dfdouglas Posted April 13, 2021 Share Posted April 13, 2021 On a recent camping trip the Fresh Water monitor read "OPN" indicating an open in the tank sensor wiring. This happened multiple times but then goes back to reading normal percent reading. Gray and Black tanks indicators are fine, only Fresh. I cannot find where to check the sensor on the side of the Fresh tank? How can I get access to this? Thanks, David Link to comment Share on other sites More sharing options...
Frank C Posted April 13, 2021 Share Posted April 13, 2021 (edited) The fresh water tank can be seen if you lift the access hatch closest to the stove under the curbside bed. The fresh tank is the translucent low flat tank. Part of the gray water tank can also be seen there. The level sensor is a small green circuit board mounted on the end of the fresh tank facing the back end of the trailer. Just happened to have mine open for de winterizing. Edited April 14, 2021 by FrankC 1 1 Link to comment Share on other sites More sharing options...
AndrewK Posted April 13, 2021 Share Posted April 13, 2021 (edited) David, To confirm the wiring is good to the sender on the side of the tank, press the water button on the SeeLevel monitor twice so it shows a continues readout. Then short across the two leads, on the top of the sender with any metal object. If the monitor reads a short "sht", you know the wiring to the sender is good and the sender needs replaced. Contact Gabe Morales at Garnet. gmorales@garnetinstruments.com Andrew Edited April 14, 2021 by AndrewK 2 Andrew 2019 Legacy Elite II 2018 BMW x5 35d Link to comment Share on other sites More sharing options...
dfdouglas Posted April 14, 2021 Author Share Posted April 14, 2021 Thanks to AndrewK and FrankC , I'll be checking this out first thing tomorrow. David Link to comment Share on other sites More sharing options...
dfdouglas Posted April 15, 2021 Author Share Posted April 15, 2021 Conclusion... Following AndrewK's advice found the sender unit is bad so ordered a new one through RV Upgrade Store. David 3 Link to comment Share on other sites More sharing options...
AndrewK Posted April 15, 2021 Share Posted April 15, 2021 David, You my want to try Gabe. I got our replacement for free! I also had to replace the monitor panel. Also, free! I have found Garnet and Gabe great to work with. Andrew 1 Andrew 2019 Legacy Elite II 2018 BMW x5 35d Link to comment Share on other sites More sharing options...
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