The AIR CONDITIONER Mystery Revealed

One of the very most frustrating problems with a window air conditioning equipment is if it starts to ice up. For who owns the air conditioner is could be perplexing.

When this problem occurs most people immediately believe that it is the fault of the refrigerant gas. More often the cause is the consequence of other difficulties.

It is most often the result of poor airflow.

Any time the airflow through an air conditioner is fixed the coolant system becomes affected. If taken 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 rather than an air conditioner. Instead of simply cooling the air it will collect and hold moisture. The moisture will freeze onto the cooling coil where it will appear as ice.

The principal job of an air conditioning equipment would be to de-humidify, not refrigerate, the room air. By removing the moisture from the area air it gives us a feeling of comfort. To get this done although temperature of the cooling coil must always be higher 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 several problems that can result in your air conditioning equipment icing up:

1. Dirty filter.
In order to avoid this replace or clean your filter every couple of weeks of the cooling season. If a smoker do it every week. To clean filter remove from air conditioning equipment, wet thoroughly, and lay in bottom of a sink. Sprinkle detergent (laundry detergent works well) onto filter surface. Allow to sit for a couple of minutes. Add hot water to sink in order that filter is totally covered. Soak for a quarter-hour. Remove from water and rinse. Allow to 清洗浴室寶 . Dirty or blocked cooling coil.
An air conditioner requires regular maintenance. Usually every several years. Every year would be best, but this is often costly unless you do-it-yourself. During cleaning the cooling coil ought to be degreased and washed to remove accumulated dirt and debris. Degreasing is important 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 long this can result in the cooling coil becoming partially blocked. This will produce a lower airflow.

3. Dirty or blocked condenser coil.
The condenser coil is the one guiding the air conditioner. Its job is to dissipate the heat that’s being removed from the area. Just like the cooling coil it too should be cleaned every few years. Since the condenser is on the outside of the home it becomes exposed to a great deal of 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 clean this part the air conditioning equipment must be completely disassembled. If not cleaned regularly an airflow blockage here can even 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 inner 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 down the cold control. It can hover just above the cut 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 among the other faults discussed in this posting.

5. Not enough refrigerant. Too much refrigerant.
Both scenarios can result in and icing condition. If your air conditioner was repaired recently suspect an excessive amount of refrigerant. Blended with an airflow problem this could be difficult to diagnose. Or even 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 outside temperature is too low the air conditioning equipment pressure-temperatures can be affected. Once the outside temperature falls the cooling coil temperature may also fall. So much that the coil will refrigerate the room air. This will bring about 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 cause of icing up. If this problem is suspected try running the air conditioner in the fan only position. Leave the re-circulating vent open. This can circulate the room air without cooling it, while bringing in a small amount of outside air during the night.

Leave A Comment