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Old 01-26-2020, 01:23 PM   #1
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Tucson , Arizona
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Black Tank Sensor Location 2015 19' International

The Seelevel black tank sensor on our 2015 19' International Serenity is showing an open circuit error - possibly a loose connector at the sensor. It sounds like an easy fix, but I am unable to find any manual showing the location of the black tank sensor and how to access it.



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Old 01-30-2020, 03:50 PM   #2
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Tucson , Arizona
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With no responses on the forum, I tracked it down myself with the help of a borescope. The black tank is underneath the toilet and you can access one corner of it under the aluminum cover next to the toilet over the vent pipe. The Seelevel sensor is attached to the front wall of the black tank, pretty much in line with the toilet. The two wires from the sensor pad are joined with wire nuts above the tank and the wires continue into a harness.

All my wires looked secure, Although it's a bit tight to get fingers in this space. Replacement of the black tank sensor looks just possible with the removal of the toilet and its support, but again space is tight. Not an item designed for easy maintenance, I'm afraid!


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Old 01-31-2020, 08:15 AM   #3
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2006 23' Safari SE
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Ours has the old Micropulse system and the sensor is on the outside of the black tank pipe near the pull lever. It's easy to get to and replace. Ours quit working and the telephone jack connector in the sensor had a corroded pin broken off. Replacement price is around $60 for the sensor. Still, just as easy to look down the toilet to see the tank level so I've not been in a hurry to replace it.

Rich & Yvonne
2006 Safari SE -Dora-
2004 4Runner SE

Most of us don't know exactly what we want, but we're pretty sure we don't have it. -Alfred E. Neuman
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