HVAC - Gas Furnace help

[TEEZLE]

I didn't take the flame sensor out to sand it. Going back in tomorrow to clean up the inside of the whole unit though. I will do it then. You all are full of great info!!!

 

[sciwizam]

Hopefully you have a Gas/CO alarm at your place.

 

[markgm]

Originally posted by: sciwizam
Hopefully you have a Gas/CO alarm at your place.

I don't know of any residential gas alarms. The combustion air and the inside air should never meet, replacing a defective sensor wouldn't cause them to.

 

[leftyman]

Keep this up and it will be summer soon and then you wont need to worry about it anymore.

 

[TEEZLE]

leftyman, worse part about it supposed to be almost 70 this weekend!!!

Well, today I went back in after shutting the gas and power. Completely wiped down the inside and outside of the unit. I got brave and cleaned out the three burners and cleaned out all the carbon. (BTW I used emery cloth wrapped around a screwdriver for the inside of the burners). I also sanded the flame sensor which was ompletely black with carbon. I saw what looked like a small "splinter" piece of wood in the bottom burner "tube" when I was putting it back together. It didn't seem to restrict the flame coming in, but glad I did see it! Cleaned it all up and confirmed everything is still working. Working good so far.

Thanks again you all!!

 

[meltdown75]

:thumbsup: 🙂

 

[drnickriviera]

I'm far from a HVAC expert, but i've never had carbon buildup anywhere on the gas furnaces i've worked on. I wonder if you're getting complete combustion. Does the area that the furnace in have a good air supply?

 

[Rubycon]

Originally posted by: drnickriviera
I'm far from a HVAC expert, but i've never had carbon buildup anywhere on the gas furnaces i've worked on. I wonder if you're getting complete combustion. Does the area that the furnace in have a good air supply?

This.

Could be the aspirator is not correctly adjusted. Watch the flame. It should NEVER have any yellow in it.

 

[skull]

Ignitors are one of the most sensitive parts on a furnace. You have to be very gentle not to bump them on anything or touch the part that heats up. The oil on your hands will make them crack. You can't hook the wiring up wrong. It should be directly in the flame. Anyway I'm a day late you should be good for another 5 years or so just bad luck.