hello, my unit (6/10 yo I assume) was working 2 winters ago. After a pilot replacement and cleaning it worked for another year. And this past winter main burner stopped lightning up. Just in time for Christmas... As of right now: The pilot comes up right away. Gas color is blue. i cleaned the pilot just to be sure. I also checked all wires - all seemed to be tight. I vacuumed the main burner. I replaced the ICI unit, but that didn't fix the problem. Once i manually turn ICI into "ON" it clicks, turns the pilot on and clicks again. After that nothing happens no matter how long i wait. I appreciate your guidance and time.