30gxr question

[serviceman]

good morning guys:

I'm taking a carrier 30GX machines and 30XAA, and have some doubts

one of the compressors in the unit protects for 30GX Low oil intermittently. that could cause this failure?

another low pressure compressor works with low suction to upload 17psig and 45 psig. strate that causing the problem

[goshen]

HI
it could be a faulty oil pump,a clogged oil filter, at the compressor or main oil line !
or a oil leak ,check oil tank .
regarding low pressure i would check for a leak or a faulty exv possibly clogged filter drier?
more info would help .
good luck