evaporator completely frozen over with ice. removed evap cover checked heater. good. put unit into service diagnostics. defrost cycle. heater not heating. checked electrical connections to heater. found one wire loose not snapped in place. likely the cause for evaporator frosting over. connected properly. started heating. made sure evaporator thermistor mounted properly. put plastic tie around it to hold solid. completely thawed out evaporator of ice. op's ok. wiring of heater was between evaporator cover and vanes of evaporator. relocated wiring . ok.

checked frz evaporator completely frosen over. put unit into service disgnostic. activated defrost cycle. Not heating. removed evaporator cover. found one of the connectors for the heater not snaped and connected properly. once connected heater came on. put thru several test checked ok. thawed out evaporator. circulating air intio F.F.area. operating normally.

replaced heater per S17304 unit was not installed customer had removed to replace floor.

replaced heater per S17304 this was a extra amount of time to replace. test run in service diagnostics op's ok. no codes or leaks.

replaced heater per S17304 test run in service diagnostic test checked op's ok.