Upon arrival found board with error code flashing 9 times stating that outdoor ambient temp is 0 degrees Fahrenheit, which is not true. Ohmed out outdoor ambient temp sensor and its reading O.L. Found cut in wire. Will need to return with outdoor ambient temp sensor. Do not need board. Will need to recalculate pricing. Manufacturer Trane Model # 4TWR5030H1000AA Serial # 180540W0BF Installed new outdoor ambient temp sensor. Checked heating and cooling. System is working properly. - Collin