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Hello, My condensing unit (LG-LMU245HV) and my wall unit (LG-LMN185HV) are brand new and were installed just one month ago. Everything has been running fine but now all of a sudden now the air coming out of the wall unit is no longer cold. Oddly, the copper pipe (that connects the outdoor condensing unit to the wall unit) is cold, and even has ice forming on it, but the air coming out of the wall unit NOT cold.

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Need to relocate my condenser about 3 feet from the slab it's on. any easy way to do this. any isolation valves etc?

Posted on May 06, 2012

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Hi, when the copper lines at the condensing unit, the larger of the 2- start to form ice, you have a freon leak. The unit is new, so I would expect the leak to be at one of the welded/brazed joints. What will happen, is the indoor unit, the evaporator coil will start to ice over and block off all air flow through through the coil. I hate to tell you this, you will need to call the installer out to do a leak check on the unit. They will then need to pump it down, braze the leak with sil-phos, or silver solder and recharge the unit. This is the problem, I see this a lot on new units. Someone forgot to do a leak check on it. Being only a month old, it has to have a warranty on it, shouldn't cost you a dime, but this is the problem, indeed!! Please keep me updated on this and get them out there. It will never cool until they fix the leak and recharge it. Please don't forget to rate me on this, I know you will be kind. Keep me posted and you can contact me by my user name below. Thank you Zeke! You still have freon in the unit, just low enough to start the suction line outside to start to ice and loose your cooling.
A/C, Heating, & Refrigeration Contractor

Posted on Aug 06, 2010


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