Question about GE Quiet-Aire Ductless Split System Air Conditioner AS1CD12AA0/AS0CD12AA0

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Coils freezing up!

The refrigerants is related to a system preassure and temperature relationship! If too low preassures the refrigerant cools too low.. If just right it will stay above freezing temperatures ((32*)) If too high of a preassure, or too much refrigerants ,the temperatures will stay too high and not cool down the return air at manufacture specs. and not remove the designed btu's and humidity... ....(bottom line, just check out a reputable hvac serviceman.) Oh yes, also low air flow across the indoor coils!

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Outdoor coils dirty creats high head pressure which in turn destroys a hermetic compressor for the fact that a hermetic compressor uses Superheated vapor to cool windings..Your post is so vague but for the fact you advise a service tech...

Posted on Jun 12, 2008

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Posted on Jan 02, 2017

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A copper thin tube from the unit is very hot. Is it normal?


Yes, well somewhat normal. The refrigerant leaves the compressor at high temperature and flows through the condenser coil where it cools about 20 degrees warmer than the outside air flowing through the condenser. Many small air conditioner units use a small copper tube (capillary tube) of a specific diameter and length for that system to cause a decrease in refrigerant pressure between the condenser and the evaporator. The refrigerant leaves the compressor as a gas at high pressure, cools in the condenser and changes into a liquid. The liquid flows through the cap tube and cools more as the pressure decreases and gets closer to the evaporator. The refrigerant boils and evaporates under the low pressure of the evaporator and turns back into a gas. That gas is pulled back to the compressor.
If the condenser is not cooling the refrigerant enough, the tube can become extra hot. Efficiency is reduced. Actual temperatures throughout the system depend on the type refrigerant used, suction and discharge pressure at the compressor, outside and inside temperature. Tables, charts and graphs for various pressure-temperature relationships can be found in refrigeration books and chemical web sites.

Mar 17, 2015 | Carrier FB4ANF060 HVAC Electric Unit & AC...

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Why does my A/C blow little to no air, that's not cold, and how do I fix it?


Air Conditioner freeze ups cause an A/C to blow little to no air through the vents, and the air is usually warm.

There are three basic reasons for air conditioner freeze ups:
  1. Insufficient air flow
  2. Low Refrigerant charge
  3. Outdoor temperature
1) The two most common causes of insufficient air flow are dirty filters and under sized ducts. A dirty filter limits air flow which in turn allows the cooling coil’s temperature to drop below freezing. Replacing the filter, monthly, usually alleviates this problem. Under sized ducts will also cause the system to freeze because it also limits the amount of air flowing over the cooling coil. This results in lowering the coil temperature and allowing the humidity in the air to collect on the coil and freeze.

2) Low Refrigerant Charge. The refrigerant system teeters on a delicate balance. If the system is not charged correctly, the system will not function properly. This malfunction may result in the poor cooling output and/or freezing up. Only a qualified, certified service technician can properly test and charge a refrigerant system. Check your small high pressure line (should be hot) and low pressure line (should be cold, but not frozen).

3) Outdoor temperature. If temperatures are too low, the system will not operate properly, and freeze up may occur. The outdoor unit does not function well in temperatures below 60 degrees F. A special “ambient temperature” control must be installed to allow the unit to run properly in cool temperatures, or you may open your windows and save energy. If the A/C is set lower than 70 degrees F, special adapters are required to be installed.

on Jul 10, 2010 | Heating & Cooling

2 Answers

Traulsen reach in 2 door refrigerator is freezing up . What could be the problem


This Traulsen 3 door was freezing up due to bad expansion valve.

Oct 04, 2014 | Traulsen Refrigerators

1 Answer

How do I clear the computer code PO451 Can from my truck


It is a evaporative emissions code. (evap system catches stores and eventually has the engine burn fuel vapor preassure from tank) It relates specificly to the vapor preassure sensor mounted on the evap canister.
There is either a open or short in the wiring to or the sensor itself, causing inaccurate readings, and thus throwing the code. Unless youve been in an accident, it is probably the Preassure sensor.
the canister is mounted directly above the rear dif

Feb 05, 2013 | 2008 Chevrolet Silverado 1500

1 Answer

My dash reads refrigeration low/ no ac. My mechanic added 2 pounds of freon and installed a new relay switch. The ac still will not come on and the compressor still will not turn. Please help!


the compressor may be locked up, make sure that you are getting power and ground to the plug on the comp. and if you are not then the problem may be in the high or low preassure switch, if ther is + and grount then try running a jumper wirefrom the comp. to a ground and one from the comp to the pos. side of the batt. and see if the clutch kicks in and out if it does then run the engine and run the same test and you will be able to tell very fast if the comp. locked up. more often then not it will be a preassure switch

May 13, 2011 | 1998 Cadillac DeVille

1 Answer

My Kenmore 73069's inside fins often freeze up. I don't have it set very low: 75 degrees F. Why does this happen?


Your setting of 75F doesn't affect the freezing because it is a result of the boiling point of the refrigerant in the a/c unit. The lower the refrigerant pressure is, the lower the boiling point is and the refrigerant cools the coil to that temperature also known as saturation temperature. The 75F is what it lets the room air get cooled to before it shuts off. The freezing can also be caused by low air flow across the coil which can be caused by dirty air filters, dirty fan, dirty coil or fan not running/not running fast enough. So check your filters and the coil to make sure they are clean. Make sure the evaporator fan is running. Then you may need to get the refrigerant charge checked.

Jun 15, 2010 | Kenmore 73069 Air Conditioner

1 Answer

1988 5th ave a/c recharge/low preassure bypass switch


Even if there were a switch that you could jump ,running the ac with no coolant would do less for you then rolling down the windows.Also with no refrigerant in the system you would junk the ac pump in no time,not a good idea.Take it to an authorized ac shop to get it topped up and tested for leaks or learn to live without it.

Feb 15, 2010 | 1989 Chrysler Fifth Avenue

1 Answer

My Bottom freezer refrigerator with ice maker has ice built up and a thin layer of ice covers the base under the drawer. Could the tip of the pipe that fills the ice mold have frozen creating preassure and...


there should be a drain at the bottom under drawer. I suspect that it is obstructed. When unit goes into defrost mode ice melts and refrezzes due to obstruction

Sep 29, 2009 | LG LFX25960ST Stainless Steel French Door...

1 Answer

My airconditioner lines keep freezing up


Your filter is plugged, or the refrigerant is low, or it is getting too cold outside overnight (less than 60degf)

1) The two most common causes of insufficient air flow are dirty filters and under sized ducts. A dirty filter limits air flow which in turn allows the cooling coil’s temperature to drop below freezing. Replacing the filter, monthly, usually alleviates this problem. Under sized ducts will also cause the system to freeze
Because it also limits the amount of air flowing over the cooling coil. This results in lowering the coil temperature and allowing the humidity in the air to collect on the coil and freeze.
2)Refrigerant charge. The refrigerant system teeters on a delicate balance. If the system is not charged correctly, the system will not function properly. This malfunction may result in the poor cooling output and/or freezing up. Only a qualified, certified service technician can properly test and charge a refrigerant system.
3) Outdoor temperature. If night time temperatures are too low, the system will not operate properly, and freeze up may occur. The outdoor unit does not function well in temperatures below 60 degrees F. A special “ambient temperature” control must be installed to allow the unit to run properly in cool temperatures, or you may open your windows and save energy.

Jun 05, 2009 | Heating & Cooling

1 Answer

Wall ac unit keeps freezing up inside.


No! You will not likely find any service on a product which has very little value. Frosting will sometimes happen if the outside temperature is to low. The outside ambient temperature is directly related to the pressures inside the refrigerating system. The lower the outside temperature is the lower the pressures will be in the cooling end of the air conditioner. In mechanical refrigeration pressures and temperatures are directly related.

Nov 02, 2008 | Goldstar WG5000 Air Conditioner

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