Best I can tell when you are setting the water level all you are doing is setting the time the solenoid is open.
I have mine set for about 1/4" above using the onboard pump. That way I have the minimum water usage when not on a sewer hookup. I'll either use the water pump or regulate the park pressure down to about the pumps output.
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Thanks,
Duane
2019 DRV MS 39DBRS3 ---> Flexible Flyer
2020 F-450
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