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Topic ClosedStorage tanks sensors

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rawest50 View Drop Down
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Direct Link To This Post Topic: Storage tanks sensors
    Posted: 26 Mar 2021 at 10:02am
I do not think my Gray and black tank sensors are working. Is there any way to check the tanks visually or another method?
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Direct Link To This Post Posted: 26 Mar 2021 at 11:35am
Those sensors are notoriously inaccurate. You can open the flapper valve and look in the toilet and see if the black tank is full. If you don’t want water to run while you’re doing that disconnect city water and leave your water pump off.

If water comes up the shower drain then the gray tank is full.

Don’t want to wait till the tanks are completely full? Neither do I. I fill the fresh tank (I don’t use the city water connection even if city water is available). Drain the gray and black tanks. Since all 3 tanks are 30 gal it’s impossible to fill the gray and black tanks before the fresh tank is empty. The fresh tank is translucent so you can see how much water is left. When it gets low I drain and refill. Problem solved and no need for the sensors.
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rawest50 View Drop Down
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Direct Link To This Post Posted: 26 Mar 2021 at 1:08pm
That is good to know. I did not want black tank water backing up into the RV. 
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Direct Link To This Post Posted: 26 Mar 2021 at 2:34pm
Not to worry. You will typically put much more water into the gray tank than the black tank. I estimate that out of a 30 gallon fresh tank fill we put about 20-25 gallons in the gray tank and only 5-10 at most in the black tank. Even conserving water very aggressively (we can go a week plus on 30 gallons) a lot more goes to dish washing and showers than to flushing.
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rawest50 View Drop Down
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Direct Link To This Post Posted: 26 Mar 2021 at 9:31pm
I dumped this morning since we had another week camping. I added a lot of water before I dumped. 
When we had the black water tank hose hooked up I turned on the black water sprayer. I left it on through the entire process that follows. I partially filled the tank 3 times after closing the valve. This was after the initial dump. I then rocked the Pod pretty good. You could hear the water sloshing in the tank. We had placed everything in the floor. Each time a few more pieces of paper came out. The 3rd time nothing but clear water. Checked the status on the sensor and it showed it was empty. I will let you know if that was a solution or just a sensor messing up. Gray water seems to be working fine. 
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Direct Link To This Post Posted: 27 Mar 2021 at 1:25am
Really, you should never count on those sensors to be accurate.  At best, they might be like the clock that's stopped: even that's correct twice a day.  You're cleaning and rinsing routine is great, but you know you're empty without looking a the lights.... and because they're right doesn't mean they'll stay right as the tank fills. 

The sensors seem like a good idea, maybe even an essential, but they're not.  They are a cruel joke and totally unnecessary with a little experience and common sense.  Learn to live without them!  I haven't even looked at mine in years.

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jato View Drop Down
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Direct Link To This Post Posted: 27 Mar 2021 at 7:08pm
I have to agree about the sensors for both gray and black water but mine for some odd reason reads quite accurately for the FW tank.  Must have been a mistake at FR to have one that actually reads correctly.
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Direct Link To This Post Posted: 27 Mar 2021 at 7:20pm
My FW tank is also accurate. The gray is more accurate than the black for sure. Even after a thorough treatment and rinse which gets the black tank sensors working, it does not last because the first few days of use, especially when we are moving, ends up with the black tank sensors not working properly again.
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Direct Link To This Post Posted: 27 Mar 2021 at 7:54pm
Yep the sensors on the freshwater tank work the best too bad that you really don't need them there because the tank is translucent and you can see the water level. Oh well...
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Direct Link To This Post Posted: 27 Mar 2021 at 8:41pm
Fresh is translucent but gray and black are not. Not sure if you understand my question. 
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