Our service tech thought there might be something wrong with the TXV (thermal expansion valve). He probably could have sold me one, as I don't really know much about air conditioners. However, he said he wanted to check with others first. Upon discussion with others he indicated that the system has probably been like that since it was first installed and that replaced the valve would not help. Since our system is 16 years old, we should probably start thinking about replacing it. I really appreciated his thoroughness and honesty.
