Drain Pan Overflow

The drain-pan overflow sensor uses a float to detect when the drain-pan water level is too high and automatically turns off the flow of refrigeration to the coil and the fan to prevent additional condensate water. Residents receive an alert on the thermostat screen.

A build-up of dirt and debris can cause the drain pan spigot to clog, and if it’s clogged the condensate water builds up in the drain pan. Water will continue to rise and may eventually overflow into the vertical fan coil cabinet and living space.