Ducane furnace with ST9160B control card :
I have a Smart Valve (SV9520H) that seems to pass all tests and shows nothing is wrong (according to indicator flashes) Hot surface Ignitor glows, valve solanoid clicks to allow gas to come out but nothing comes. I disconnected Gas and tried to blow (using hose) through the gas inlet but it didn't allow a steady flow. I am assuming from the solid click that the gas should be flowing... any suggestions on action of the valve? Thanks, osbob