Arrived, inspected system at Residence 02. Found that the contractor was pitted and an insect had died and become stuck within the contacts. This likely caused poor connection and over amping, especially during hot times of the day. Changed contactor in unit and cleaned electrical cabinet of dust and debris. System now operates with normal amperage. While running system, noted low side pressure initially seemed to indicate low airflow, but observing indoor conditions reveals airflow is good, but system is running under low load condition and near freezing as a result. Advised to keep temperatures slightly higher indoors to avoid freezing. System operational at the end of service.