[sluggo]

it was time to swap out the old AC fresh water pump.  what the tech recommended was a pump that Dometic makes, but it comes with a generic label, but with the same ratings, GPM etc. it is brand new, instead of Red it is Blue. Anyway, he puts it in, and it wont pump, it turns on for a few seconds (so we know it is wired correctly) and it shuts itself off.  We check there is a good stream of freshwater coming thru the strainer to the pump.  And when we disconnect the pump from the water line, and blow thru the line, the water comes out as it should, so we know there is no restrictions in the line.  so what else?  Bad pump? (we actually put two different brand new blue pumps on, and neither worked).  is there a 'switch' somewhere that says if there isnt any water coming into the pump turn yourself off?  Other ideas?  TIA   Sluggo