-- need more help in figuring out flame sensor or roll out switch - Weather King --- ICECO --- 80 PJ --- forced air --- Honeywell valve (on/off switch)---burners light for 1 or 2 seconds, then go out

The flame roll out switch will be a little ceramic dodad with wires right where the flame will hit it. If it doesn't send a signal to the board, it will shut the gas off in a few seconds. Clean up the metal contacts. Replace it if broken or cracked.

Sounds like the flame sensor. Are the flames rolling out? If so, you may have other problems... Very simple to bypass the roll-out for testing...