If I were to take a blind stab where would a place to try stabbing be.
It has the upgraded fan software in it I yanked the controllers apart and verified with the numbers on the proms.
Since both circuits randomly are acting up with the random high pressure cutout and low oil flow could it be time for a slide valve rebuild and replace the unload and load solenoid while I'm at it. It's a 98 model chiller with a metric ton of run hours since it's in south texas and we average 106+ for day's on end during the summer.
This summer it ran perfect not a hiccup one other than a weak safety relief valve that dropped the charge on one circuit.