Gault suggests checking the drain pan. “Your AC might not be turning on due to water buildup in the drain pan. Make sure to empty the drain pan and clear the drain lineclogs in the drain line ...

An air conditioner removes moisture from the air and condenses it into water. So, it is normal for all types of air conditioners to leak some water, either outside or into a drain tank or pan.

Ice forming on a drain line or around the evaporator drain pan is most often caused by a cracked or plugged drain line or a defective drain or pan heater. Again, the location of the ice may be the key ...