Originally Posted by Mr. Dan
Does your unit have a winterizing kit -- such that you can turn a valve and get the pump to draw anti-freeze out of a jug? If so, that valve may be in the wrong position and you're just sucking air.
Dan, Brand new to RVing. There is a valve, cold, at the bottom of the water heater. There is a valve, hot, at the top of the WH. There is a third valve just after the water pump. Have tried, I think all options, with the same result, sputtering of air/water! All valves in the parallel, all perpendicular, and a healthy mixture of parallel/perpendiculare.
Have an inlet on the back of the RV, marked for antifreeze, which makes reference to making adjustments to several valves.
Thanks for your efforts.