- Tech encountered a variety of challenges upon arrival. Found condenser fan rotating backwards due to incorrect capacitor wiring. - System continuously shuts off due to low pressure cutout and began rapidly energizing and de-energizing the contactor. Possibly a bad low pressure switch or defrost control board. - Confirmed air flow and proper blower rotation and speed. Ran system in cooling mode with no issues. Inspected outdoor TXV and found a micro leak in the equalizer tube running to the bulb. This leak is causing the TXV to remain shut and create a restriction when in heat mode. Customer did not approve any repairs at this time. Customer stated that they will perform all the repairs necessary. Tech recommended flowing nitrogen when brazing due to the small ice of the equalizer tube. Recommended replacing defrost control and low pressure switch. Tech did not perform any repairs during this visit.