I have a Trane XR14 that is doing the typical buzzing sound but the fan isn't starting or running, even when bump started with a stick. The unit has two single run capacitors. One capacitor (135-162MFD) tested good, and the other (70uF) tested bad. I have a dual run 70/5uF handy. A single run exact replacement won't arrive for another week. Should I be able to install the dual run using the C and HERM terminals?
You said the fan isn't running. Is there possibly a 3rd run cap in the unit. From what you've described it sounds like you have a compressor start capacitor and run capacitor. neither one of those would affect the fan.