Newbie 75 gallon

[Llorgon]

So I plugged it in again this morning, watched it top off the tank. Everything good. The siphon break works as expected. No water siphoning back.

Again 10 mins later alarm sounds. I watched a video of how to get the different alarms and what I thought was one beep is their two beeps.

So 2 beeps every 10 mins would seem to indicate the high water sensor has been covered for 10 minutes... Only problem is the water level only comes halfway up the first sensor... Could the sensors somehow been switched up?

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