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Old 06/10/2020, 07:19 PM   #3
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Join Date: Dec 2007
Location: San Carlos
Posts: 559
In theory it should work, provided it doesn't take longer than a minute to fill your return chamber to the correct level. Other wise it will run for a minute, then shut off the whole ATO, it won't run again until you turn it back to "Auto" So there is no harm in having it set to 5 minutes if it doesn't need to run that long. That's the failsafe to flooding or running the pump dry. If you leave the default programming, it doesn't fill to the "high" sensor. Only the "low" one is used. High is the failsafe to shut it off if the low one fails.

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