Hello,

I have an American standard Freedom 90-r furnace that went out a few days ago. First there was a 3 flash error code which i determined was the pressure switch. I cleaned out all the lines tot he pressure switches but nothing. The inducer fan would start to rev up and when it got to the 3 or fourth setting it would just stop and the 3 flash error would come up. I then opened the drain line from the inducer fan and it was plugged up with gunk. I cleared it out and it then worked.. Only for a day. Then the code changed to a solid red light which i could not reset for the life of me. I called a repair technician and they said it was a failed control board. They ordered the part and replaced it yesterday. All worked fine until i woke up this morning and my house is 59 degrees. The heat was running but just blowing very fait cold air. I went down to the furnace to try and reset it and again solid red light. I am really confused as to what the issue could be. It has a brand new control board. Wondering if it could be something with the inducer fan?? I thought I would ask on here in any case. I do have a call into the tech that fixed it but thinking they are not going to get back to me until Monday and it is cold here in Chicago.

 

Not sure how much it will help since I struggle to find their manuals but, do you have the model number that is posted on the burner section?

 

The Model number is AWY120R9V5W5 thanks

 

American Standard

Nope, I only see toilets and faucets.

I tried dropping the first A and using a * on Trane's website but nothing came up.

 

sorry was reading off the techs paperwork. its AUY120R9V5W5

 

It is strange that a constant LED indicates a faulty control board with so many of their units but a gas valve issue with some.

Looks like your model number at the top...



The new board should be under warranty. I recommend calling your contractor.

 

thanks for the help, i appreciate it. Unfortunately i have to wait until Monday as these guys don't work on the weekends.. I wish there were some way to reset it other than opening the door and using the switch. Oh well. lots of blakets and sweaters..

 

also my error is a solid Red and Solid Green LED which indicates blown fuse. Do you have any idea where a fuse might be located? I can't seem to find one...

 

It is usually just 2 spade connectors plugged into a 3 amp blade type automotive fuse between the transformer and board. I couldn't find that manual on Trane's website but I have a copy downloaded. I will try to see if it has a pic and post back...

 

I Googled the manual number 18-CD20D3-16 and it came up...


http://www.trane.com/webcache/un/fur...6_06012004.pdf





Do you have one on your board?

 

also my error is a solid Red and Solid Green LED which indicates blown fuse. Do you have any idea where a fuse might be located? I can't seem to find one...

 

yes i found it. i need to go to store and get another 5 amp fuse. not sure why they are blowing.....

 

I am also having the same solid red light problem. I have the Freedom 80, but it appears to be very similar to the 90.

When I reset the power, it turns on and blinks slowly until heat is called and then blinks quickly. But after it turns on, heats, and turns back off, the next time heat is called for the light stays a solid red. And it does not heat, but rather the blower comes on and NEVER turns off. If I trip the breaker, the same sequence takes places again. Any ideas what I can try?

 

It's tough to find the manual when given Freedom 80. I need a model number.

 

The model number is AUD080C936H3

 

Houston,

I found the fuse. It was on the bard and it was blown. I went to Ace and got a new one and it fired right up. I think that might have been the problem withth either board that they replaced... I now need to find out what is blowing the fuse..

 

A short to the control wire going outside is the most common cause for popping fuses. Have you run cooling lately?

 

Sorry if I kind of hijacked your post, jvietri. I wasn't sure if starting a new post was a good idea or not since ours appear to be similar.

I can keep resetting mine with the breaker trip, but after one heating cycle it reverts back to the solid red light, with blower staying on and without heat. OK during the day while I'm here and awake, but it is going to get cold in here by morning when I wake up.

 

Do you have a solid red and a solid green?
What is your panel definition for your error code?
Do you have the manual for your furnace?

 

Reset the power to your furnace and describe in detail the sequence of events.