[Jack Houpe]

After doing what Richard recommended you should be able to hear or feel the pumps running if there is no heat coming from the top of the pump going to the lines do what Carl recommended which was rap the check valve if that doesn't work do what Rudy recommends which is apply 10 lb of pressure to the top of the aqua Hot tank via the radiator cap that will make sure that the pumps are primed. You can buy a radiator test kit from harbor freight that has a hand operated pump with a gauge so you'll be able to put 10 lb of pressure on the tank.