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Old 01-21-2016, 11:24 PM   #1
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Join Date: May 2012
Location: Texas
Posts: 630
Need some help with Black Tank Sensors

This is not the standard issue with the sensors reading full all the time. In 2013 replaced our sensors with the Horst Miracle Probes and they have been working great always accurate, This last time dumped and flushed our black tank and now they will not read the 2/3 or full. It will read the 1/3 level and have looked at the wires at the tank and they are still connected. We have not moved or anything, so was wondering if the sensors go bad?
Also once it warms up I plane on gaining access and removing the wires and see if I connect to the 1/3 if they will read. Ordered a new set of probes just in case (40 bucks)
All other tank sensors are reading correct. If any knows the wiring from the tank to the panel would be greatly appreciated. Just trying to gather information before I tear into it. I posted in another section and only received 1 response. Thanks in Advance...

Andrew & Donna Reyes
2012 Georgetown 378XL
2015 Ford Taurus
Our Baby Dachshund
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Old 01-22-2016, 12:27 AM   #2
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Join Date: Feb 2013
Location: Pfafftown NC
Posts: 2,223
I think you are on the right track. Using some clip leads, jump the 2/3 and then the full sensors to the 1/3 sensor. If both those lights come on when you push the test button then you can rule out everything except the sensors. I have Horst sensors but only for 2 seasons. Never read anything about the,m going bad but I guess it could happen.

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Old 01-23-2016, 01:56 PM   #3
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Join Date: Nov 2010
Location: Bronston, KY
Posts: 708
Hmmm. How did you gain access to the black tank. Mine is all covered with foam.


Life is a journey, not a destination.
2005 Georgetown 359ts
Bill & Virginia, Kentucky
Nights camped in 2011...78 , 2012...73,
Nights camped in 2013...123, 2014 ...101
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black, black tank, tank

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