Plumbing Questions? Ask a Plumber and Get Answers ASAP.
Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. First I’ll need some more info so I have a more complete picture of you situation.
Where is you pump, in the well or next to the tank? do you have pressure on the gauge?
Do you have pressure on the gauge?
Did you shut off the main shut off to the house at any time? if so does the shut off have a round handle or a lever handle?
Do you have a drain valve at the holding tank? if so do you have water there? do you get water to any fixtures or outside faucets in the house?
Where is the gauge? what does it read? did it move when the pump first started.
Ok 8 psi is inadequate and the pump should not shut off until the gauge gets to at least 40 psi. If the pump is not running and the gauge us at 8 I suspect you have a bad pump switch or the switch (or the piping to it) is clogged with rust. Is the pump running?
I don't know what you mean by internal and external pumps. Systems only have 1 pump. The pump runs on the pressure switch which automatically control the pressure which should range between 20 & 40 psi at a minimum. If you have problems with low water levels in the well you can get a pressure switch that will shut the pump off if the water level gets too low.
Ok, not a typical system. Sounds like you have a cistern type system. So the cistern (storage tank) usually works off a float or similar type switch. It sounds like that tank is full and the pump for that is not running. That's OK. I'm talking about the pump that sends water to the house. If the cistern is full and the gauge to the house is at 8 psi then the house pump should be running
I can't help that your pump controls are not wired properly (as described above). You need to build the pressure up to at least 20 psi to have any reasonable expectation that you'll get water out of the faucets. 8 psi could just as well be zero or close to it.