Question about Heating & Cooling
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Posted on Jan 02, 2017
sounds like its not venting properly...it likely is shutting off on a "Spill switch" or "Vent safety switch"....check the vent/chimney first off.....also the pilot could be dirty..,..a lazy pilot tends to blow out easily....pilot should be blue and sharp,,,big enough to fully envelope the thermocouple
Posted on Nov 01, 2009
Testimonial: "I checked the pilot light and it's clean. I will have to check the chimney next week but thanks!"
Remove the burner and gas valve from the furnace and use compressed air
to blow the area under the pilot area ans all around it. The dust and
stuff usually cause a condition called "Lazy Pilot" and the flame is
probably not going in the designed directions. While you have it out Id
replace the thermocouple with a new one reassemble and re-lite and
note the difference. The flame should be mostly Blue and no yellow (or
vary little at the top end of the flame only) Orange in the top area
indicates a good burning flame and the closer to the base the bluer it
While you have the burner out look inside and inspect the inner heat exchanger for cracks or rusted open holes there should be none. Turn on your fan while inspecting and see if you feel the steady blow of air from it inside the heat exchanger indicating a hole. Don't confuse the air that may come down the flue with the air from the blower though. A little breeze is expected from this.
This will take care of over 90% of the problems with the "Blow out" symptom.
If you still have problems you can try and "turn up the pilot". Usually a screw close to the pilot tubing is covering the adjustment screw. Put some soap bubbles around it so you can see if it leaks or not and turn the screw out for more flame (CCW) and in (CW) for less.
Hope this helps Please grade me accordingly and good luck.
Posted on Mar 11, 2009
Make sure the pilot is clean (Blue flame fully enveloping the top portion of the thermocouple) if its dirty the pilot will be yellow like a candle and barely touching the thermocouple ...quick fix is knock the pilot with a screwdriver...gently tapping it...knocking the dust out and getting a better pilot....the pilot could also be too small if its not making good contact with the thrermocouple....there could also be an Auxillary limit wired into the thermocouple which when open will prevent the magnet from staying closed....if all looks fine then the Gas Valve itself is likely gone (The magnet inside is not field repairable)
Posted on Oct 25, 2009
trycleaning the pilot sounds like it too small an dthe heat from the burner is keepinh the thermocople going or try new thermocouple
Posted on Jan 10, 2010
SOURCE: Is there any way I
You should never attempt to manually relight the pilot on this model. It has a hot surface igniter that is probably cracked. Most HVAC techs carry theses on their service trucks. However you may find one at an Ace hardware store in more rural communities for 30-$75.00. The higher priced ones are for the more universal replacements.
Posted on Jan 02, 2011
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