Recent content by charlied

If the gas valve is open (which, considering it was working, it clearly is), and the spark is visible, what would cause a blockage to the gas line? Or what would stop gas from being available for ignition? (Blew high pressure air through the ignition line, seemed clear)....

My heater has an electronic ignition (called "IID"?) and has stopped lighting the heater. The igniter is sparking just fine; you can clearly hear it, and I pulled it and visually confirmed the arcing. The heater HAS lit once or twice this season, but does not light regularly. I pulled the...