hey guys i recently went to look at a vrv 3 system, an error code came up which was f3 high temperature discharge probe, i down powered the unit and re powered, the fault stil occured. i checked each probe on all 6 compressors and could find no sign of burnt probe, i also did a system run on test mode to see if there was a refrigeration leak, no loss of refrigerant found? what else could this be? all help will be much appreciated.