Originally Posted by MRichaud
Our Precept 31UL has the Nautilus P3 system - not sure which series your Sierra has. While I didn't have any problem pumping antifreeze through the lines, I've not been able to blow out the lines following the instructions, which say to orient the four levers so that they're pointing at each other (45 degrees). I left the settings for city water and finally was able to pressurize the lines to blow them out. Then put the settings for winterize, and the pump drew the antifreeze just fine. Didn't mess with the screen.
All that is to say that the instructions for our system were incorrect (at least for our coach). I assume you have a setting for winterize, which should allow the pump to draw the antifreeze. Maybe not much help here, but maybe reading another's experience will give you a "light bulb" moment...
Thanks for the reply. I have the nautilus P4 and not real sure the differences. I know I have to address this before next season because it was a large enough headache to where I don't want to go through that again. Not a fan of flipping that screen because you're basically depressing the check valve which the instructions tell you to never do but I was out of ideas to get it to prime. I would lose prime after each jug and have to fight it to get it to prime again
Just not a fun experience at all.
I would much rather put the antifreeze in the lines but just blowing them out might be the way I have to go if I can't figure out an easier way to prime the system. Miss my old system....worked flawlessly and never had issues winterizing. I would be completely done winterizing that one in the time it takes for me to get this one primed haha