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Old 09-30-2016, 11:48 AM   #11
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Originally Posted by Uncle Wayne View Post
I've got my 34RSBS parked as I am living in it full time while working on a nuclear power plant in Georgia. My black water holding tank is giving me fictitious readings. I drained it yesterday when I saw three dots. (Got not much more than a trickle.) Afterwards I checked and saw four dots. I do have the flush system and use it every time I drain. Can anyone shed some light on how to either clean the sensors on a stationary set-up or replacing the sensors. Thank you in advance for your comments.
Are you sure you don't have a clog? If you open the valve and just get a trickle you could have a blockage.
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Old 09-30-2016, 01:49 PM   #12
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Originally Posted by jloco View Post
I've been pretty lucky in that my BWT sensor has been accurate so far. After dumping, I always add a BWT tank agent and put at least 3 to 4 full toilet bowls of water down there. Against Jayco's recommendation, after dumping, I'll also run the flush with the valve closed for a few minutes partially filling the tank, then dump. I repeat this a few times.
I also never dump a partially full tank. I always wait until its full. I'll top it off by running the toilet if necessary if I want to dump.
I do the same thing! Seems to keep BWT clean and have not had any issues so far.
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Old 09-30-2016, 02:25 PM   #13
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Originally Posted by jloco View Post
I've been pretty lucky in that my BWT sensor has been accurate so far. After dumping, I always add a BWT tank agent and put at least 3 to 4 full toilet bowls of water down there. Against Jayco's recommendation, after dumping, I'll also run the flush with the valve closed for a few minutes partially filling the tank, then dump. I repeat this a few times.
I also never dump a partially full tank. I always wait until its full. I'll top it off by running the toilet if necessary if I want to dump.
We do the same thing ... just minus the BWT tank agent. Except for our BWT sensors, those steps have worked well for us.

We do dump some gray water into the toilet from time to time when washing large pots, but maybe that's not enough. Next season I'll start using a BWT agent and see how that works for us.
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Old 09-30-2016, 03:48 PM   #14
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Originally Posted by Vaquero View Post
Also, try holding the button for a bit longer.
Seems like the false reading will clear after 5 seconds or so. Sometimes.
Holding the button has worked for us as well. Also, get a 5 gallon bucket and put around 4 gallons in it and dump it straight down the toilet with the valve open of course. Sometimes the splashing will clean the sensors.
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Old 09-30-2016, 05:32 PM   #15
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Originally Posted by schiguy View Post
Usually the issue a bit of tissue. Sometimes particles get caught on the sensors and show a false reading. Do you have a black tank flush system on your unit? Usually they are pretty good at cleaning "particles" off of the sensors. A "wand" flusher that you stick down the commode hole works pretty good as well.
X2

Ours would read 2/3 full all the time unless it was reading full. We have the black tank flush and would flush with the black valve closed to let it get a good amount of water in it. We always had one of us inside keeping an eye on level and the other at the faucet handle to turn the water off quickly. After doing the flush 3 or 4 times it still read 2/3's full. So, we bought a wand from Wally world and used it once. The tank read empty! Voila. So now we skip the black tank flush and go right for the wand. FWIW, we carry a green garden hose for this chore so we don't contaminate our fresh water hose.
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