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I am replacing the filter dryers on a carrier gemini 38ard024 I'm confused cause there is 2 compressors. so I vacuumed down both sets of lines to 500 microns. Then I filled the high side with r-22 on both compressors. thinking I can finish charging it when I turn it on. I turn it on and it runs for bout a minute and cuts off. my gauges both spike. and the circut breaker pops. It wont run long enough for me to get my pressures accurate. Is it locked out now??? What should I do???

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

22yooper
  • 828 Answers

SOURCE: Compressor starts and doesn't stop

Relay for the compressor may be stuck ( Contacts welded) both the fan and the compressor should operate at the same time. Have the relay(s) checked and possibly replaced.

Posted on May 31, 2008

chillmaster
  • 104 Answers

SOURCE: 5 ton goodman ac unit

You MUST WEIGH IN THE NEW CHARGE OF R-22. There should be a label on the side of the a/c unit that states what the factory charge was. This is only a starting point. Once you have the factory charge in the system, then turn on the unit and allow it to stabilize (5 min) . Check pressure on low side and check teperature on low side pipe. Temperature of pipe should be 8 to 15 degrees above what the boiling point of the refrigerant is for the current pressure you are reading. If the temperature is more than 15 degrees, add R-22 in 4oz increments allowing 5min in between each time you add until you are in the "zone". When you do this, your head pressure needs to be 225-250. if you need to cover the coil or block the outdoor fan to do this then do it. Hook up the vacuum pump and start over

Posted on Jun 18, 2008

relaga58
  • 158 Answers

SOURCE: condensor fan not running after replacement

check fan rotation

Posted on May 31, 2009

  • 340 Answers

SOURCE: rats ate wires in rv carrier 13.5 ducted ac.

You need an electrician be careful

Posted on Jun 20, 2009

  • 233 Answers

SOURCE: i have a ast24rsg-w after 3 minutes the circut breaker blows

this sounds like the compressor has shorted to ground, must be verified by ohm check

Posted on Jul 15, 2009

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1 Answer

Change the ac compressor


Recover all refrigerant. Remove hoses, unplug wiring, remove belt, unbolt compressor. Replace in reverse order. Change filter dryer, replace "o" rings, belt and be sure compressor has oil in it before installing it. Make all hose connection, put vacuum pump on to evacuate system. Charge with engine running through low side lines(the larger one). Check High and Low pressures. Put a thermometer in the duct inside vehicle, turn fan on highest setting and coldest setting. Should get down to about 40-42 deg.

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If it is still operational, I would leave it alone. The tools you would need would be an ocy/act welding pack, a vacuum pump, pipe cutters, and if the unit is R-22, you will need to close the king valve on the condensing unit high sidle (little pipe), and push the contactor in to remove all the refigerant in the line to store it in the condensing unit. To know if it is evacuated, you'll need a set of refrigerant guages. Depending on how much you want to spend, it would be cheaper to have someone come out and do it. The parts I have listed can run you upwards of $500. Plus, you'll need to know what your doing so you don't damage your compressor after changing your coil. You'll also need to replace the dryer once you open up the sealed system.

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You have a severe restriction in the liquid line or at the metering device. I assume these pressures were taken running in the cool mode. I need more information to pinpoint the problem. I would not condemn the compressor until i eliminated all the causes for the odd pressures. Did this problem start suddenly?

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Hello, when ever you change out compressor you need to add a new liquid line filter drier, prsssurise the lines with dry nitrogen, pull a vaccum down to 500 microns, and then add refrigerant to the high side of the system with the unit off untill pressures equalize and you have added enough refrigerant to what the unit calls for. You dont have to use acid away unless it is a burn out.

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I have a 2 carrier condensing unit. One unit has unstable pressure. What is the possible cause and remedy for this problem?


Unstable pressure, as in fluctuating 10 to 50 PSI in a matter of just a minute or two indicates non condensables in the system.

That's usually air, or moisture.

To correct the problem, recover the refrigerant, install a filter dryer, vacuum the system to a -30 micron vacuum and recharge with refrigerant.

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4 Answers

Home air conditioner made a loud noise outside and now it looks like the refrigerant is spraying out of a ruptured line. what can I do?


Let it fish then chk what the failure is. They can be repair but something caused it.Fan failure could have caused high head pressure but it would have had to be extreme or a weak spot in the coils

Oct 15, 2009 | Heating & Cooling

1 Answer

How do you get a compressor to stop knocking like crazy with out replacing it?Im pretty sure there is noncondensables in the system. Can u just pump it down, add a L-line F-Dryer, vaccum it for a while and...


Are there any specs for an oil charge? In theory the line dryer and vacuum pump should draw any moisture out. If you can drain the old oil it may have metal chips from the knocking and then bloe out the compressor with fresh oil. This would mean dicing and splicing the lines to the compressor to purge the old oil.

But then you start with a clean compressor, known quantity of oil and vacuum it down to refill. Is it cheaper than a new compressor?

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1 Answer

I have a carrier Puron unit that is six years old. We had to replace the compresor on the third year, and now it is three years later and the second unit has failed.


I have seen this before when there is an obstruction in the evaporator coil metering device. This causes the compressor to struggle moving the Puron. After the Puron has been recovered make sure that they do a complete check of the metering device and check for other obstructions. When they are done checking they must do a proper vacuum to remove any non condensables like water condensation. Finally they should have installed both a liquid and suction filter dryer to reduce any dirt and stuff. The only other options are unlikely, as we will assume that the last company installed the correct (new) compressor and that they did not do a hack job.

On a happier note, the compressor should still be under the 10 year parts warranty!

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