just changed the control module because not enough voltage was going to the ignitor plug. Then the glow plug needed changing. Worked great for a few days. My 4 yr old messed with the thermostat then the heat didn't work again. Pulled the plug on the furnace to reset, then took the batteries out of the thermostat to reset that.
Turned on the heat switch, brought it up to 80 then held it, honeywell thermstat. Module had green light....clicked....a few seconds later another softer click. This is usual. Then waited for the connection to the glow plug to orange....30 seconds passed clicked for the ignition for plug then 3 seconds later....turned itself off.
What's wrong?

I read your post twice and still not sure what is going on. Did the ignitor glow? Then no fuel?