Hi-

I'm having a problem with my gas furnace and don't know where to start to find out what it might be. When the thermostat calls for heat, the draft inducer kicks on, the ignitor glows, the gas starts and burns for a short time and then shuts off. It tries this whole cycle again, with the same results. Sometimes the blower runs by itself with no heat.

Can anyone make suggestions as to what this problem might be? I'm hoping it's a part replacement and not a big deal...
Thanks in advance for your help!

lisa

If your unit has a flame sensor clean it or replace