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A/c compressor keeps over heating on the outside unit 4 ton

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Posted on Aug 27, 2010

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Posted on Jan 02, 2017

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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

Dec 21, 2015 | Heating & Cooling

1 Answer

I have a Carrier Weathermaker model #38tdb060300 A/C system. How many tons is that? It is 11 yrs old, capacitor exploded and compressor is blown. Needing to replace.


Looks like a 5 ton unit. However, you might be better off finding a R-22 condensing unit to replace the entire outside unit. Reason being, if you just replace the compressor, you get a one year warranty. If you replace the whole outside unit, you get a 5 year warranty. You can replace the outside unit with any manufacturer, as long as it is the same tonnage and type (heat pump/air conditioner/single stage/ 2 stage ...).

Oct 13, 2014 | Heating & Cooling

1 Answer

4 ton Amana -heat comes on sporadic in spring and fall (Every season change) Heat worked through 20 degree weather. Thermostat at 74. Today is 100% humidity and 52 degrees outside and heat won't work. By...


Assuming this is a heat pump I'm guessing you have a bad temp sensor. Your outdoor fan is likely controlled by a temp sensor so it only runs as needed during heating. Fan not coming on and compressor still needs cooled therefore compressor protection kicking in?????

Aug 12, 2017 | Amana Heating & Cooling

1 Answer

Air conditioner blowing warm inside and cold outside


it's a heat pump in the heat position . Check the thermostat to see if it's in the heat position. If not then the changeover valve on the unit is stuck.

Feb 08, 2013 | Carrier Payne 2.5 Ton Air Conditioner...

2 Answers

I have a Rheem heat pump/air handler; it draws 2.9amps with only the fan running, 13amps when the heat pump is running and 38amps with the heat strips on. My question is why the unit draws that many amps...


Sounds like it must be about a 2.5- 3 ton system. The 13amps has to be the compressor draw -normal. and 38 on the strips- normal. 2.9 fan -normal.

You may want to check your wiring to see where the outside unit gets its power. Theres nothing inside that can draw 13 amps. That almost has to be the compressor power wire.

Jan 27, 2011 | Heating & Cooling

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We installed a new TCJD36 (3 TON) unit with new A coil. The unit works fine from morning until 4:30 PM. from 4:30 PM to 9:00 PM the compressor does not come on. Inside fan goes on and outside unit fan...


This really sounds like the unit is over heating the compressor to the point of triping the internal high limit switch and just taking that long to cool off before it resets. If it continues to do this go outside and run your water hose over the compressor for at least 30 minutes to cool the compressor down and see if it starts for you then. If so then your unit could be over charged and creating very high head pressures!

Aug 11, 2010 | Goodman CLQ36AR49 Air Conditioner

1 Answer

My weatherking outside compressor isn't big enough to handle my cooling needs. It is 1.5 ton unit, can I put a bigger ac unit onto this one without changing my heating system which is sufficient?


if your indoor unit is 1.5 ton the answer is no
if your indoor unit is 2.0 ton then you can jump to that size.
Note :your duct system may have been designed for a 1.5 ton and may need to be reconfigured for a size increase.
Your hvac contractor should know this?

Jun 14, 2010 | Weather King 10AJA4201AH Air Conditioner

1 Answer

Compressor size


Square footage is how you determine what size of an AC you need, say two bedroom house with 1500 square feet would require a 3 ton unit but I would go to a 4 or 5 ton depending on brand and what you may do in the future, Like adding a bedroom or bathroom and how many people will be living in the house, a heat pump normally last longer the bigger it is and is more efficient than a smaller size. Just think like this, a 3 ton will run 30 minutes to an hour longer to cool the same space as a 5 ton so if the five ton does it 30 minutes faster it will not run as long. And when it has to pull down the temperature again it will do it much faster. So less run time means faster heat or cooling and less energy is used. I have found that the bigger units are made better and last longer as a general rule. And to understand the 3-ton and 5 ton let me say that it means how long it takes 3 tons of ice to bring the temperature down 10 degrees, the old BTU’s British thermal units. However the bigger the unit the more well built it is normally and the less maintenance required. 5 tons of ice would get it cooler faster. But one thing to keep in mind a heat pump is only good for 20 degrees temperature range, for instance if the high range is 80 then the low side would be 60 in order for it to be efficient so if you have it set in the house at 72 degrees on the high side and low side would be 52 degrees. But the larger the unit the less time it would take it to recover from the heat differential.

Jul 22, 2009 | Ruud UAKA042 Air Conditioner

1 Answer

I entered questions for the split Goodman HVAC system yesterday. Two people responded. In response to taa43-Tom, I will get more local opinions & quotes tomorrow. Do you live in the Southeast? ...


Better off taking good money and put into something with a warranty. its probably a 4 hour job to recover solder in new valve change drier pull vacuum recharge If your system is freezing up it may not be the valve could be a check valve. low freon dirty unit all would cause the unit to freeze up is the company competent in working on heat pumps don't get some body that can work on you want in FIXED . from what you said in your 2nd post i am not convinced its the valve. Tom p.s i am in the mid west prices are not too far out of line.

Jun 24, 2009 | Goodman CLQ36AR49 Air Conditioner

1 Answer

How far from the house should the outside unit be located?


If your outdoor fan is a vertical discharge in other words if the fan blows the air up from the top of the unit then one foot from house is fine, but if it is horizontal discharge or blows it out the side then the airflow needs to be directed away from the house or the unit needs to be moved away from the house far enough that it doesn’t restrict the airflow.
For the blower running on high speed a 4 ton unit is usually 1600 cfm so on low cfm it may seem like high speed. There should be some speed taps on the indoor pc board and if you look in your installation guide it should tell you what taps you need to get the lower airflow if its not correct.
For the luke warm air in the 2 ton mode, the coil is a still 4 tons but the compressor now is only pumping 2 tons of refrigerant so the discharge temperature and head pressure will be much lower and that is what determines how much heat you get, so you will get less heat. The 2 ton mode is for times when you only need a little heat or cool, when you need more then you will get the 2nd stage which is the full 4 tons of heat.

Apr 21, 2009 | Heating & Cooling

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