What Is an Air Conditioner Drain Alert?

What Is an Air Conditioner Drain Alert?

The drain alert on an air conditioning unit indicates that water, formed as condensate on the units' evaporator coil and collected in a pan, isn't leaving the unit the way it should be. This feature can be used to monitor water levels in the unit and to avoid overflow.

Unplug the unit to check for a clogged drain tube or a full drain pan. Install a continuously draining room air conditioner with a slight downward slope by slanting it forward in the window to facilitate exterior drainage. Clear the plastic drain tube using a soft brush to remove condensate build up and obstructions. Allow the air conditioning unit to dry completely before turning it back on.