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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?

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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.

Posted on Dec 02, 2014

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Posted on Jan 02, 2017

kstfas
  • 75 Answers

SOURCE: goodman split unit that heats instead of cools

Hi, Could be a run capacitor on the fan motor. They usually swell up and or leak when they go bad. If not, the only real way to test them it with a specific capacitor tester. A new capacitor would be cheaper. Make sure that the outside unit is disconnected from power before opening it up, try to spin the fan blade by hand. If it doesn't spin freely it may need oiled if possible. See above solution. Your problem is the fan motor though so if this don't do it, It will have to be replaced. If this helps, Please rate my solution. Thanks, kstfas

Posted on Aug 31, 2007

relaga58
  • 158 Answers

SOURCE: Goodman wmc24-1a split system - fan stops on dry mode

that's normal

Posted on Aug 11, 2009

  • 40 Answers

SOURCE: goodman a/c unit outside not coming on. buzzing

Sounds like compressor is bad...taken out by a bad contactor.

Posted on Aug 17, 2009

  • 308 Answers

SOURCE: Central air Goodman ck30-1a blowing fuses?

I don't know what you use to heat your house, (heat pump, gas, oil) but if it is not a heat pump, i.e.. you don't use the outdoor unit to produce both heat and cooling, then the first place to look is at the compressor in the condensing unit (outdoor unit). If you have a bad capacitor, it will cause the compressor to pull locked rotor amperage (LRA) for an extended period of time and will cause the fuse to trip (usually within 2 or 3 seconds) The other possibility would be that something got into the wiring and have created a short. I have seen more insect and rodent damage to wires then you can imagine, so this is also a high possibility. Hope this helps

Posted on Apr 03, 2010

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atocrxr
  • 135 Answers

SOURCE: goodman ck36-1a not turning on

ok, you have turned the thermostat to the cooling setting? and turned the temp setting down, so the blower comes on.
As far as the outdoor unit, first thing to do is check the breaker in the electrical panel, next check the disconnect box, that should be located on the wall near the outdoor unit.
It will have a breaker or a set of fuses, that need to be checked, if it has fuses, they have to be tested with a ohm meter, and you cannot tell anything about their condition buy looking at them.
Good Luck.
Sincerely,
Paul Gibson

Posted on Apr 08, 2010

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