I have a York m/n YCAJ130 s/n RAHM7724AA that is tripping #1 compressor on low motor current. It runs fine for a week or two and then trips. Sometimes it is shortly after startup and at other times it has been running for hours. It is an air cooled 134a recip with the millenium panel. It has part wind start and the motor current at the time of trip appears to be 18%. This leads me to think that one of the contactors is dropping out. I switched them with the other compressor but the fault remained with the #1. Any thoughts?