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Old 08-09-2009, 12:00 PM   #1
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Need some AC help, please!


Alright, the other day my AC shut off randomly.

I got it running again by replacing the 24v fuse on the Bryant control.

I have a new air filter and a new thermostat, which is wired correctly.

I can feel cool air blowing from the vents and I have the temp at 68 degrees right now... but the thermostat will not go below 78 degrees.

I don't understand it at all.. no windows are open or anything like that.

Seems like a really strange problem... anyone ever experience this before?

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Old 08-09-2009, 01:43 PM   #2
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Need some AC help, please!


how long has your a/c been operating?? outside air temp and humidity?? is your outdoor a/c coil dirty?? and do you know if your compressor is actually on?? condenser fan running??

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Old 08-09-2009, 01:51 PM   #3
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Need some AC help, please!


how long has your a/c been operating?? outside air temp and humidity?? is your outdoor a/c coil dirty?? and do you know if your compressor is actually on?? condenser fan running??
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Old 08-09-2009, 01:59 PM   #4
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The AC has been working fine for over a year. Then just stopped 3 days ago. Now it is back on, but not working properly.

Outside temp: 89 F
Outside humidity: 52%

Outdoor AC coil is not dirty. This outside unit is only about a year old, max. The old one stopped working so we got this one installed.

Not sure about the compressor/condenser part.
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Old 08-09-2009, 02:08 PM   #5
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your condenser fan can be operational but your compressor may be off/tripped internally or locked out on a safety (depending on model of unit and any diagnostics involved). go outside and check. try and feel the temp. of the suction line. this is the larger of the two copper lines and has the insultion over it. see if that line is cold at all and/or sweating??
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Old 08-09-2009, 02:27 PM   #6
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Need some AC help, please!


Went out and felt the insulated copper line. It is a little cool. Not cold enough where I couldn't keep my hand on it. It's not sweating.

I had my buddy take a look at the setup yesterday, he said since I was running the unit on a low amount of freon, the compressor might of suffered some damage from that.
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Old 08-09-2009, 02:37 PM   #7
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did your friend add refrigerant to the system yesterday?? and did you say your a/c had been working ok up to you replacing the 24v fuse?
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Old 08-09-2009, 02:56 PM   #8
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Yeah, he did. He does heating and air for a living. But he's hard to get ahold of which is why I was hoping to find some answers online.

But no, I didn't say that. The system randomly shut down one day. I called my buddy and he came and got it back up and running.

He recommended I buy a new thermostat because the one I had was funky.

I did that and wired it up, and I guess I blew the fuse in the process because the system wouldn't start up again.

But when my buddy got it running, it was doing the same thing as I described in the OP. So I guess it is the compressor after all. Hope I can find the paperwork on this thing.. maybe there is a warranty on it.

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