Notes

If You Do Not (Do)AIR CONDITIONER Now, You Will Hate Yourself Later
One of the most frustrating problems with a window air conditioner is if it starts to ice up. For who owns the air conditioner is could be perplexing.

When this problem occurs a lot of people immediately think it is the fault of the refrigerant gas. More regularly the cause is the result of other difficulties.

It is most often the result of poor airflow.

Any time the airflow via an air conditioner is fixed the cooling system becomes affected. If taken up to extremes the critical pressure-temperature balance of the cooling coil could be changed. Should they drop too low the cooling coils surface temperature can drop below the dew point temperature of the area. When this happens the cooling coil will begin to operate as a refrigerator instead of an air conditioner. Rather than simply cooling the air it'll collect and hold moisture. The moisture will freeze onto the cooling coil where it will appear as ice.

The primary job of an air conditioning equipment would be to de-humidify, not refrigerate, the area air. By detatching the moisture from the area air it gives us a feeling of comfort. To do this though the temperature of the cooling coil should always be greater than the room's dew point. If it's permitted to drop below the dew point the air conditioning equipment will begin to produce ice.

With this information at heart the following are a few problems that can result in your air conditioner icing up:

1. Dirty filter.
خرید چیلر To avoid this replace or clean your filter every little while of the cooling season. In case a smoker do it weekly. To clean filter remove from air conditioning equipment, wet thoroughly, and lay in bottom of a sink. Sprinkle detergent (laundry detergent is effective) onto filter surface. Allow to sit for a couple of minutes. Add warm water to sink in order that filter is completely covered. Soak for a quarter-hour. Remove from water and rinse. Allow to air dry.

2. Dirty or blocked cooling coil.
An air conditioning equipment requires regular maintenance. Usually every several years. Every year will be best, but this can be costly unless you do it yourself. During cleaning the cooling coil should be degreased and washed to remove accumulated dirt and debris. Degreasing is essential to remove any coatings on the coil. Or even done greasy residue can trap and hold air borne particles. They will build up on the coil and affect heat transfer. If left too much time this can result in the cooling coil becoming partially blocked. This can produce a lower airflow.

3. Dirty or blocked condenser coil.
The condenser coil may be the one at the rear of the air conditioning equipment. Its job is to dissipate the heat that is being removed from the area. Similar to the cooling coil it too should be cleaned every few years. Since the condenser is on the outside of the house it becomes exposed to many dirt, pollen, and smog. Since airflow direction is from inside to outside it is the inside surface of the condenser that becomes dirty. Therefore to completely clean this part the air conditioner must be completely disassembled. Or even cleaned regularly an airflow blockage here may also burn out the compressor. Before this happens though the lowering of airflow will affect the overall operation. This can result in the compressor efficiency dropping, the internal pressure-temperature relationships being affected, and the resultant production of ice on the cooling coil.

4. Inefficient compressor.
As describe above an inefficient compressor could cause icing up. If the compressor is not able to pump the refrigerant properly the cooing coil might not get cold enough to shut off the cold control. It can hover just above the take off point. When this happens the cooling coil will begin to refrigerate. Ice on the cooling coil will result. If the compressor itself reaches fault the air conditioner should be replaced. But remember that many icing problems are misdiagnosed as bad compressors when they were actually one of the other faults discussed in this post.

5. Not enough refrigerant. An excessive amount of refrigerant.
Both scenarios can lead to and icing condition. If your air conditioner was repaired recently suspect an excessive amount of refrigerant. Mixed with an airflow problem this could be difficult to diagnose. If not repaired recently then suspect airflow problems before considering a refrigerant imbalance.

6. Outdoor temperature too low.
Icing can occur if the exterior temperature falls below 60 Degrees Fahrenheit. If the exterior temperature is too low the air conditioner pressure-temperatures can be affected. Once the outside temperature falls the cooling coil temperature will also fall. So much that the coil will refrigerate the room air. This will result in the cooling coil beginning to produce ice. This problem is more prevalent in the fall. If it is hot during the day but cold during the night suspect this problem because the reason behind icing up. If this issue is suspected try running the air conditioning equipment in the fan only position. Leave the re-circulating vent open. This can circulate the room air without cooling it, while attracting a small amount of outside air during the night.
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