Like a culvert the condensate drain line is normally mostly empty with a small amount of water flowing in the lower parts of the horizontal run.
Reset condensate overflow safety switch.
And yet we still install a float switch inside the drain line it s like a second line of defense.
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Most of the time an algae growth is the culprit blocking the drain.
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Condensate switches traps home.
The float switch a safety device that shuts the system down when condensation overflows into the drain pan can fail for a number of reasons according to smith.
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Reset simply by drying the absorbent pad with a paper towel and pressing the reset switch.
It s very common for a stopped up drain to trigger this device and results.
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One or two drops will cause wet switch to turn off a unit alerting a serviceman to a moisture problem.
However small lizards or frogs occasionally become lodged in the pipe stopping the flow of the water.
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Turns system off when detecting moisture due to condensate or drain leaks.
Water dripping through the ceiling and an air handler sitting in a drain pan full of water directly above it is more common than you think says christian smith an hvac contractor.
A lit led indicates the wet switch is activated and has turned the unit off.
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The wet switch keeps that from happening.
With a standard pan float switch installation a lot of water can leak out before the float switch turns the system off assuming it works properly.
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This video should help you with that.
Condensate overflow cut off switch.
Primary drain pan or clipped to coil above primary drain pan.
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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.
The pipe must be full or near full to activate the switch.