Downstairs system-low deltaT, found it 2lbs low on R410a. Costumer approved charging 2lbs of R-410a refrigerant into the system. Upstairs system-compressor megged out on the caution level.2012 system, Upon start up on cool, compressor sounds like the the internal mechanism is failings, after 10 minutes of operating, the indoor metering piston indicates signs of restriction as well as overcharged, superheat bounces up and down drastically throughout operation. Due to age of the system and expensive repair costs, a field super Was requested to provide a solution. Costumer invested into 1 system PSA yearly. wainwrightsjo@Gmail.com