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Old 07-08-2018, 11:22 AM   #1
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New Aire Fresh Tank Sensor - Super Really Very Wrong

I was sanitizing the fresh tank with bleach and used auto fill which shut off when the sensor read 100%. When I drained the tank (low point drain) it took 9-1/2 minutes until the sensor read 0%. The tank continued to drain for another 9 minutes with the sensor reading 0% the entire time.

This was disappointing because there will be no way to know how much fresh water is actually left once the sensor hits 0% and it being SO wrong makes using the sensor to manage fresh water available pretty useless.

I thought that at least the tank was full (or close to full) when the sensor was at 100% ---- WRONG

After the fresh tank was empty I filed it again to 100% using auto fill. I then turned all the faucets on to rinse the lines out. The fresh tank went down to 0% as the gray tank started to fill up. The water continued to run well after the fresh sensor hit 0%, as it did before. However, when the fresh tank was completely empty the gray tank sensor was showing only 77% full. This means the 75 gallon fresh tank only filled the 60 gallon gray tank 46 gallons. This is assuming the gray tank sensor is correct which it may not be.

Unless I'm missing something the auto fill feature shut off filling the fresh tank when the sensor hit 100% but there was actually less than 50 gallons in the the 75 gallon fresh tank.

Has anyone else experience this and any thoughts on a fix for the sensor?
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Old 07-08-2018, 01:44 PM   #2
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Mine's off, but I don't think it was that much. Have you reset the calibration on it via the silverleaf panel (I don't have my NA yet; maybe there's only calibration for grey and black? I don't remember)
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Old 07-08-2018, 02:12 PM   #3
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The NewAire might be different, but on my coach, the autofill feature only fills the tank part way (like 2/3 full).
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Old 07-08-2018, 03:11 PM   #4
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On old coach water systems we could adjust the tank fluid levels with a small screw driver to be pretty accurate, you mean to tell me you can not do this on a New Aire, so much for more modern equipped coach's.
I guess sometimes older is better, like old wine.
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Old 07-08-2018, 03:31 PM   #5
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Sounds like you have to recalibrate your tanks on SilverLeaf:







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Old 07-08-2018, 08:06 PM   #6
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Quote:
Originally Posted by turbopilot View Post
Sounds like you have to recalibrate your tanks on SilverLeaf:







As always Turbopilot....
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Old 07-08-2018, 09:33 PM   #7
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Now that sounds more like it and repeated twice.
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Old 07-09-2018, 05:47 AM   #8
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As always Turbopilot....
Turbopilot indeed! Thanks so much.

Is there a standard passcode to access the special features?
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Old 07-09-2018, 07:14 AM   #9
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Turbopilot indeed! Thanks so much.

Is there a standard passcode to access the special features?
Yes, 42. Newmar keeps it secret so you can't foul up other sensitive settings. Calibrating a tank is not one of those issue but it is hidden behind a code.

My tanks could be calibrated better but I have not yet used this calibration routine so do at your own risk. Since we don't have the documentation we are on our own.
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Old 07-09-2018, 01:25 PM   #10
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GW buy one of these so that you know more accurately how much water is actually going into the tank.
https://www.amazon.com/Orbit-56854-H...49413728&psc=1
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Old 07-09-2018, 08:10 PM   #11
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GW buy one of these so that you know more accurately how much water is actually going into the tank.
https://www.amazon.com/Orbit-56854-H...49413728&psc=1


I use the hose meter above as an ‘input’ to the fresh water tank and a http://www.jakmeter.com as measure of how much water the water pump moves. The Jak meter, installed literally right at the water pump inlet, seems to be the most accurate.
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Old 07-09-2018, 11:16 PM   #12
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When we doing FPU in Nappanee, we tested the auto fill feature. The fresh water tank behaved much like you described—it filled to 100% then dropped to around 80% after the water fill valve closed.

I had our tech investigate. They found a duck bill valve on the air vent out of the fresh water tank that wasn’t allowing the air out of the tank fast enough. Pressure builds up in the tank some how giving false indication to the tank sensor. When the pressure eventually escapes, the auto fill would resume and the cycle would repeat several times until the tank was actually full. We visually verified the actual tank level (I believe it’s visible behind the wet bay control panel).
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