Ok I soldered a leak on the one zone valve, this system has 2 zones , one circulator,(I bled system) I fired the furnace back up, the water heats inside to 200f and pressure is about 17psi , I get no heat through the pipes up or down zone, (I even tried leaving zones manually open). does this mean that the circulator is bad, everything else seems to be working fine, damper, evrything eletric seems good, the thermostats triger the sytem, just no heat, I am really baffled, any help greatly appriciated.