York A/C blowing hot air

02excursion · May 25, 2011

Hello All,

We returned home from a long weekend to a hot home. when we left we set our thermostat to 72 degrees, when we arrived the A/C unit fan outside was still spinning but when we walked upstairs to our unit we walked into a +85 degree home. The first thing i checked was to make sure the thermostat was set to cool ( which it was) and that the fan was set to Auto (which it was). Next i checked was the furnace in my laundry which i could hear the blower motor working. Everything seems to be working fine but all we have is hot air blowing from all our vents? I replaced the air filter for the furnance motor seeing if that would help.......i had no luck.
We are looking for any suggestions as we know prior to us leaving that the York A/C unit was working properly.
Thanks

02ecursion

beenthere · May 25, 2011

Is the compressor running, or just the outdoor fan?

gregzoll · May 25, 2011

Go outside and check to make sure the unit is running. If not, call a HVAC company to fix. Could be a capacitor, could be that your yard guy or a critter cut the wire that goes from the unit to the indoor unit, so it knows when to power up. Really could be anything, and there is no way that the Internet can fix it.

brandonmcginnis · May 25, 2011

If his condensor fan is running I'd bet he has control voltage at the ODU.

The Internet can fix a lot of things if the right information is provided.

DougEFresh · May 25, 2011

If condensor fan is running and the compressor isn't, first thing I would check is the capacitor.

gregzoll · May 25, 2011

DougEFresh said:
If condensor fan is running and the compressor isn't, first thing I would check is the capacitor.

Or disco, cut or nicked control wire outside would be the other.

02excursion · May 25, 2011

Hello All,

What is a condenser fan and a compressor fan? I apologize im a newb to this lingo. All i know is the fan on the actual a/c unit that's outside is spinning, inside my laundry room i have a furnace that blows/moves the air through the vents and from what i can tell it's working before we left for our long weekend.
If this helps last summer we had a HVAC tech out here to replace a switch or maybe it was called a capacitor on the a/c unit outside ( im not sure what it was called?) when the tech was here we asked if we needed to recharge our unit with freon, he told us that he would top off our unit with some freon.

Can someone take a picture and post them on this thread of what a condenser and compressor fan looks like?
Thanks again for taking the time to help out a newb.

02excursion

02excursion · May 25, 2011

brandonmcginnis said:
If his condensor fan is running I'd bet he has control voltage at the ODU. The Internet can fix a lot of things if the right information is provided.

what is an ODU? im such a noob when it comes to this lingo?

Thanks

02excursion

02excursion · May 25, 2011

beenthere said:
Is the compressor running, or just the outdoor fan?

i apologize what is a compressor?

Thanks

02excursion

GetYourShineBox · May 25, 2011

DougEFresh said:
If condensor fan is running and the compressor isn't, first thing I would check is the capacitor.

i usually check my gauges first. if the compressor isnt running but i have normal pressure sitting with it off then i can tell its something electrical with the compressor. if its low or bone dry then i know i need to add refrigerant to see if the compressor then kicks on before looking at electrical.

GetYourShineBox · May 25, 2011

02excursion said:
i apologize what is a compressor?

Thanks

02excursion

you would hear it kick on either with the condenser fan motor or soon after the fan motor starts. makes a humming sound. like when your fridge makes that click sound and hums.

Ducthunter · May 26, 2011

gregzoll said:
Or disco, cut or nicked control wire outside would be the other.

Wouldn't be the control wire because the contactor is engaged to make the condenser fan operate, could be the disconnect I guess if one fuse was blown.

To the OP: Condensor fan is the fan on the AC that you said is spinning, the compressor is what moves the refrigerant from the AC to the coil sitting at your furnace. It sits below that spinning fan in your AC
ODU- is out door unit or your AC

02excursion · May 26, 2011

Ducthunter said:
Wouldn't be the control wire because the contactor is engaged to make the condenser fan operate, could be the disconnect I guess if one fuse was blown.

To the OP: Condensor fan is the fan on the AC that you said is spinning, the compressor is what moves the refrigerant from the AC to the coil sitting at your furnace. It sits below that spinning fan in your AC
ODU- is out door unit or your AC

Thanks now I know what a compressor and condensor are....is there a way to tell if my compressor isn't working ? I can see that the condensor fan is clearly spinning so I'm ruling out that this is the reason why my ac is blowing hot air.

Thanks
02excursion

gregzoll · May 26, 2011

Go where the lineset enters the house to where they are going to the air handler (inside unit/ie furnace) and listen for a sound like fluid mixed with air. You can tell then if the compressor is moving the freon. Sounds kind of like a humming sound. Also, if you listen to your neighbors outside unit, and compare to your's, you can tell by the sound if the compressor is running also.

Post the model #s of the outside and inside unit, and age if available for both. At this point, it would be worthwhile calling a company to come look, since it will start heating up real quick after this Friday.

02excursion · Jun 2, 2011

gregzoll said:
Go where the lineset enters the house to where they are going to the air handler (inside unit/ie furnace) and listen for a sound like fluid mixed with air. You can tell then if the compressor is moving the freon. Sounds kind of like a humming sound. Also, if you listen to your neighbors outside unit, and compare to your's, you can tell by the sound if the compressor is running also.

Post the model #s of the outside and inside unit, and age if available for both. At this point, it would be worthwhile calling a company to come look, since it will start heating up real quick after this Friday.

i apologize for the late response but i was away on business, the model for the ODU is H1CB030S06A and the Air handler ( furnace inside my laundry room) is P3UGD12N08001B, both units are made by YORK.

I don't hear that humming sound like its moving freon?

Thanks again for everyone's input.

02ecurion

NitrNate · Jun 2, 2011

when the compressor is running, it is pretty obvious. the fan running by itself is extremely quiet. a compressor is essentially a single piston engine and it makes a piston-like noise when it is moving up and down (or side to side).

02excursion · Jun 2, 2011

Hello all,

I have update on my ac problem. I was out of f22 freon,I called a serviceman too look at my odu. As he was adding freon we both saw a mist coming from our wall, we clearly saw a leak .
Im going to need an a/c unit and furnace. I want to thank everyone for there help.
02excursion

York A/C blowing hot air

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