Question about Samsung AS18A6RB Air Conditioner

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Split unit samsung

The outside unit has ice on the low presure return line. The inside then begins to freeze up also. I cleaned the filters and the coils. Any sugestions?

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  • jasoiv30 Jul 25, 2008

    Thank you

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Check for leak, you need a qualified technician for this problem.

Posted on Aug 05, 2008

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

Posted on Jul 24, 2008

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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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Why does my one pipe freeze when I run the ac and does not seem to cool very well


If the return line is freezing, as you describe, it typically means that you aren't getting enough air across the expansion coil, causing a large block of ice to build up inside.
Once that happens, you'll always get ice on the return line.
Try cleaning the filter or whatever the AC uses to keep the air clean.

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My lines are freezing and the ac works sometimes and sometimes it doesnt. How do I avoid the lines from freezing


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Aug 25, 2010 | Honeywell Air Conditioners

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My daughter has a Bryant AC Model number 563AN048-A where the outside coils are freezing up. The repairman has been out twice and has cleaned the coils on the inside and outside units and has checked the...


Hi, this is a 4 ton unit, Bryant are top of the line, I believe so as I have worked on them for so many years. They were Day & night, just a name change is all. Here is what sounds like your problem is, or is your problem. Did the tech check the TD of the supply air and return air? This is the temperature difference. There should be a TD of 18*f to 25* TD or temperature split. Example is, if the supply is 56*, the return at the filter should be at around 76* which is a 20* TD. If the outdoor condenser started to defrost when you removed the filter, you were getting more return air through the evaporator coil. This tells me that your return air duct has either come loose, has a large hole or holes in it, or if you had a repairman under the house or in the attic where ever the duct work is, has flattened it, and you are not getting enough return air back through the evaporator coil. This will cause the condenser coil to ice up quite fast. When you remove the filter and panel, you should feel a pulling almost like a magnet as the return air will be a strong force. This is your problem if all coils are clean and the system is charged properly, this is the only way the outdoor coil will ice in the summer. If the indoor coil were dirty, or low on freon, the indoor unit would be the coil with the ice build up. You say the air increased slightly, and the outdoor coil started to defrost. The problem is the return air 18" duct is either crushed, Holes from pests, or has come lose at some point. This is all it could be, mark my word!! Have it checked, or if you are able to check it, you can maybe hear it where ever it was put in, up, or down under. Find it, and you will increase the CFM by 50% depending on the leak. Please keep me posted on this and when you rate me be kind as I know you will. Trust me, this is your problem. Please keep me updated by my user name below.
Sincerely,
Shastalaker7
A/C, Heating, & Refrigeration Contractor

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1 Answer

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ok, on these units, if by high side line you mean the small tube going from outside to inside, that tube is actually on the low side, the metering device is in the outdoor unit. If you shut the unit down, let everything thaw then restart and find that small tube is freezing up right at the outdoor unit right away, my guess is its low on charge. I see that you put some in, make sure it is the right knid of refrigerant. they do not hold alot. Where is your suction pressure running. If you put 2 to 3 pounds with no change, you may have overcharged but that is telling you that there is a restriction in the line inside the outdoor unit, probably the filter if it has one, or the metering device itself. Let me know what you find.

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1 Answer

The unit is not cooling. have noticed ice on the line in the unit outside.


if one or few pipe may not aproblem may be the thermostat is aet to very low cool anf the fan on low speed or the thermostat is defective also if this icing is growing up means
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1 Answer

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1.check filter if really dirty change
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2 Answers

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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.

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3 Answers

Ruud heat pump


If the top of the compressor is freezing you either have low refrigerant or a restriction in the coil. Check the air filter and change if necessary. Turn the outside unit off using the outside disconnect found a few feet away from the condenser. Let the indoor unit blow air for a few hours to melt the ice off of the coil. Turn back on the outside unit and after about a half hour, you should feel the cool air from your ducts. If the cool air gets warmer over the next hour, you will need a tech to look for leaks and recharge your unit. If it continues to blow warm air even after the 3-hour wait, you have other issues. To answer your original question, on the indoor unit you will find access panels that can be removed for inspection and cleaning. They are commonly located where a 3/4" drain pipe exits the cabinet. While the unit is off, remove these panels and inspect for a buildup of debris. Good Luck!

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3 Answers

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Hi, Reduced air flow, low on freon or being continuously run during cooler weather such as at night. Some people turn their thermostat on 60 thinking that it will help get it cooler faster. They freeze up at night and don't get a chance to thaw during the day. It needs set no lower than 75 or so. The evaporator may be dirty. Don't know a lot about your particular unit but if the outside unit has the compressor and refrigerant lines running to it, The large refrigerant line should sweat all the way to the compressor if its fully charged. Please rate me if I have helped. Good luck kstfas

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