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Old 06-05-2016, 03:50 PM   #1
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Darned black tank sensors!

Driving me crazy! I've got a 2015 PrimeTime 328res and the tank sensors are driving me nuts! I'm getting the phantom readings (as usual) and trying to get them to clear. I recently switched to the GEO method for tank maintenance. I'm up to about the fourth flush using softener, detergent and bleach. But the damn thing won't read any less than 3/4 full no matter what! I've flushed the tank using the built in black water flush. Any other ideas? I'm in for the season so driving around with ice cubes in the tank is out.
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Old 06-05-2016, 04:00 PM   #2
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My gray tank always seemed good but my black has always sucked! I have found a good flush after dumping did the trick. For the tough ones (let it sit for a while while dumped) a filling of clean water and letting it soak for an hour or so did the trick... Until the next time I moved or filled the tank.

I did do the Horst Miracle Probes once.. They were OK but the black tank still sucked.. I just gave up and now just wait until I can see down the black hole it is getting filled.
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Old 06-05-2016, 04:06 PM   #3
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Only have had the sensors in the current trailer, learned a long time ago about how long it takes us to fill the tanks don't worry about using the sensors.
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Old 06-05-2016, 04:06 PM   #4
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I did the old Ice cub trick and it took care of problem for awhile just have to repeat. After emptying drop some ice down the stool drive to next location and dump should now read empty. Later RJD
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Old 06-05-2016, 04:08 PM   #5
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if your toilet drops straight into the black tank, you can try the Master Blaster, ..it shoots a jet of water,..... locate where your sensors are and point the spray in that direction, ...might be able to blast away anything that is preventing the sensors from reading correctly

http://www.amazon.com/Valterra-A01-0...s=rv+tank+wand
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Old 06-05-2016, 04:11 PM   #6
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Quote:
Originally Posted by Oaklevel View Post
Only have had the sensors in the current trailer, learned a long time ago about how long it takes us to fill the tanks don't worry about using the sensors.
X2. Always at least at 2/3 no matter what. 10 gallons is a lot of crap especially for 2 people so I look at them occasionally out of curiosity but don't get alarmed when they show full.
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Old 06-05-2016, 04:18 PM   #7
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Dump a gallon of Super Clean and about 5-10 gal of water in it and drive at least 50 miles and drain. Make sure you do some stop and go along with a bunch of curves to slosh it around. Crushed ice will do nothing.
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Old 06-05-2016, 04:19 PM   #8
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I have never had problems with sensors on several RV's. You just need to clean out better when you dump. I have used a wand like shown above but it has a bunch of small holes along the PVC pipe. You just stick it in the toilet and twist it around for a couple of minutes.
Don't rely on the wash out hose connection on the side of your RV.
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Old 06-05-2016, 04:22 PM   #9
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Old 06-05-2016, 04:22 PM   #10
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Dump a gallon of Super Clean and about 5-10 gal of water in it and drive at least 50 miles and drain. Make sure you do some stop and go along with a bunch of curves to slosh it around. Crushed ice will do nothing.
Did not say crushed Ice I said Ice cubes and it does work. Later RJD
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