Question about LG Art Cool LA121HNP Split System Air Conditioner

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Displaying "Co" code, and running when turned off with the remote

We also have the LG Art cool. It is displaying the code" Co", which i haven't seen before. We too have had the "C6" code before. Although the unit is turned off at the remote, it is still running with the "Co" code on the unit display

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  • janinehunsto Mar 05, 2009

    Thanks!  It has been fine since i posted....just turned it off at the fuse box; but if it happens again, i will get it checked :)

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It sounds like you have lost communication between the indoor and outdoor units. This can be one of two things. Either the connection indoor or outdoor is loose or bad, or a rat may have eaten the cable in cieling.

Posted on Mar 05, 2009

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I may not be of much help but I may be able to guide you into some diagnosos. If there is a communication problem between the inside and outside unit, both on the inside and outside units a colored LED will bling 5 times then pause for 3 seconds. The 33 and 44 codes are confusing to me because I have never seen this. Try resetting the outside unit with no call for heat or cool from the inside unit. After about 20 seconds, restore power to the outside unit. Go in and turn on the remote and make sure you lower the cool setting more than degrees cooler than the room temp. After 3 minutes the outside unit should turn on. If you get an error code of either 1, 2 or 5 blinks document it for the technician. If you continue to get your 33 and 44, you have a bad control board. If all else fails, press and hold the button located on the lower left side of the art unit and hold for about 5 seconds. If it still no longer works, now you will need the help of someone who knows these units.

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