Did the system work for a while after adding Freon ? If so, sounds like a leak. Compressor will not cycle if too much refrigerant leaks out. You probably need to have a pro find and repair the leak.My 2007 Pilot AWD is blowing hot air even after adding Freon. After a couple days it was back to blowing hot air. Now, after further investigation, I noticed the compressor was not engaging. Any ideas?