Question about Samsung AS18A6RB Air Conditioner

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Air conditioner freezing

The low presure line at the outside unit keeps getting ice on it. Then the inside unit starts to freeze up also. Any ideas?

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  • jasoiv30 Jul 23, 2008

    thank you

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Hi, just add gas

Posted on Nov 29, 2008

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Check your filter in the furnace, Then check the coil to make sure it is clean. If neither of these two solutions fix your problem you may be low on refrigerant.

Posted on Jul 23, 2008

  • burzerko
    burzerko Jul 24, 2008

    You are very welcome

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If your vents inside are blowing normal and your filters are clean, more than likely you are low on refrigerant and it will have to be charged. Also check to make sure the fan motor outside is working when the system is on. Hope this helps!

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No cool air is coming out of vents. Checked Filters OK, Cruited breakers OK, vents OK not blocked. Could it be low on freon and compressor froze up and I should wait for ice to melt than possibly get...


Yes let the ice melt on the evap coil and the outside line. You either have a low charge or you might check your filter dryer on the outside lines this could be stopped up. you will will have a temp drop across the filter if it is stopped up. If not it is possible to be low on charge. Is the inside fan turning and turning the right direction. If the inside fan is not turning it will cause the evap coil to freeze up.

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I am not sure if it is a problem.....we recently bought a house with the above heatpump in it. We have noticed lately that the inside unit (not the outside unit) developes a layer of ice on it on really...


If it works fine during the heat of the day, but as soon as it cools down, it freezes up, then you may have a low refrigerant charge. The other things you may check are the indoor filters to make sure they are clean, and check if you are getting good air flow through the vents. Bad air flow can mean you have a dirty evaporator coil if the filters are clean. If the above checks out ok, then you will have a low refrigerant charge and need a technician to come out and charge the unit. What happens is the low charge will cause the pressures/temps to drop inside the unit. When its hot enough outside and warm enough on the inside of the house, its enough to keep it from freezing, but as soon as the outside/inside temps drop, the refrigerant drops below the freezing point and starts to freeze. As for asking if its a problem, definitely. Hope this helps and good luck!

Jul 02, 2011 | Air Conditioners

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My whirlpool acq128xp0 runs great one day, then barely starts the second day, It doesnt have the air volume or cooling it use too. Just started this year. Mike


Mike, when you stated it barely starts, to what are you referring? The compressor (condenser) section has an issue when starting or the indoor fan is hard to start?

If the fan does run, and the condenser unit outside is operating and you are getting lower than usual air flow (compared to previously), you may have a dirty filter, or you may have other obstructions at the evap coil inside the furnace or air handler. It could also be the unit is freezing up and ice on the evap coil is cutting down the air flow. Chances are if the coil is freezing over, you will have two issue that cause this:

Air flow issues (dirty coil, clogged air filter, or other obstructions across the evap coil, such as a plastic bag or pet hair, dust, ect.) which will also cause the coil to freeze over.

The other issue that would cause the low air flow is ice that is a result of low refrigerant.

If the system ran fine in the past, I will rule out it may be inproperly sized. Have you recently had a fan motor replaced on the indoor unit. If so, and they under sized the fan motor, then it could be the fan is not drawing, or blowing enough air across the evaporator coil and this will cause it to freeze over.

Look for ice on the suction line (piping) which is the bigger of the two lines coming from the outside unit (condensing unit). It is also the line that has the insulation covering it. If it has ice on it, then freezing is occuring on the evaporator. If so, then airflow issues, or refrigerant levels are usually the main culprits.

The two lines (suction and liquid) running between your indoor and outdoor unit should feel the following way to the touch of your hand:

Suction should be cold and possibly sweating if exposed (in places where no insulation is present).

Liquid line (smaller line) should be warm to the touch, but not too hot, or too cool. Should feel close to the outside ambient temperature if felt by hand.

Look these issues over and let me know.

Scott

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you need to check your filter to start with if thats good make sure all you vents are open and your returns are free from abstruction

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1 Answer

Inside unit freezing


There are varius items that make the unit inside (air handler) freezes up .If the fan motor in the air handler doesn't work it'llice up.If the filter is dirty it'llfreezes up. If the coil in the air handler is dirty it will freezes up.And if the unit is low in refrigerant(freon) it'll ice up.If is low in gas means there's a leak and before recharged it needs to be fixed.

Apr 23, 2009 | Air Conditioners

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Split unit samsung


Have the freon checked, quickly. This condition can damage the compressor if you let it run like that.

Jul 22, 2008 | Samsung AS18A6RB Air Conditioner

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