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There is humming but the fan is almost not spinning

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Goodman air handler ARUF036-00A-1A does not blow air in heating or cooling mode only hums/buzzes, what could it be?


Looking at the wall thermostat, you will see the fan switch that has two settings: fan auto, fan on.
You will need to place the fan switch in the fan on position for testing purposes.
This will make the indoor fan run continuosly, and never cycle off.
In the fan auto position, the fan will turn off when the thermostat temperature setting has been satisfied.
Remove the air handler access panel.
Is the air handler fan operating?
If the fan isn't working see if you can listen closely if it is humming, or can touch the motor to see if it is hot.
If it is humming and has a bad capacitor, you can tell this without having an electrical tester by spinning the fan wheel by hand.
Be very careful... making sure your hand won't get cut by the fan wheel spinning when it starts up.
If the fan spins and picks up full speed, replace the defective fan capacitor.
It is the shiny silver metallic cylindrical object with electrical wires attached to it.
Make sure you write down where those wires attach and turn the power off before removal as they carry 240 volts to the fan motor.
If you find that the fan wheel doesn't turn freely when you try to spin it by hand, the bearings have seized and you will need to find another fan motor of the same size, shaft length , speed , and horsepower to replace the defective motor.
Keep in mind that a humming sound in the air handler COULD be from the transformer instead of the fan motor.
The transformer is a black cube shaped device with electrical wires attached to it.
If the 24 volt transformer goes bad, your thermostat will not function and nothing will come on.

Dec 01, 2014 | Goodman Heating & Cooling

1 Answer

Goodman clt60-1 fan not working loud humm


The hum is a good indication that the fan is getting power. Therefor, the fan is locked up or it has a weak capacitor. Attempt to spin while power is off. It should spin freely. if not, you will need to replace the motor. If it spins freely, I would attempt to spin the fan blade while it is humming. If it starts running fine, it is very likely the capacitor. If not, then replace the motor.

Sep 08, 2014 | Goodman Heating & Cooling

1 Answer

Ack the fan doesn't sound like it's working. When we turn it on I hear an electrical hum, but no fan sounds. Turning the fan up to 3 doesn't change the elecrtical hum, but since I can hear that I assume...


Yes Dan the hum means power is going to the fan motor but the shaft is seized. If the photo on this site depicts your rangehood you may be able to fix it. Turn the power to the unit off. Remove the upper cowling. You should be able to see the fan. Sometimes it only takes a spin of the fan and a bit of spray on lubricant on the shaft to free it up. If it spins freely then turn power on and give it a try. Some fans will be seized tight and no matter what you do they won't spin. This means it's time to get a new fan motor.
Good luck.

Feb 27, 2011 | Frigidaire (PL36PC50EC) Stainless Steel...

2 Answers

Hums but wont fire


Remove the top cover, plu it back in and see if the hum goes away, if it
doesn`t look to see if the fan is stuck, if it is unplug and try to spin it
by hand, if it wont spin replace the fan motor

Feb 12, 2010 | Reddy Heating & Cooling

2 Answers

Model # yg2047b. I had this fan installed in June, worked fine,now it hums..what could the problem be?


If the fan does not spin and the motor hums, you have a stuck rotor. It may be due to bushing/bearing alignment problem or a lubrication problem.
Try to spin the fan blade manually. It should turn freely, otherwise the rotor is stuck. Remove fan blade and put few drops of lubricating oil on the bushings/bearings and manually turn the shaft to free it up. Alignment of shaft and bushings/bearings must be after lubrication is done and the rotor is still stuck. Move the shaft up and down and side to side until it smoothly spin when manually turned.

Aug 30, 2009 | Hampton Bay 24750 Huntington III Ceiling...

1 Answer

Duo-therm mod # 57915 not cooling fan?????


need to get at the capacitor for the fan. Try spinning blower when it hums. If it runs then the cap is bad if not the motor.

Aug 13, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Air Handler Blower Unit Humming


More then likely it's the transformer. It may be getting weak. I've seen them hum/vibrate almost new and last for years. It's more an annoyance than anything.

Jan 18, 2009 | Heating & Cooling

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