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    yeshw's Avatar
    yeshw Posts: 5, Reputation: 1
    New Member
     
    #1

    Oct 23, 2006, 11:15 AM
    Furnace inducer motor
    What are the implications of a furnace inducer motor drawing high Amps?
    rickdb1's Avatar
    rickdb1 Posts: 185, Reputation: 15
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    #2

    Oct 23, 2006, 03:59 PM
    Either the motor is on it's way out or there is a possible restriction in the air intake. Both will cause high amp draw...
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
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    #3

    Oct 23, 2006, 07:09 PM
    Sorry Rick, if there is a blockage the inducer is doing little work and the amps will go down. Try this. Put your clamp on meter on a squirrel cage blower motor, now cover both sides and listen, the motor will ramp up, and the amps go down, because it is doing little or no work. How many amps to many? It may be within tolerance. If a electrical connection or relay is a poor conductor, causing a voltage drop, the amps will go up.
    rickdb1's Avatar
    rickdb1 Posts: 185, Reputation: 15
    Junior Member
     
    #4

    Oct 23, 2006, 08:12 PM
    My mistake... But at least I got a couple right on the other posts... Either way, high amps are not good for the motor...
    yeshw's Avatar
    yeshw Posts: 5, Reputation: 1
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    #5

    Oct 24, 2006, 06:50 AM
    It's a carrier 58PAV gas furnace drawing 8.5 amps.
    macx351's Avatar
    macx351 Posts: 18, Reputation: 1
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    #6

    Dec 2, 2010, 08:16 AM


    Those fans just have oilite bushings (they run quieter than ball bearings) which eventually dry out and then the motor will start slowly and won't run fast enuf to create enough airflow and then the pressure switch(s) won't pass voltage to the control because the motor shafts has more friction in the dry bushings. The electricity attempts to run the motor at the design rpm but it takes more amps to do so with the extra drag or resistance from the dry bushings. Yours may have oil holes but probably not. Be worth checking out.

    Before I discovered they were widely available over the internet either from discount HVAC supply places or over eBay, I paid over $200 from the
    Dealer. Then I discovered I could have gotten the same thing for under $100 over eBay.

    They're usually not difficult to replace - a few mounting bolts, the air outlet connection, and usually 2 wires to connect. My wife did it with me guiding her over the phone and she is not the mechanical type.

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