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    TeG's Avatar
    TeG Posts: 4, Reputation: 1
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    #1

    Apr 23, 2007, 10:58 PM
    Intermittent blower
    Today was the first day I turned on the A/C. and I'm having an intermittent blower motor problem. Everything comes on fine, but the blower motor inside the house will only run for a minute or two then shut off, but the ac unit outside keeps running? Anybody have any idea what I need to check?.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Apr 24, 2007, 04:01 AM
    It could be a relay or the motor could be going bad. Does the blower motor come back on after it turns off by itself? See if the motor is overheating. Let the blower run in A/C mode. Then when the blower cuts off TURN OFF THE POWER TO THE INSIDE UNIT and feel the blower motor with your hand. If it is real hot the motor is probably defective. I put the instructions in LARGE CAPS so you would read it and turn off the power for your safety.

    If the motor is just warm then it could be the blower fan relay that kicks the motor on during cooling.
    TeG's Avatar
    TeG Posts: 4, Reputation: 1
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    #3

    Apr 24, 2007, 04:12 PM
    Quote Originally Posted by hvac1000
    It could be a relay or the motor could be going bad. Does the blower motor come back on after it turns off by itself? See if the motor is overheating. Let the blower run in A/C mode. Then when the blower cuts off TURN OFF THE POWER TO THE INSIDE UNIT and feel the blower motor with your hand. if it is real hot the motor is probably defective. I put the instructions in LARGE CAPS so you would read it and turn off the power for your safety.

    If the motor is just warm then it could be the blower fan relay that kicks the motor on during cooling.

    Yes after a minute or two the motor comes on by itself. I'm at work now so can't check the temp of the motor, but I will when I get home. Thanks...
    TeG's Avatar
    TeG Posts: 4, Reputation: 1
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    #4

    Apr 25, 2007, 06:02 AM
    Ok tried it out and the motor is not hot at all. What to check now?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #5

    Apr 25, 2007, 12:06 PM
    Post the brand amd complete model number of furnace. I will need it to see if I can find a wiring diagram.
    TeG's Avatar
    TeG Posts: 4, Reputation: 1
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    #6

    Apr 25, 2007, 03:45 PM
    Sorry about that, it was a false alarm. I did a reset on my thermostat and started back up last night and it ran for about 2-3 minutes and the inside unit cut off, I unpluged it and felt the motor and it was quite hot. Also noticed it was very dusty, do you think it's shot or could it just need to be taken out and cleaned up?
    Thanks for your help also...
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