Quote:
Originally Posted by retiredguy123
I don't agree. The leak could be at the back of the drain pan or above the bottom surface so that it only leaks when the drain pipe is clogged. In any event, testing the float switch is definitely more definitive if water is used to trip the float switch rather than doing it manually, with no water.
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I hear what you are saying but I've never seen the drain pan leak like you ar saying, not that it can't happen. Maybe it's that vinegar and or bleach some use that eats away at the pan and causes it to leak?
Most of the time when a neighbor calls, it's always the condensate line clogged and the unit either turned off including the blank screen on the thermostat, or the leak sensor failed and there is water everywhere and the lower plenum needs to be pumped out.
But if you feel you need to test the system like you say, knock yourself out. Most are not going to do that.