AC Diagnostic System: Refrigerant Type R410A Metering Device-TXV SP/HP 42/277 SLT/LLT 89/92 VSAT/LSAT -5/90 SH/SC 94/0 Outdoor Entering Air Temperature 90 Filter Size(s) 16x25 Returned tstat to original settings: Y Unit operational; prior to leaving: Y Notes: On arrival Ms. Karen informed me that evaporator froze over yesterday. Inspected evaporator. Oil is in primary drain pan. Confirmed to be refrigerant with electrical sniffer. Multiple leaks at evaporator. Checked operating temperatures and pressures. Unit is severely under charged.