Question about Bryant 462AJC021BA Air Conditioner

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Bryant High Efficiency Unit, runs constantly, I suspect the thermostat. Fan control and thermostat were replaced. The installer was to familiar with the installation. Could you please give me an idea of what could be the problem. Thank you for your assistance. The unit is over 20 years old. If replacement is required what would you suggest?

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Any unit over 20 years is no longer energy efficient & it is past the lifespan of an AC. Get quotes from 3 different companies & go with best price with best warranty. I'm not partial to any particular manufacturer. They all get their parts from overseas.

Posted on Dec 06, 2013


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Posted on Jan 02, 2017

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SOURCE: Bryant Legacy Line air conditioning not blowing cool air..

Your outdoor condenser is in heat mode. Check the wires on the thermostat. Sounds like a small wiring problem and nothing else. Good luck. Please keep me posted as to you progress.

Posted on Apr 27, 2009

  • 91 Answers

SOURCE: Noisy Bryant Air Conditioner with Puron Regrigerant Model 113A

Steve, From your description you may have some debris on the inside of your A\C line. When you install a split system there needs to be a filter drier installed to collect any excess solder\brazing material or any other solid or moisture contaminents. A miniscual piece will lodge in the metering device then sometimes push through go through the compressor and make another pass. Making horrendous noise and sometimes tripping the breaker. A drier is usually a blue cylinder on the smaller line right before the indoor coil attached to your heater. Some Techs put one by the outside unit. If you dont have a drier it may void your warranty.

Posted on Jul 11, 2009

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SOURCE: Bryant-Carrier Furnace Fan Stays On

Hi, you have replaced the stat several times, and adjusted the anticipator so its not the stat.This is a split gas/elect unit, and working on these for many years and looking at some of the solutions given, they are right.You need to be looking at the Furnace fan control.Units of that age they do tend to stick open and run constantly.I doubt its the fan relay, maybe if you were in the cooling mode.Fan controls are not that expensive. You probably have a Honeywell 7" to 11" Probe, with the auto/manual button, with a temp dial to set you're on off temps. I would inspect the heat exchanger for any signs of cracks or bulging being its that old. If you find any, you are looking at carbon monoxided and should be thinking about an upgrade soon.Also flame roll out.I am thinking of you're safety is all.If you do have this type of fan control, there is a tab that has to be cut before you install for 24v. control.It comes set for 120v. and will burn out all of your 24v. componants.Those old Bryants will run for years. Good Luck!

Posted on Nov 14, 2009

  • 246 Answers

SOURCE: The inside unit on my

I would think that when you changed the fuses you 'cured' the problem - which was a blown fuse(s) - but now you have the same problem again - a bad fuse(s).

To test this - you could replace the fuses again - but first - I would make sure that the fuses you are using are 'time-delay' fuses. It should say on the fuse itself 'time-delay' or 'dual-delay' or something like that.

If you're using fuses that are not 'time-delay' your problem could be solved as easy as buying some 'time-delay' fuses.

However, -- fuses blowing -- are usually caused by electrical motors - i.e. compressor/fan motors - breaking down 'electrically' - and heating up and causing the amp draw to increase past the point of the fuses, i.e. a 40 amp fuse will blow when the AC starts to exceeds that rating.

One "longshot possibility" - is - if the condenser is 'really dirty' - it will cause the compressor to run hot and possibly cause the fuses to blow. I would make sure 'all power' including the inside thermostat is "off" - and then 'wash out' the condenser (the coil in the outside unit) real good with a water hose.

Of course another possibility is that you have a loose electrical connection(s) somewhere in the AC. If you're inclined to - you can again - make sure all power is off - and poke around in your AC looking for loose wire connections. Just be sure 'all power' is off before you do this.

If you are using 'time-delay' fuses and your condenser is 'clean' and you can't find any 'loose connections' - and you continue to have the same problem (blowing fuses) - I would suggest calling a Service Tech.

Note: never replace a fuse with a bigger fuse, i.e. if the fuses in your unit are 40 amp - 'do not' put in 50 amps.

It is possible that the fuse(s) you are using are not the 'right size' but that would have to be determined by a Service Tech and actually - is not a strong possibility, although certaintly possible.

hope this helps

Posted on Aug 14, 2010

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SOURCE: no power to ac unit

Check the breaker for the unit or check to see if the disconnect by the unit in the attic has fuses that may be blown.
If the breaker is tripped or the fuses blown, then check to see what caused them to blow...


Posted on Aug 16, 2010

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2002 4 ton Bryant air conditioner shuts off, fan still runs but not cooling is problem in the controls in the attic or in the AC unit or both?

With a non heat pump it is a simple 24 volt AC control circuit. In the attic there is a relay that is actuated via the fan control wire directly from the thermostat. On the thermostat there is an auto/man switch that controls the fan. Manual the fan runs all the time. Auto fan turns on and off with the outside compressor.

If the system is not calling for cool and the fan continues to run the fan relay is sticking. common problem. Sometimes after running for several days the relay will stop sticking if not, replace relay.

If the system is calling for cool and the compressor stops I would still expect the fan to run until thermostat tells the A/C to off. Some compressor units include a safety switch or high-pressure cut-out switch A blocked internal valve bad control board or external fan in outside unit defective no air flow in outside unit.
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Suggest turning temp max cool and observe. If acceptable cool and the compressor runs without interruption all is good, except for the blower in the attic. Safely check relay in attic blower circuit.

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Aug 19, 2010 | Bryant 462AJC021BA Air Conditioner

1 Answer

I've a Bryant AC/Heat system. Model 661CJ030-A. It run cool okay but the fan kept to running even get to the point that has been set.The system seemed not auto stop. Any ideas,

Hi if the indoor fan continues to run after the unit is done cooling, you either have a fan relay located in the indoor unit that is bad or stuck, or a problem in the thermostat with the fan contacts not opening when its satisfied. Pull the cover from the thermostat to expose the wiring. Find the G/Green wire. This is the fan wire. Take a small screw driver and carefully loosen screw and take this wire off. Give it a couple of minutes to see if it shuts off. If it does shut off, the thermostat is faulty and you will need a new one. If it still runs, you will have to check the indoor unit and find the fan relay. If this system is gas fired for heat, it will have a combination fan/High limit control that is the problem, more then likely stuck. Look at the wiring diagram on the panel and it will show you the fan control. You can try tapping on it to see if you can un- stick it. If not, it will need to be replaced. If its just a fan relay, it will be black about the size of a wooded match box with around 5 wire terminals on it. If you have someone turn the stat on and you should be able to hear it click. Do the checks with the stat and let me no the out come and we can go from there.

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Bryant-Carrier Furnace Fan Stays On

I suspect a bad fan relay or bad fan control. Maybe the longer the control or relay is in the on position the more chance of it sticking on.

Oct 17, 2009 | Bryant 462AJC021BA Air Conditioner

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