Problem Checkpoint SolutionCool/Warm air does not come out.Check if the product is turned on rightafter Cool mode operation is stopped.Cool air does not come out right afterthe product is turned on to protectthe compressor of the outdoor unit.Please wait for 3 minutes.Therefore, do not worry about theproduct malfunction for this.Check if the product is operating inHeat mode.Warm air does not come out rightafter the product is turned on to avoidcold air coming out. Please wait fora while.Therefore, do not worry about theproduct malfunction for this.Check if the pipe length is too long.When the pipe length is exceedsmaximum allowable pipe length,effectiveness of cooling/heating maydecrease.Off timer does not work.Check if the product is turned off. Set Off timer after turning on theproduct.Check if the Off timer is already set. Please check timer indicator on theindoor unit display.Buttons on control panel does not work. Check if button lock function is set.Press and hold and for 3seconds. Button lock function will becancelled.Strange odor is generated.Check if you are using the product in aplace with smoke or other odor.Please ventilate the indoor area. If theodor is bad, operate in Fan mode for3~4 hours. air conditioner does notuse smelly parts.Check if the air filter is dirty. Clean the air filter.ENGLISH-2503 OTHERS