Tech replaced two 14*20 filters. Tech found outdoor unit not running due to defrost board being unplugged. Tech plugged defrost board back in and tested system. Tech did not find any refrigerant leaks in Trane system. Tech found TEM6 blower wiring and dip switches are incorrect for 4 ton system. Dip switches are set up as factory default (off off off off) and compressor circuit is landed in Y1. Tech changed circuit to Y2 and dip switches to nominal 4 ton airflow (on off off off). There is evidence of moisture blowoff from indoor coil due to improper airflow. Blower motor bearings make a slight scraping noise in low speed. See video. Tech removed unnecessary batteries from thermostat. Tech was unable to duplicate described thermostat challenge. Customer also expressed doubt on mini split leaking coil diagnosis. Tech got heating mode running pressure and recorded it running in a vacuum. Pressurized with nitrogen and confirmed indoor coil leak. See video. Tech recommends replacing min