When I turn on ac switch to # 1, I can hear mazda ac compressor running and RPM increases but the blower is not running. My blower works only # 3 & 4 where compressor is not running no more even the a/c switch light on the panel goes off.

I tried to connect compressor direct to a (+) battery terminal, the a/c runs fine but RPM goes very low, it seems like its about to stall.

Whats wrong?

 

Bring that to the dealership, dont start trying to take stufff apart, under warranty let them deal with it...