1684 A/C 1-2 coolant presuure and compre ~~~~~ RSW conducted check on 01/10/20.A/C system showed symptom of choke.LP almost 0,HP too high.System short cycling due to LP triggering low pressure s/w.No heat exchange observed at condenser.Charge system to 300psi with nitrogen and check for leak-no leak found.Pressure able to hold for 3 hrs.Test run system found short cycling,Lp almost 0 when runing.LP & HP dont equalise when compressor stops.To further troubleshoot to locate choke. Not: 2206350 raise to RSW to follow up trouble shooting. Checked by Lin Jun Hong. 05/10/20