Product Features 24Volt AC sensor Industry leading Magnetic float switch for metal
May 21, 2014. Benefits of a Safety Float Switch on Air Conditioner Systems Air conditioners were built to remove heat from air within an indoor space.
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If the air handler’s float switch has tripped, the primary condensate drain has stopped up due to a blockage, and the blocked water has tripped the float on the float switch. Most of the time an algae growth is the culprit blocking the drain. However, small lizards or frogs occasionally become lodged in the pipe stopping the flow of the water.
A float switch is essentaially an electronic water sensor for your HVAC system. What it does it gives your AC system the ability to detect if it has a clogged drain, and if the switch detects a clogged drain scenario, it immediately shuts the system off.
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Locate the float switch and verify it is mounted in the drain pan. Typically, the switch is located on the same side as the air handler's access doors and is attached to the side of the pan. The switch can become dislodged if accidentally bumped.
The condensate switch for an AC or heat pump is normally closed and opens the circuit when the water level is too high which shuts of the AC or heat pump. The one needed for a pump to drain the dehumidifier needs to be normally open and closes the circuit when the water level is high enough to need pumped out which turns on the pump.