Ive been working on a 23xl2323 s# 4300q64626. R 22 machine. I originally went to call of leak and oil on ground. Small leak and small puddle on floor.repaied leak. And alarm came up when started chiller.i changed oil filter and still had alarm.checked all sensors solenoids ect. Pulled refrigerant and its 70 pounds low.pulled out oil and got 8 gallons out. Does any oone have any suggestions as to what could be giving this alarm.