DCM2 complete; Heat; (8) F20202 and (2) AX49 replaced. Systems are fully functional. All components are operating within manufacturer specifications. Gas pressures and temperature rises are within design tolerances. Heat checklist attached.
DCM1 complete; AC; (1) F20201 replaced. System is cooling with a 9* temperature split from return to supply, should be 61-20*. Superheat is elevated at 30* with no Subcool present. System is low on refrigerant. Identified leak in evaporator coil. Video attached
Arrived to No Cool on Upstairs system Identified weak capacitor. Replaced capacitor and tested system. System functioned for 10 minutes and seized drawing 38amp which was LRA for the compressor. Compressor was extremely hot, cooled down with water and tested system. System functions as designed. System does have a high amp draw ; 6.9 for a RLA of 7.7. If system seizes / fails again, compressor replacement is likely. System is still under warranty. Possible cause of early compressor failure, identified improperly mounted and insulated TXV sensing bulb. SH was initially 2-4*, once repositioned and insulted SH increased to 11-13*. Low SH can causing liquid slugging not the rotary compressor System is operational, refrigerant pressures and temperatures indicate the system may be slightly low of R410
Routine AC maintenance in Union City