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-   -   American Standard Freedom 90 error (http://www.diychatroom.com/f17/american-standard-freedom-90-error-118882/)

dblckmr 10-01-2011 02:19 PM

American Standard Freedom 90 error
 
Turned house to HEAT this morning. AM Standard Freedom 90 Dual Stage Furnace doesn't kick on. Error codes flashes 3 fast blinking RED lights (labeled PORT on circuit board) and then 3 slow blinking GREEN Lights (labeled STATUS on circuit board).

3 flash red on back cover state "pressure switch" fault. Where is the pressure switch? From reading many threads, I blew out all hoses I could with a compressor. Still no luck. Anyone have other ideas?

Thanks in advance

beenthere 10-02-2011 05:00 AM

Check condensate drain.

diyorpay 10-02-2011 09:59 AM

Pressure switch is what hoses attach to. Go to inducer fan to start it.

Consider this video but play around this area of YouTube for more relevant videos. Start up sequence ones in particular.

http://www.youtube.com/watch?v=I86jo...eature=related

dblckmr 10-02-2011 10:09 AM

Still no luck.
 
I have blown out ALL hoses and drain pipes. I even flushed the drain pipe. Still no luck. When the furnace is turned on, Nothing starts up. Only the circuit board lights a red and green bulb. Red flashes 3 and green flashes 3. I have even tried to disconnect the drain hose from going into the conduit drain pipe, because i am positive ALL hoses have been blown out with my compressor.

dblckmr 10-02-2011 10:10 AM

how could I start the inducer fan?

Master of Cold 10-02-2011 10:15 AM

Spin the wheel on the front of the inducer fan. Then turn the heat on. Sometimes they stick.

dblckmr 10-02-2011 01:01 PM

Now I really screwed up. In trying to start the inducer fan some told me to jump the G and R terminals. That just started the blower. But in doing this I screwed up by touching the white(which I think is common and a spark happened. Now the red and green light are on solid indicating system error and not the 3 blinks. Time for a mechanic? Did I blow out the circuit board?:(

JJboy 10-02-2011 01:07 PM

Quote:

Originally Posted by dblckmr (Post 740366)
Now I really screwed up. In trying to start the inducer fan some told me to jump the G and R terminals. That just started the blower. But in doing this I screwed up by touching the white(which I think is common and a spark happened. Now the red and green light are on solid indicating system error and not the 3 blinks. Time for a mechanic? Did I blow out the circuit board?:(

G-R will turn on blower motor.
R-W call for heat normally


Check the fuse.....you should have code error table in the back of the cover

dblckmr 10-02-2011 01:11 PM

Solid red and solid green state internal system error. Not much help. I checked fuses but there is power to the board still.

dblckmr 10-02-2011 01:22 PM

I think the white was labeled B/C. What is that?

JJboy 10-02-2011 01:29 PM

Quote:

Originally Posted by dblckmr (Post 740382)
I think the white was labeled B/C. What is that?


common wire ?

Turn off everything and try again.

dblckmr 10-02-2011 02:15 PM

So, I did blow the 5 fuse on the circuit board. Back to the 3 flashes. Can I jump the R to something to start the inducer motor?

Doc Holliday 10-02-2011 02:20 PM

jump the r to the w for heat.

r is the power, 24 volts. when you touch (jump) that to anything you are making a circuit.

g to bring on fan, y for cool, w for heating.

dblckmr 10-02-2011 02:23 PM

I should be able to hear the inducer, right? I think that's my problem. I can even identify the inducer?

Doc Holliday 10-02-2011 02:27 PM

yes, you should be able to hear the inducer MOTOR coming on. You should be able to see it spinning as well. it has a small fan blade on it.

looks like this.

http://di1-1.shoppingshadow.com/imag...115+Volts+.jpg


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