Hello, I have a 5 ton closed loop system. Its been really cold here the last few days. 40 to 50 below windchill. My heat pump kicks out and aux heat kicks on. When this happens it seems to force the water out of the pump pak. the freeze light comes on. I usually have to reset the breaker in order for the heat pump to come back on. I have been told maybe it still has air in the system. Any ideas on this?