[DK on the road]

Here are my symptoms, 

Water ran low and out while driving and Headhunter stayed on for 3 hours, best I can tell.
Now with the tank full, the pump will turn on but only develop 10 psi, then drop to nothing after a 1/2 gallon comes out or so.
The smaller 12V pump was never tested or used, and as it turns out, will not develop any pressure. It may have never worked. the smaller Sure Flow problem can't be related to the HeadHunter/no water problem (i don't think).

When the city water is attached and turned on, I get great flows everywhere. I thought maybe that my Headhunter needs to be primed with city water pressure, so I turned on the HeadHunter only to see pressure spike beyond the gauges limit, about 100 psi. I open the outside faucet immediately and pressure drops down to the regulated amount (60 ish psi).

Now the pump will shut its self off with a Fault alarm if left on for more than a few minutes.

Has anyone had this same experience ?

$1,200 for a new pump sounds like a expensive lesson and a sensor needs to be installed to shut the pump off before a pump seal is toasted. Is there a place to install such a sensor ?

I'm not sure if my conclusions are supported by my symptoms

Your thoughts...