Question about Heating & Cooling

1 Answer

My Trane central air contioning that services the second floor of my house is not pumping out cool air. Checked the unit outside and found ice forming on the piping that contacts to the Trane AC uni. WAs told there is probably a leak in the system. Had a leak fixed last summer, found the leak by injecting dye. Is there possibly another leak????? What is the best way to handle this situation???

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 334 Answers

Hey there, the first thing that you should do is identify the exact reason that the system is freezing up. First, let it thaw for probably a couple of hours to make sure that all the ice is off the indoor unit. If you leave the fan run (turn the fan to on on the tstat) it will help it thaw faster. After it is thawed, turn on the ac ad let it run for 2 mins or so. If the larger refrigerant line that is covered in black insulation is very cold and starting to frost up (may take a little while depending on how bad the problem is but should turn very cold quickly) this indicates you have an airflow issue. Probably a dirty fliter, coil or fan blades. The scoops in the fan can accumulate dirt and decrease efficiency. If the pipe is not cool at all, should be around 55 degrees or so, warmer if the house is hot( 80 degrees or above) then you are probably low on charge. If it is warm, make sure that the smaller refrigerant line is warm too and there is no ice or sweat on the small line in the outdoor unit. If it turns out that you have a leak, finding it is sometimes very difficult. The refrigerant carries oil with it as it travels through the lines and the oil will accumulate at the leak and collect dirt making it visible. There are electronic leak detectors that can make the process easier. A good place to look in residential systems is in the indoor coil, where the u bends are and pass through the sheet metal that holds the coil together. The last thing I do after fixing a leak is to pressurize the whole system with nitrogen to an exact pressure (the higher the pressure the quicker a leak will be evident) and make sure that the pressure remains constant. Holding for 5 or 6 hours under about 200 psi with no drop would make me feel comfortable that there are no more leaks. If you do find a leak in the indoor coil and then another pops up, it may be better to replace it at this point. Let me know what you find out or if you need anything else.
seth

Posted on Jul 18, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

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 TRANE XB-1000 model manufactured in June of 2000. It is operating while in the auto position on the thermostat but not cooling the upstairs (showing 75 degrees and very warm). I just replaced my...


If the unit is operating, then I would first check the filter and the coil behind the filter
to be sure there is no icing up. If there is icing up and the filter is clean,
you need to allow the unit to
thoroughly defrost (by shutting it off) and have a technician check and charge
the system. If you go outside while the unit is running and feel the large diameter
line, it should be "beer can" cold and sweating. If the indoor coils are clear and the line
is only cool then I would suspect low charge. Have the system checked for leaks as well.
during the service call.

May 03, 2011 | Heating & Cooling

1 Answer

I have a 20 year old Trane heat pump. Outside


Yes, you will want to put the unit into cooling mode to help assistance with the ice melt.

If you can, block off the outdoor coil or disconnect the outdoor fan motor. This will assist in raising the discharge pressure and temperature and thus, it will melt the ice quicker.


Or, if you have the capability, you can take a garden hose around to the unit hooked into hot water and melt the ice that way.




If your control board is messed up, why aren't you replacing it?

Jan 10, 2010 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

Hello We have a Trane central air


Bad thermostat, improper wiring or bad circuit board in furnace. Turn off the disconnect outside.

Dec 30, 2009 | Heating & Cooling

1 Answer

Earlier this week, I noticed that the house felt "stuffy" but the thermostat showed everything to be cooling as expected. Last night, the house was definitely warmer than expected when we got home. My...


nope, nope, sounds like a stuck contactor in the electrical compartment of the condenser, but there are actually several things that could cause it.

Sep 30, 2009 | Heating & Cooling

1 Answer

Earlier this week, I noticed that the house felt "stuffy" but the thermostat showed everything to be cooling as expected. Last night, the house was definitely warmer than expected when we got home. My...


If both fans runs (inside and outside), check if the compresor runs , if does probably the unit is low in freon and needs to be recharged after the freon leak has been fixed (remember this is a seal system and it shouldn't leak), but if the compressor doesn't work , it could be the capacitor , the pressure switch (if it's low on freon ) or the compreessor itself.But befor do anything ,if you have a digital thermostat replce the batteries.

Sep 30, 2009 | Ruud UBHC Air Conditioner

1 Answer

Central air running all day and not cooling very well


Condensation by the compressor is okay, but if you see it icing up thats reason for concern. The indoor coils can freeze up if there is not enough air flow. Make sure most if not all the registers are open. Take tempature readings at the return and at a supply vent. There should be a 20-28 degree difference. If the difference is only in the teens you have a functional problem. Be sure to shade direct sunlight. And if it gets below 65 degrees at night be aware that if the A\C runs through the night it may block up with ice in the evaporative area. If outside temp reaches 100 degrees unit will run all day. Good luck

Jul 13, 2009 | Heating & Cooling

1 Answer

My rooftop Trane A/C unit shows high humidity on the thermostat, will not cool the house during the day but cools fine at night. What could the problem be? Also, how can I lower the humidity in the house?


High humidity causes Icing of the cooling coils. Avoid constant running of the a/c. Meaning let the AC pull the house dow 2 - 3 degrees at a time.. The unit shutting off will allow the ice to melt. Make sure the drain is clear by going outside and chkg for drainage. Once the house is reasonably dehumidified the ac can be set and left on its own.

Jul 06, 2009 | DeLonghi Trane 5t Rooftop Air Conditioner...

1 Answer

My Trane air conditioner is not blowing cold air


there could be a few things low on freon will cause the coil to ice up and no air can get through,breaker or switch to the blower unit in the house is off belt broke or the moter let go

Jul 05, 2009 | Ruud Central System Air Conditioner

1 Answer

TRANE 1984 Home A/C Where are How to Clean Coils inside House


the best thing to do it with airhandler shut down at breaker. 1st soften dirt and crud with 409 or different brand. 2nd take a wire brush and clean in up and down motion following the fins on coil.3rd rinse with spray bottle . this is the best you can do without coil removal.

Jul 02, 2009 | Heating & Cooling

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

31 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

paulcarew

Level 3 Expert

2463 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Donni Steen

Level 3 Expert

659 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...