Apache 634L waste water sensor!! - Motorhome Forums, Motorhome Discussion, Motorhome Chat

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post #1 of 5 (permalink) Old 04-10-2015, 22:01 Thread Starter
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Red face Apache 634L waste water sensor!!

Hi!

New to camper vans and have a few problems? does anyone know how to get to the waste water level sensor. Been advised that it a sensor not a float system and probably just needs cleaning off.
the van is a 2008 model Auto Trail Apache.

cheers Ron
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post #2 of 5 (permalink) Old 04-10-2015, 22:30
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Quote:
Originally Posted by Artycarp View Post
Hi!

New to camper vans and have a few problems? does anyone know how to get to the waste water level sensor. Been advised that it a sensor not a float system and probably just needs cleaning off.
the van is a 2008 model Auto Trail Apache.

cheers Ron
On my 2013 Autotrail the waste water sensor is a series of stainless steel studs/bolts, mounted at different heights in the side of the tank. Dependent on how many studs are covered by water the gauge SHOULD react accordingly.

The gauge could also be a series of steel probes, of different lengths, mounted in the top of the tank.

Both systems can get clagged up and cause false readings. In the case of mine (using the studs) the grime on the insides of the tank will cause problems and will fool the gauge into thinking it's part full, even when it's empty. Cleaning the tank (or the probes) will often resolve the problems. This can be done, on my van by removing the bottom cap and cleaning with a hose pipe spray fitting. Others have suggested using a bio washing liquid in the tank for a few days. I think there are also specialist waste tank cleaners available.

Last edited by philoaks; 04-10-2015 at 22:32.
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post #3 of 5 (permalink) Old 04-10-2015, 23:29
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Quote:
Originally Posted by Artycarp View Post
Hi!

New to camper vans and have a few problems? does anyone know how to get to the waste water level sensor. Been advised that it a sensor not a float system and probably just needs cleaning off.
the van is a 2008 model Auto Trail Apache.

cheers Ron
Hi,
Not sure you will get a result with this one. I have a 2011 Apache and the waste and fresh water sensors have never been accurate. Quite a few people I have talked too say the same. The sensors seem to have a mind of their own!!

However best of luck.

Nidge

Never argue with a idiot, they will drag you down to their level and beat you with experience.
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post #4 of 5 (permalink) Old 05-10-2015, 20:28
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Don't both with it, When it's full the panel will bleep, till then, no problem

Be seeing you! No. 6
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post #5 of 5 (permalink) Old 05-10-2015, 21:29
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Seems most Autotrails experience this problem at one time or another. Have had the same as mentioned above and used a bio wash combined with a grey water cleaning agent in the past and that seemed to work. Left the tank full of the cleaner etc. after giving it a good slush round with a drive about then emptied the tank the following day and all indications are working well since.

Cheers

Ian
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