AC Compressor will not cycle (it is always on); warm air coming out vents

What is your question?

2008 Dodge Ram 2500 5.7L, Noticed AC air out of vents wasn't cold when I started it a few days ago after it had sit for about a month. When I turned on the AC by pushing the snowflake button on the dash, loud clunk came from passenger side of dash. I could get the loud clunk in the dash to repeat. Noticed the AC Compressor isn't cycling. Noticed that the low side line going though the firewall is cold enough to condense water and frost. It is about 70 degrees outside and low pressure reads 30 psi, and high near 200 psi when AC compressor is on as I added some 134a to the system as a last ditch attempt to fix. Still have control for air flow location (defrost, vent, heat, etc...) so shouldn't be that "door." Why isn't it cycling the compressor, and why is the air warm?

How long has your 2008 Dodge Ram 1500 had this problem?

A few days