Under its own and other brand names, LG produces a variety of window, wall, and portable air conditioners, including Hampton Bay. Many of the issues that plague LG air conditioners may also be seen in other models.   While a competent do-it-yourselfer may diagnose and repair some of these issues, some fixes may need the services of trained specialists.   Repairing a window unit may not be as cost-effective as replacing it after factoring in labor and material expenses, particularly if your unit is out of warranty or has beyond its 10-year life expectancy.   Steps to fix Lg Ac: Step1: Set the temperature to cool Make sure the device is set to Cool, then lower the temperature to the lowest setting, which on most LG models with a digital display is 60 degrees Fahrenheit.   Step 2: Change the fan's speed Increase the fan speed to its highest level.   Step3: Check for Cold Air Check for cold air; if it isn't blowing, a refrigerant recharge by a qualified expert may be required.   The Remote Control Isn't Working: Check the remote's batteries. They may simply need to be changed, or they may have been fitted incorrectly. Check that the battery connections are clean and that the batteries are securely fastened to ensure a good connection.   If the remote still doesn't function, clean both the remote and the unit's sensor panels. It's also possible that the remote isn't working because the distance or angle from the device is too great.   A nonworking remote may also be caused by a faulty circuit board in the remote or device; however, if this is the case, the remote will need to be replaced or repaired.   The settings and troubleshooting techniques for each LG air conditioner model may change somewhat. If you don't have the user manual, go to the LG support site and enter your model number.