10 Unforgivable Sins Of AIR CONDITIONER
One of the most frustrating problems with a window air conditioner is if it starts to ice up. For the owner of 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 regularly the cause is the consequence of other difficulties.
It is most often the consequence of poor airflow.
Any time the airflow through an air conditioner is restricted the coolant system becomes affected. If taken up to extremes the critical pressure-temperature balance of the cooling coil could be changed. If they drop too low the cooling coils surface temperature can drop below the dew point temperature of the room. At these times the cooling coil will quickly operate as a refrigerator rather than an air conditioner. Instead of 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 room air it gives us a feeling of comfort. To do this although temperature of the cooling coil should always be higher than the room’s dew point. If it’s permitted to drop below the dew point the air conditioning equipment will start to produce ice.
With this information at heart the following are a few 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 little while of the cooling season. In case a smoker do it weekly. To clean filter remove from air conditioner, 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 hot water to sink in order that filter is totally 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 would be best, but this could 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 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 at the rear of the air conditioning equipment. Its job is to dissipate the heat that is being removed from the room. Just like the cooling coil it too must be cleaned every few years. Because the condenser is externally of the home it becomes exposed to a great deal of dirt, pollen, and smog. Since airflow direction is from inside to outside it’s the inside surface of the condenser that becomes dirty. Therefore to completely clean this part the air conditioner must be completely disassembled. If not cleaned regularly an airflow blockage here may also burn up the compressor. Before this happens although lowering of airflow will affect the entire operation. This can bring about 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 may not get cold enough to shut down the cold control. It could hover just above the cut off point. When this happens the cooling coil will quickly refrigerate. air sanitizer on the cooling coil will result. If the compressor itself is at fault the air conditioner should be replaced. But remember that many icing problems are misdiagnosed as bad compressors if they were actually one of the other faults discussed in this article.
5. Not enough refrigerant. Too much refrigerant.
Both scenarios can lead to and icing condition. If your air conditioning equipment was repaired recently suspect an excessive amount of refrigerant. Blended with an airflow problem this is often 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 outside 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 bring about the cooling coil starting to produce ice. This problem is more prevalent in the fall. If it’s hot during the day but cold during the night suspect this problem as the cause of icing up. If this issue 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 attracting handful of outside air at night time.