westend wrote:
The issue is on the supply side of the pump. These types of pumps will pump out any residual air until water is avaiable. That means that air is being introduced into the supply side plumbing, a valve is closed that shouldn't be, or there is a blockage from the tank to the pump.
Do you by any chance have a filter or filter canister on the supply side of the pump? If that's clogged, it will block any water from reaching the pump.
The issue is on the supply side of the pump. Wow, did you read any of the previous posts?