The heat pump needed 4 lbs. of R-22. The low level of R-22 was causing the pressure switch to open and close, thus the compressor cycling. A leak test was performed, and a leak was found due to a shraeder valve at the suction service valve. I had the defrost cycle and thermostat wiring checked while I had the service tech. here as well. Right now everything seems to be okay. I still signed up for a service agreement so that way I get two cleanings and covered parts and labor on most things. Thanks for everyone's advice.