My Rheem Furnace will ignite the flame properly the blower will start but shortly after the flame will go out before heating properly. Could the flame sensor need replacing or should or replace the thermostat control?

I have a Bryant 80 plus furnace. I've been having a problem for about a month, now. I have noticed that sometimes not all three burners have a flame after the gas valve releases the gas from the manifold, which causes the system to lock after three or four attempts. The very first burner, from...

New filter; turned thermostat on; blower runs but no flame. What could be the problem? Igniter? Flame sensor? I am not a techie so please give detailed description of how to troubleshoot. Thanks.

Hi, My 20 year old day and night model 394jaz036065 lights the pilot and after awhile fires the burners then shuts down. Now it just lights the pilot and then shuts the pilot down after a while 2+ minutes. Is the flame sensor mounted to the ignition/pilot assembly? I am trying to confirm that-...

Goodman furnace is showing single blink every 2 seconds. I see that a possible problem is the FLAME SENSOR. My main question: Is the flame sensor the SAME part as the ceramic ignitor ? If different, where is it in relation to the ignitor ?