Simple, the machine is not cycling, you have the temp turned all the way up and the compressor cant cycle on and off. By letting the compressor cycle the cooling fans will melt the ice build up and remove it for the next cycle. As noted by chris above, the unit may be to small to cool your area, thus not cycling just running all the time and freezing up!
Good luck!
2006-08-04 05:27:33
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answer #1
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answered by True Blue 4
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If the unit is to small for your room or house it will NEVER freeze up! The unit does not have to cycle so the ice can melt the point being there should never be ice on the unit. If the technician did not find anything wrong with the unit, then there is usually only one thing that causes this.
If the unit is big enough to cool the room down to 65 degrees or lower, the low temperature can cause the unit to freeze up.
Around 65 degrees, the refrigerant pressure can get low enough that the refrigerant gets below 32 degrees. The moisture on the coil will turn to ice. This ice starts to block airflow which makes the coil even colder. Eventually the whole coil is frozen. If this condition is happening at night when the temperatures are cooler then it is much easier for the unit to freeze because at night the unit may be getting the room or house down to 65 degrees or below. If ice has formed at night then during the day it will most likely not melt because the ice is covering enough of the coil to stop or slow down airflow. The ice acts as an insulator and prevents heat from being absorbed into the refrigerant and will not go away until the unit is shut off long enough for the ice to melt.
If this is the problem, the only solution is setting the temperature a little higher.
If this is not the problem, you need to call out a different technician.
2006-08-04 14:10:47
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answer #2
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answered by foy_d 2
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If it is a window unit take the cover off and clean the inside of the unit.
Or it could just be too small of a unit for the area.
2006-08-04 12:24:13
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answer #3
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answered by Maxwell Smart(ypants) 7
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Did you check the filer? A dirty filter can reduce air flow enough to cause the unit to ice up.
2006-08-04 12:36:13
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answer #4
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answered by Jeffrey S 6
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Take a level, and make sure your unit is sitting level, so that the fluids are not straining to circulate.
2006-08-04 12:22:02
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answer #5
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answered by metrobluequeen1 3
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You didn't get the answer from the HVAC guy? Bett get your money back and get a new guy.
2006-08-05 07:19:18
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answer #6
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answered by Anonymous
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might need to clean the coling coil
2006-08-04 12:21:18
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answer #7
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answered by bzc3004 1
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I concur with Foy d.
2006-08-05 10:02:37
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answer #8
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answered by Anonymous
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maybe your leaving it on too long, mine does that sometimes
2006-08-04 12:20:52
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answer #9
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answered by broken_dreams2637 2
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