I just replaced two compressors on a 40 ton Trane rooftop unit. wired it up and when i turned the breaker for "c" compressor, which is one of the two i replaced ( c & d), "C" compressor runs for about30 to 50 secs. then shuts off. Outside air temp is about 80f and this is stage two should be running... I dont have good shematics and we're running Johnson Controls. Stage 1 &4 run great on the other side of the unit, but according to he diagram, A & C should be on afterA M/n # is RAUCC40EBX what's keeping the unit from running normally? I charged the unit with appropriate charge of r22? Hep Meh Pleeze.