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Old 05-27-2013, 03:19 PM   #1
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2012 23' FB International
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Recalibrate or Bad Sensor?

I have a new 2012 23FB International Signature. We've been doing some practice camping before our first real trip -- so we can work through any issues/questions we have before getting on open road. Turns out, I have an issue.

Upon the first use, and subsequent uses (total of 4 times) after, my black tank is showing completely full after only flushing the toilet one time. I've completely emptied, done the flushing procedure via the inlet outside the trailer, and have also driven around with water/waste inside tank just to see if the sloshing would remove anything that could be stuck to the sensor. Nothing works so far.

Incidentally, my gray tank seems to show that it fills quite quickly too - though I have no benchmark to compare that to since this is our first trailer. This weekend, we took 3 average length showers (maybe 5-8 minutes ea.) + one very quick shower (2 minutes or less) and washed just a couple of dishes. The gray showed completely full. But it went from half full to completely full for the 4th shower. Maybe that's normal. If not, I'm wondering if I just need to recalibrate all my sensors.

Would appreciate thoughts from you veterans out there.
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Old 05-27-2013, 03:30 PM   #2
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Micropulse

For interesting reading go to the toolbar above, hit search and type Micropulse in the window. There have been many discussions on the subject. By the way, I gave up on my monitor system, it's easier to live without it than with it.
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Old 05-27-2013, 03:38 PM   #3
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Thanks! I'll do that. Yeah I feel tied to the monitor panel already but I just don't have a baseline experience to start from to know "about" how much I can use the facilities... Bummer.
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Old 05-27-2013, 04:33 PM   #4
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It will take a little practice to get used to the tanks. Even if the monitors are working perfectly it is a good idea to know what the tanks are doing. If you are using water out of your FW tank you are dealing with a controlled amount of water. You will normally run out of water before you fill the grey/black tanks. Most of the water goes to the grey tank, you will know it's full if the shower doesn't drain. The black tank is slower to fill because of the limited usage. Just look down the stool with a light if you need to know the level. It is better to let the level come up in the black tank before dumping for more thorough cleaning. The grey tank can be dumped anytime or even left open if you are hooked up in a park.
As recommended in a previous thread I bought an extra valve with Valterra fitting to connect between the main discharge line and the sewer hose. With it closed, open the grey valve, then the black valve to equalize water from the grey tank into the black tank, this gives much more holding capacity between dumps. It's all pretty simple with a little practice.
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Old 05-27-2013, 04:57 PM   #5
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good suggestions. I wasn't even close on the black tank, but did dump today because it might be a few weeks before we use it again. i figured no reason to have the sewage in there as we have some hot days coming up and the trailer will be locked up and sitting.
Also, the gray was showing full and everything was draining just fine. So i think both sensors are in need of calibration. I read the threads on micropulse and my issue sounds like it happens a lot. My guess is neither tanks were calibrated or were done so a long time ago. the trailer also had a birthday at the dealer where we purchased it - hence it being brand new but a 2012 model. So maybe just not being used for over a year means it needs calibration also. I'm thinking i'll take the time to do this before hauling it back to be serviced - where it sounds like sometimes they still aren't calibrated (correctly) when taken in. thanks all! I'm very happy to have a place to turn and get feedback - especially so quickly.
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Old 05-27-2013, 05:58 PM   #6
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I also learned that being less than level can be a problem. One morning I was at 1/8 grey, that afternoon 7/8! Barely used any water either. I was pretty far off on my leveling when I got to the site and must have missed that fact.

My dealer tells me they calibrate the tanks at the dealer before I picked it up. I believe them. Good luck!
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Old 05-27-2013, 06:44 PM   #7
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Hmm. Interesting. As I'm thinking about it, I did notice the issue after we re-parked it somewhere less level. I need to go back and check it again after parking it on driveway maybe (which is pretty level). Great feedback --thank you!
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Old 05-27-2013, 07:54 PM   #8
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We purchased our '05 trailer used about two years ago. The sensors seemed to work some, but didn't seem to be very accurate. I finally got around to calibrating my tank sensors (it takes a lot of water) a few weeks ago. We just returned from our second camping trip since calibration. The sensors seem to be working great now.

Just go through the procedure and your sensors will probably work fine. Just make sure your trailer is level in both directions when you do this. I filled both black and grey tanks at the same time with both drain valves open using an additional valve attached to the sewer outlet. This way, I could fill both tanks with the kitchen and bathroom sink faucets (with city water connection).
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Old 06-03-2013, 11:01 AM   #9
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I've owned my 2008 Classic 25 for two months now and the monitor panel seemed to be working well enough. On our 3rd trip this weekend I knew the black tank was empty except for a couple of flushes but no solid waste and noticed the Micropulse was indicating full with a flashing red light. We were at a water hookup site so I ran the black water flush a couple of minutes. No change.

On the way out I dumped the black water tank, then filled with the black flush and checked the level from the toilet bowl then dumped. Still no change.

While I was at the dump station a gentleman came up to ask me about the AS and I mentioned the problem I was having and he said 99% of all RVs have monitor issues. He did recommend the ice in the holding tank trick. I had a bag of ice in my ice chest so I thought why not and dumped it down the toilet. I added a little water. We only had to drive about 60 miles to get home. When I finished parking the AS in storage I noticed the monitor panel black tank didn't flash red which indicates full any more. The level now read 3/4 full. Maybe the ice was doing something and hadn't finished melting and the sensor was giving a false reading but at least it wasn't flashing red. I'll have to go back out in a couple of days and see if the panel is showing empty now.

Kelvin
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Old 06-09-2013, 12:07 PM   #10
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I looked a long time for a live link to a micropulse calibration manual on the web yesterday and finally found one. Thought I'd post it for others. http://campadk.com/airstream/MicroPu...itorManual.pdf
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Old 06-09-2013, 01:01 PM   #11
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Quote:
Originally Posted by SuperTrouper View Post
I looked a long time for a live link to a micropulse calibration manual on the web yesterday and finally found one. Thought I'd post it for others. http://campadk.com/airstream/MicroPu...itorManual.pdf
Thanks for posting! I found same link few days ago but forgot to bookmark it! Very nice. I'll save this PDF on my iPad so it's there for good!
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Old 06-09-2013, 01:04 PM   #12
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Quote:
Originally Posted by SuperTrouper View Post
I looked a long time for a live link to a micropulse calibration manual on the web yesterday and finally found one. Thought I'd post it for others. http://campadk.com/airstream/MicroPu...itorManual.pdf

If you use this manual for reference pay attention to the page numbers on the bottom. They're not sequential, and can screw you up if you do the procedure out of order.
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Old 06-09-2013, 02:40 PM   #13
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We have a 2001 AS and it has a display panel above the stove. I gather it is not a micro pulse. At least not like the one shown in the above link. In the AS manual it mentions calibrating the tank sensors but you need to remove the panel to access the rear of the light display. Is there a trick to pulling the panel out of the cabinet it is inserted into ???
Once it's pulled out and access to the rear the calibration procedure seems pretty easy.
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Old 06-09-2013, 03:55 PM   #14
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If you use this manual for reference pay attention to the page numbers on the bottom. They're not sequential, and can screw you up if you do the procedure out of order.
Yeah, you need a decoder ring with the manual. Page one, "go to page 11" yikes!
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