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Old 01-31-2012, 01:37 AM   #1
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I have a 2011 Crossroads 21FD and the control panel tells me the black tank is 1/3 full when it's empty, so I can't trust the reading at any level. Does anyone know how to fix/repair this issue?





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Old 01-31-2012, 02:00 AM   #2
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Our black tank has shown 1/3 full for the last two years even empty. I have tried everything I can short of pulling the tank (which I will not do) and nothing works to clear it. I pretty much just dump it every couple of days rather it needs it or not.
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Old 01-31-2012, 02:11 AM   #3
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Invest in a long tank sprayer. Ours read FULL all the time until the final cleaning at the end of the season - it now reads EMPTY. Look at your tank if you can so you know where sensors are and you can aim to spray them directly!
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Old 01-31-2012, 02:14 AM   #4
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I remember reading some place about replacing your present sensors with something else. Maybe it's an electronic gismo. In fact I think I posted on it and Larry D. replied and said when he started having trouble with his, he would probably go with that.
Maybe he will catch this and chime in.




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Old 01-31-2012, 02:27 AM   #5
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The SeeLevel units work very well. This may be what we install on our next unit.



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Old 01-31-2012, 06:03 AM   #6
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Mine reads the same and fill at a normal rate as I think it should except when it reads full I have another day left if I am at someplace without sewer hook ups. It seems like a common problem.



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Old 01-31-2012, 06:10 AM   #7
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I pretty much have stopped looking at those levels. It IS somewhat accurate at the full level but not much else. I won a set of Horst Miracle Probes that are sitting in the RV unused. These are "supposed" to be very accurate and clog free. A dealer wanted $300 to install the probes to which a prompt "NO THANKS!" was spoken.
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Old 01-31-2012, 06:18 AM   #8
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Art, bring them to the rally. Steve Ford is our resident plumber.
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Old 01-31-2012, 07:08 AM   #9
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FWIW, when my gauge reads anything other than empty when I know it is, I fill it a 1/3 full with water and a bag or 2 of ice cubes. Then head out on the road. Sometimes, some 'stuff' gets stuck on the sensors--the ice will knock it off. It may solve your problem for now....
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Old 01-31-2012, 12:44 PM   #10
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Matt is right. I too have used the bags of ice trick & it cleared up my sensors & cleaned out the tank, while traveling to the next camp spot. Keith I'll be ready for your next leak, ol' Rally Master.Edited by: FFFord
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