Furnace problem

[Roman]

Hi my name is Roman and I am new here. And, I'm here out of necessity. Had furnace problem which was fixed by new converter. Worked for about a week when furnace wouldn't heat up. Blower goes on but no heater. Is there an ignition switch, igniter that's gone bad?
Appreciate the input!

 

[BGMAC]

There could be. Cycle your system off. Then start it again. You should hear the igniter firing when outside next to the heater. If it ignites you Will feel heat coming out the exhaust. If not it will continue to blow for a little while. If you don’t hear the igniter, it or the main board could be bad.

 

[TheLooks]

Put up some model numbers and a pic of the furnace if it has an outside hatch and I may be able to help you.