The symptom I'm dealing with is that the heat pump system isn't cooling as much as it should. Tested it today, was about 79°F inside and outside; system was blowing air at about 73°F.
Outdoor unit seems to start up and run fine. Air handler is pulling air pretty good. The line sets were about the same temperature when the system was running. Weird thing (I think) is that the liquid line seem to cool for a little bit when the system started up and again after I turned it off. But when it was running for a while, the line sets were about the same temperature.
The compressor doesn't sound the greatest when it starts up and shuts down, but that could be my imagination. The diagnostic LEDs on the outdoor unit indicated the system was running normally.