Alarm indicates a low refrigerant liquid level in circuit #2, however my subcooling is 20F. The rest of my readings show:
Liquid level (-1.7)
Evaporator pressure 27.8
Evaporator approach 11.8
Condenser pressure 125
Condenser approach 16
Discharge superheat 42.5
Sight Glass (NO bubbles)
Liquid line filter drier (No temperature differental)
Leaving chill water: 44F
Entering chill water: 60F

Any idea what it could be? I suspect it is a refrigerant restriction somewhere mabye in the EXV, but I was able to see the stem of the EXV move in and out. Could the EXV still have a restriction but be mechanicaly ok?