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Old 06-22-2014, 10:15 AM   #1
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Anybody have any success getting tank sensors to function properly?

Thinking that my Sani Con Macerator was malfunctioning, my father disconnected everything to test out the system, and we find out the tanks were empty, or nearly empty.
So....the black is empty and reads half, the gray will read half when I put a mere 2 gall of water down it.

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Old 06-22-2014, 10:22 AM   #2
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Try looking at this previous thread that discusses your topic

Black tank monitor issue

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Old 06-22-2014, 01:28 PM   #3
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You can spend a bunch of money continually pouring in tank cleaners if you choose, they may or may not work. As mentioned in the thread that Pasdad1 posted, fix the root of the problem and consider bypassing the internal tank sensors all together. The SeeLevel replacement system is simple to install and eliminates the internal tank gauges... problem solved and no need to pour money down the drain continuously on the latest and greatest tank cleaners.
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Old 06-22-2014, 02:09 PM   #4
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I installed the Horst Miricale Probes in both tanks of both mine and my parents MH's They work great.

Horst Mircacle Probes - Get accurate reading on your RV's holding tanks
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Old 06-22-2014, 02:17 PM   #5
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When water backs up in the shower, I know my gray water tank is full. When I look down the pipe in the toilet and see stuff, I know my black water tank is full. The guages are useless.
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Old 06-22-2014, 03:38 PM   #6
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It seems that most tanks with the internal sensors, the sensors do not function properly. This is caused by "stuff" fouling the sensors. I have had the same problem in the past. But since I followed some advice given me by Col. Duckwitz on the Monaco board, I have had no problem. First you must clean the tanks as clean as possible, and keep cleaning them until you get the gauges to work properly. There is a lot of ways to clean these tanks and if you will check for post on tank cleaning you will find many. Then, pour in a few ounces of Rid-X and a few ounces of Dawn dish washing concentrate. You then continue to sue the Rid-x and Dawn in your tanks. You will not have odor problems and it keeps sensors cleaner. Just make sure you properly flush tanks when dumping. This works for me and a lot of others as well. But first and foremost you have to get the tanks as clean as you can and get the sensors cleared and working.
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Old 06-22-2014, 03:55 PM   #7
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Mine work well most of the time, when they do act up it's the black tank and a couple three good flushings with the tank spray system sets it right again.
Vince and Susan
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Old 06-22-2014, 05:32 PM   #8
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Old 06-22-2014, 09:25 PM   #9
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try this the next time you dump your tank. after dumping, put about 2 gallons of water a small bag of ice or empty your ice maker and a gallon of white vinegar , all of that sloshing around on the ride home cleans everything up nicely and the sensors get the stuff cleaned off them.
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Old 06-22-2014, 09:58 PM   #10
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I use to have a problem with my tank sensors not reading correct and odors. I used everything suggest by other members on iRV2 and at the RV store. My level monitor always read correct and don't have any odors from either tank. I only use cheap laundry detergent and cheap dishwashing machine detergent, liquid or powder. Just dissolve the powder before adding to the tanks. I add at least one cup of each to each tank. I buy mine at the Dollar store or $.99 only store. When you dump the black tank use the tank flusher for at least 5 minutes every time. I have a clear fitting on mine so I can see when the water is running clear. You'll be surprised how much gunk comes out of the black tank the first couple of times. Been using them for almost two years and still see scale in my hoses when I rinse them.
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Old 06-22-2014, 10:45 PM   #11
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Thanks Everyone!

Lots and lots of RVers do Dawn, ice and even Calgon water softener. Tomorrow when I start my trip back, I'll have ice in there, dish soap, and enzymes/bacteria solution. I mean I've already got that stuff. ..might as well use it!
Also, that I've been stationary in this spot for a month didn't help. Add to that I didn't let the tanks get full enough (due to the sensors!)
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Old 06-23-2014, 06:05 AM   #12
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Nope never look at them. If I see water backing into the shower I know I should of dumped sooner.

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Old 06-23-2014, 02:45 PM   #13
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Originally Posted by ChallengerRN View Post
Nope never look at them. If I see water backing into the shower I know I should of dumped sooner.

Yep, that's my method, along with recognizing the sounds your drains make when the tanks are close to full.

Fred and Bonnie
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Old 06-23-2014, 04:23 PM   #14
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I have an old 92 Eagle and mine still work, both gray and black tanks as does the water tank. So do the battery monitors, and the propane monitor. However my odometer doesn't work nor the speedometer, I use my Rand McNally GPS for those.

We put in a new odometer and it only accumulated about an 1/8 of the miles and when we put it in the speedometer quit working. We are going to try and see where we put the old one, we kept it and put it back in, hubby said it might make the speedometer work again at least.

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