I have a Carrier chiller with intermittent low oil pressure that will cycle between A & B circuit every 2 - 4 days. When I check the net oil pressure it runs 30psi on one circuit and 25 on the other; well above the 6psig cut out. Also I just changed the sat suction and gas entering sensors for both circuits, problem still persists. Oil levels look normal and I have not seen any foaming. Has anyone experienced this persistent problem?
Mike
Mike