air conditioning fan speed 1,2,3 do not work. only speed 4 works.why?

What is your question?

Nissan Versa hatchback 2008.

What makes this problem better or worse?

It is best if I could use all speed.Usually I use 1,2 or 3 instead of 4.

How long has your 2008 Nissan Versa had this problem?

2 weeks