Question about Carrier 52PQ307 Wall/Window Air Conditioner

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I have an Air-con

The heating system is not working, it blows cool air, and the outside unit is building ice around its bottom. Can you help me solve this problem?

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  • Expert
  • 90 Answers

There is not enough refrigerant on your a/c

Posted on Dec 02, 2013

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Posted on Jan 02, 2017

machtcl1
  • 61 Answers

SOURCE: Only blows hot air inside

Set thr thermostat to AC instead of HEAT.

Posted on Jan 02, 2009

  • 30 Answers

SOURCE: panasonic air con unit is not blowing cold air out.

This unit is use in motels etc. Check the ouside coil ( conderser) from the inside (discharge fan ) for dirt. Most of these units are floor level . This can cause a unit to short cycle ( cold air is at the floor) .

Posted on Jul 18, 2009

wise_jf
  • 66 Answers

SOURCE: wiring diagram needed for carrier air con unit

Here ya go:
http://www.xpedio.carrier.com/idc/groups/public/documents/techlit/38ckc-c2w.pdf

Posted on Jun 30, 2010

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Brand New 2 weeks old 4 ton Trane compressor leaks a lot of water onto pad


If the unit is running in cold weather than there is ice building up on the coils located outside. This is normal in that the unit is running in heat pump mode heating inside and cooling outside, After the unit detects the ice build up it briefly reverses the cycle heating the outside coils melting(defrosting) the ice which you observe as water on the pad.

The video gives you an example of the defrost cycle!
2012 Trane XL15i Heat Pump Defrost Cycle Steam Show

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I have an Air-con air conditioner and heating system


Check your filter, if it's clean check the condensate drain to be sure it's draining if ok your system has a leak and will need an ac tech to repair and recharge the system

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My outside toshiba split system is leaking a lot of water


If the unit is on heat mode, the outside unit is the "cold" end... Sometimes if the ambient air temperature is very cold ( Under 5 degrees C), the outdoor unit can start to ice up. If it ices up too much, the air con will automatically go on to a defrost cycle where the outdoor unit will heat up and melt the ice. Water is then drained out the bottom.. its the opposite of what happens in the summer when the indoor unit has water running out of the drain hose. Especially on humid days..

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My heat pump is frozen up today and it is 60 degrees outside and I have my heat set to 66 degrees. Is this normal?


You post is not clear as to where the freeze-up is occurring. I'm going to assume the outdoor unit is frozen up.
Heat Pumps don't generally freeze up at 60 degrees. If the ice around the unit has an uneven pattern (for example a thick spot around the center or at the very bottom) could indicate a low refrigerant charge. If the ice is even throughout, it may be one of the following:
*Sticking Contactor*.....turn the system off at your thermostat and check to make sure the unit outside shut off. If it doesn't turn off, it is likely to be the contactor.
*Failed Defrost Thermostat*.....if the defrost thermostat fails "open", the system will never go into defrost.
*Failed Defrost Control Board*......this could also prevent the system from going into defrost
*Failed Reversing Valve*........put your system in COOL mode and check to see if it will blow cold air inside approx 16 - 22 degF lower than room temperature.
*Failed/Failing Condensor Fan Motor*.......ensure the condenser fan motor is running during heat and cool modes. The condensor fan motor will not run in OFF/Satisfied Mode or in Defrost Mode.
I hope this helps. Good Luck! :-)

Mar 05, 2010 | Heating & Cooling

1 Answer

The fan is not turning on my outside air unit but it is still blowing hot air through the vents. There is also ice build up at the bottom of the unit. It is making a humming sound.


You will need to replace the outside fan,or condenser fan motor.
Shut unit down,before the compressor gets damaged.

Without the condensor fan the heat will not be blown to the outside air and the unit will not cool.

You may be low on freon too,have it checked.

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Outside unit iced up how do de-ice


As with the simplest way to thaw ice is with heat.

If you are running this unit in cooling and have ice outside, then you most likely have a freeze up inside as well. If this is a heat pump unit, then frost is normal during operation, however, ice build-up is an indication of a problem.

There are 2 effective ways to remove the ice build-up. The first is the simplest. Get your water hose and hose it down. Be sure to turn off the breakers to the unit and avoid spraying the electrical compartment. If you have the ability to hook the hose into a hot water line, then this process with be extremely fast. Let the unit sit for about 20 minutes to dry out and turn it back on.


The second can be a little more complicated if your not tech savoy. You can turn the system on in the cooling mode. This will make the outdoor coil the condenser section. Then, either block the airflow through the coils with an object, put an object over the fan to increase pressure, or if you can, disconnect the fan so it does not run. This method is essentially the same as a defrost cycle.

As with any failure, you can fix the problem at hand, but it will return. After you get past this, your real challenge will be determining what caused the freeze-up.


If you were running your system in cooling already, then you will need to ensure the system has de-iced on the inside as well.

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18 year old Janitrol Heat Pump freezing up.


i would get someone to check your refrigerant levels have you ever had the evaporator coil flushed and cleaned? proper refrigerant levels and proper airflow across coils are extremley important not to scare you but 18 yrs is a long time on a heat pump 9-12 years is the point where they really loose there efficiency going for a newer one would probably cut your operating cost in half if not more depending where you live there are a lot of people not familiar with heat pumps so i suggest finding a company that specializes in them to service your unit

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UNIT NOT BLOWING WARM AIR-OR REACHING DESIRED TEMP


I assume this is a heat pump. The outside unit may be icing up. It should have a defrost cycle with electronic control that sometimes fails or sensor associated with the electronic determination of when to defrost may have failed or may not be sensing because its out of position. You can check for a defrost problem. If frost is blocking the outside unit air will not pass through it after the frost builds up and you may be able to see the white frost as well. If all this is true you need to get a service manual and use its procedures to find out why the unit is not defrosting.

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Sounds like you have it in heating mode or it is low on charge. In cooling mode, the outside fan should blow hot air not cold.

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