So far on the start of this I bought the TT from a dealer in Boise, ID he assured me the water system was loaded with antifreeze. When when you open cabinet and looked at the PEX pipe it was pink. Now the first freeze by accident I hit the pump switch in the bathroom but not the light and here the loud HMMMM from the front.
Check again and sure enough the water pump was load with antifreeze and was froze up. This is only 28-32*F weather. Then later on the same day I found the one of the waste valves on the hold tank is leaking or knocked open. Well after pulling the cap I find a block of solid ice in the sewer line.
So at that point the weather was warming for the day so I flush the entire system out including the water heater. Then proceeded with the blow out plug. using 50 PSI air the lines dried out quickly.
Well just thinking all I got to do is add antifreeze to the drains well after now seeing the drain a solid pink block a second time at +25*F I gave up on the whole antifreeze thought so I grabbed a tea kettle full of hot water poured in all the drains then using the shop vacuum blew the sewer line clear.