Check the grounds on the frame next to the micro, also check the main power fuse(which should be close to the batt/alt), other than that, check the 2...
When i start the big compartment regardless off the setpoint i can hear first that the hgv1 valve opens and just as the compressor turns it shuts off...
I have overhaul compressor XJS 120 and finished work installation jackshaft. New bearing SKF factory with mark YOR.534B0101H24. I measured axial play...