Question about Omega Trane Furnace Draft Inducer Blower 115 Volt Variable Speed Fasco # A190

2 Answers

Draft inducer blower going bad

I have a Trane XE90 (1994) furnace. The power vent fan is making noise and I am in the process of changing it myself.
The FASCO blower unit is listed as 7062-3956 at 3450 rpm.
My repair man ordered the replacement unit. It's not the same. My unit has a electrical box attached on the side of the motor. The replacement P/N D342094P03 doesn't have that attachment and is listed at 3400 rpm.
His supplier said that is the replacement.
All I need is agree or disagree.
With the internet I can see the numbers and I cannot find anywhere that will support the replacement part.

Posted by on

  • acam4 Jan 18, 2009

    My only thought is that I'm dealing with carbon monoxide exhausting out doors. Some engineers calculated, in the 90's, that a 3450 rpm blower was warranted to exhaust the carbon monoxide from this furnace.

    Now 15 years later I'm even thinking, what's 50 rpm less and so what it doesn't have that electrical box on the side of the motor that I'm not aware of it's function.

    The new furnaces have advanced techniques that can encompass 3400 rpm or perhaps less was my thought process .

    I'll probably wind up using it but had to run thru the if's and and's.

    Thanks

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The Fasco book says the correct replacement numbers are as follows:
"7062-3956 = D330757P035 = Fasco # A130" . If the one your installer has needs to be modified to fit, I'd find another installer!

Posted on Feb 01, 2010

  • sprky Feb 01, 2010

    I have similar problem with my Fasco equivalent #A145. I'm pretty sure
    it is a bad motor bearing. Electrical box on the side of the motor
    usually holds the small capacitor the motor needs to run properly. It
    should not be a problem if the motor run capacitor is mounted on an
    external bracket, as long as the rest of the replacement "draft
    inducer" fits perfectly and moves the same amount of air!

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I agree close enough. Only slightly slower. If it fits mechanically , useit.  

Posted on Jan 17, 2009

  • Thomas F. Schneider Jan 18, 2009

    The electricial boxs seem to be on a lot of the old motors that I have changed out. I am fairly sure that when you open it ,it will only be there as a junction or to change speeds on a multispeed motor.

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Pressure switch is not proving that the inducer fan is running. First check to see if draft inducer fan is running that will be the small black fan that is hooked to the vent pipe. If fan is not running then replace fan. If fan is running then check the small rubber tub that runs from inducer blower blower to draft switch make sure the hole in the blower cage is not stopped up with rust you can clear this with a sewing needle. If this is clear then check the pressure switch with a volt meter make sure it is getting 24 volts to the switch and through the switch. If it is getting to switch and not through switch then replace the switch.

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Are your air filters relatively new? Is a bird nesting in your units combustion air exhaust pipe? Does your draft inducer motor run before and after the gas has ignited? Check and confirm these 3 things first. Good Luck!

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Sunbinder...you will need to do a little troubleshooting. Turn it off again and wait 20 minutes then back on. If no noise or odor. Are you certain that the smell came from the blower. "Thru-out the house is a lot of smell. Listen closely on startup and running....any unusual sounds. ? Which fan are you talking about ? Furnace ? Vent like bath or kitchen ? If you are handy you can check the wiring connections to be sure they are secure and making good contact with tight wirenuts or screws etc.

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