Woke up freezing, any help appreciated :-)

[Bluemaze]

Woke up and me and the kids are freezing :-)

I have a Bryant furnace, maybe 20 years old, can get model number if needed.

What is going on is this...

Furnace kicks on normal, pilot is lit, flames start, everything is normal and then the flames kick off, then back on again, and then off again. They continue to do this, and so the thermostat temp is not reached so the blower continues to run and run and never shuts off.
So I get barely warm air because the flames are not staying on, any ideas ?

[irregularjoe]

sounds like a bad gas valve.

Did you ever see OHM'S mother in LAW?...... SHOCKING!

[e5husmc]

Your problem sounds like what was happening to me. The flame sensor was dirty and needed to be cleaned

GH

[Joel]

I;m a tech. and can garrentee you flame rod is dirty or needs replacing but probably just dirty,'its a small rod sits in the last burner and is usually mounted with 2 screaws remove the 2 sceaws drop it through the hole its in remove the lead to iy if you like and sand it clean with fine sandpaper then install and i,m sure this will work for you
joel