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American Standard Freedom 80 - 9 blinks - Ignition issue

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.

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  • Dave Graham Nov 19, 2009

    Thanks so much for the quick reply. I will check out the airswitch...once I find out what it is. I'm a computer technician, I've had to learn alot about furnaces in the last few days.

    I talked with my 10 year old, she was in the House when the cable guy was running cable. She pointed me to a newly placed cable splitter next to the fuse box. There is a green wire running from the cable splitter to two wires (think they would be the wires). They are two thick metal wires, the green wire from the cable splitter is connected to them. I think the cable person may have connected the two wires together in order to connect the cable ground wire.

    I disconnected the green wire from the cable splitter and tried to restart the furnace, still getting the error light blinking 9 times. So, I reconnected the wire...when I did there was a very tiny bright light. Should something like that spark? My guess is no.

    I don't have the tools to remove the connector he put on the two wires at the fuse box. I would like to seperate them to see but not sure if it's worth the effort. Could something like that cause a grounding issue at the furnace?

    The cable tech was here on Friday. It was a warm weekend, I noticed the Furnace was pushing cold air on Sunday afternoon when it started to cool down. I think it's way to much of a coincidence...

  • Dave Graham Nov 20, 2009

    Check resistance on HSI and it measured 15 (new to using mutlimeter so hopefully I'm using it right). Checked the old one and got the same measurement. Disconnected the connections on the pressure switch and the multimeter stayed at 1. Not sure if I was doing it right though...cable company is coming out to make sure they didn't mess something out.

  • Dave Graham Nov 20, 2009

    Tested Pressure swtich off the furnace and was able to get it to make contact. Ohm reader read 0. Tested again on the furnace and it's not making the contact.

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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

  • mgbloom Nov 28, 2010

    I have same problem. Electrician and plumber spent hours checking connections and replacing parts, but still will not ignite. Induction blower goes on for 2 seconds then main blower, but no ignition. It worked for a few weeks after cable installation, then this problem started. Any sugestions? Thanks, Cold In Boston.

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