Join Date: Aug 2006
Thanked 26 Times in 25 Posts
Rep Power: 12
Pull the lines from both sides of the pump and run the pump. See if there is suction on the inlet side of the pump.
I'm still having wierd pressure issues with my system. I found high backpressure at the outlet side of the pump once. Fixed the problem and it hasn't come back. But I'm occasionally getting warm water out of the cold water faucets. I think I need a stronger check valve on the hot water tank.