I have a A/S 4tee3f49a1000a and today I noticed the fan run continuously. I disconnected the thermostat and still runs. Only way to turn off is the switch.

I think I need a Fan Control Board CNT03600?

Any ideas where I can get 1 and not get ripped off?


ED
:confused:

I check eBay and no one has one for sale right now. That is about the cheapest place you will find one.

Quote:

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Originally Posted by hvac1000

I check ebay and no one has one for sale right now. That is about the cheapest place you will find one.

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Sound like that is the problem?

Yep

Watching this run now I see it comes on faster when the compressor is running then then slow down when it should be off. Any idea how much the cnt03600 board is?

Ed

Is that a variable speed unit with dip switches it might be setup to runall the time on low when system is not running. Read below.

http://www.aireng.com/clientuploads/Coils_etc/4TEE.pdf

That's the unit but in American Standard. It ran correctly until a few days ago.
The switches were not moved and I cannot turn off fan at thermostat now.
I do have the sheet similar to the link with dip settings.

Know what the 2 LED (Y&YO)do?

Thanks
ED

If this is an outside condenser fan that is giving the problem I may have an idea. This motor would be a 240 volt motor and it is possible that one leg of the 240 volts has grounded and is passing 120 volts through the motor making it turn at about half speed, some contactor only break one leg when they are off and still lets 120 volts go through the motor back to the other leg on the contactor that is open. The only way to remedy this situation is to replace the motor, But it is something that you need to confirm before you change motors.
If this turns out to be the problem please let me know.

ED... hope you are sitting when your read this. I've seen that control board, CNT03600 online, with free shipping... for $340.00. Let the fan run and keep looking around.

Which fan are we talking about... the indoor (blower) fan or the condenser fan?. Letmetellu made me wonder to which you were referring.

Sounds like a stuck relay on the control board, try some local Trane or american standard dealers, or like hvac1000 said, eBay, but it's unlikely that you will find exactly what you need there. They are very simple to change, replace wire for wire, and you will have no problem.

That's the unit but in American Standard

Trane is Am Standard.

This is one reason I dislike control boards. A few years ago a 20.00 relay would have done the trick.

Sorry all- I found the problem. The fan switch was on!

We had guests for the week and I guess someone moved the switch.

I forgot there is a 3 minute delay going into off mode!

Now I have to change the motor in the roof fan (On my third motor)

Thanks for all the help!

This is showing the part as a

This `Trane CNT 03600 ignition control board`?? Strange

I saw that it also is a igniter board maybe for a furnace.

I am OK now

Thanks for the help.

Do they put fan control boards on condensers? If so what brand?

Quote:

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Originally Posted by edcp

I have a A/S 4tee3f49a1000a and today I noticed the fan run continuously. I disconnected the thermostat and still runs. Only way to turn off is the switch.

I think I need a Fan Control Board CNT03600?

Any ideas where I can get 1 and not get ripped off?


ED
:confused:

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I Think I can get you one for $25 +$9 Shipping or you can just go

D Williams
[email protected]