Air Conditioner FL Error Code: Water Tank Full on Portable AC

FL on a portable air conditioner means the internal water collection tank is full and must be emptied. FL is used by GE, Frigidaire, and several other brands. The portable AC dehumidifies room air as part of the cooling process. Some models are self-evaporating (they evaporate condensate through the exhaust hose), but in high humidity, they produce more water than they can evaporate and the tank fills. Drain the tank through the rear/bottom drain plug into a pan. Some models have a continuous drain option: connect a garden hose to the rear drain port and route to a floor drain. If FL appears immediately after draining, the float switch may be stuck in the UP position. Shake the unit gently to free the float.