Question about Heating & Cooling
Just purchased a house. It has an American Standard Freedom 80 furnace. We've been in the house just over two weeks. Initially the furnace was working. We had a breif warm spell and when it started getting colder here, I noticed it blowing out cold air even though the heat was cranked to 90. My Wife said if she turned up the temp high it would eventually get warm. Not sure if it was because it was getting warmer outside, or if it was because she was turning the heat up. I checked and the error light on the furnace is blinking 9 times. The inside panel indicates ''Check Ignitor'' more information on line says ''Check Ignitor Circuit and Line ''N'' to 24VAC ''Common'' voltage (≤ 2 volts)[possible grounding problem]''. I found some information on the furnace the previous owner left us the ignitor was replaced on 11/10/08, a year ago. I ordered a replacement ignitor and installed it today, still having the same issue. Tried cleaning off the flame sensor just in case, but from what I read that is probably not the issue.
It is still not lighting and getting 9 blinks. It just runs and blows cold air if left on. The draft inducer motor starts then stops, the normal blower kicks in but the ignitor doesn't get hot. Not sure how this would be related but the cable guy was here setting some stuff up between when I know it was working and when I found out it wasn't...just not sure what it means to check the ground, if possibly a cable ground could have messed this up. Also, worried the vents may have been blocked at some point by boxes from moving.
I will try to help. Your furnace has to have a good ground before the igniter will work. The draft fan starts purges for a few seconds and the ignitor is supposed to come on. If not check to see if the contacts on the air switch on draft motor are closing. If you ahve changed the ignitor that is not your problem. Another possible problem is the baord that feeds the ignitor. But check the air switch first Rus. Keep in touch.
Posted on Nov 19, 2009
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Posted on Jan 02, 2017
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Hi, Basic Furnace or Heating System Troubleshooting
Check on the inside of the bottom cover to see what the two blinks means
Here is a tip that will help you try to figure out why your furnace is not working.
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