Forum Discussion

NorthwestBound's avatar
Jun 23, 2016

Tank monitor question

We have been in our 99 Jayco 243 for two weeks now. Ive had to learn a lot of lessons so far. One is double checking the slide locks are out before extending the slider, the other is making sure the tail gate is down before pulling away from the 5ver.

So a few days ago, i thought to myself, it sure would be nice to know if the holding tanks are full or not. Maybe have some kind of monitor or sight glass.

Well low and behold, this whole time, theres a monitor on the wall under the kitchen cabinet!!!

So, ive been messin with this thing, since the owners manual is no help, and it shows, i believe, that i have more tanks than i thought i did.

I knew i had a fresh, a grey and a black tank, but the panel also shows "galley."

Im assuming that is the pipe with a blade valve coming from the area near the fresh water tank which is under the kitchen area.

So, ive emptied all the valves, starting with black, then grey, then the unlabeled blade valve. And afterwards, i get readings of fresh=empty, black=full, grey=half, and galley=full.

Im sure the fresh tank is close to empty, havent used it yet, been on city water the whole time. But the others should read empty. So im not sure what to do about the grey and galley, im pretty sure i need to dump ice and chemicals in the black tank for the hour ride to the next campground.

13 Replies

  • I use a clear elbow between the drain valve and slinky hose so can visually verify when a tank is done draining. Barring odd problems like wrong slope on the trailer, clogged drain, etc, I'm pretty sure I know when a tank is empty, in spite of the gauge readings.
  • There are products advertised to clean the interior tank sensors...might work. We work at keeping our tank sensors working properly...I big task...but even the extra effort does not always pay off.
  • The sensors on the tanks are notorious wrong, even on new trailers. Most ignore them. Based on typical routines, you get good at anticipating how long a given tank can go without water backing up, forcing you to dump the tanks.