Comments on: RV Doctor – A Real RV Plumbing Miracle!

By: Eldon Ashbaugh

Eldon Ashbaugh — Fri, 27 Nov 2009 03:27:34 +0000

On the subject of the tank probes, I was having the usual trouble so I bought the tornado rinser and attached it to my tank. When I ues it had a lot of bad stuff that was causing my tank to plug up just under the toilet, probably been there for years. When I cut the hole for the rinser, I had to relocate a probe. Trying to remove the probe and it fell into the tank so I flushed it out. It would not go in properly, soooooooo I went to the hardware store and found stainless steel machine screws that were the length of the thickness of the tank wall plus the thickness of the wire connector. I drilled holes in the tank and screwed the screws in so they were either fluse or slightly recessed in the side of the tank. You might have to grind the end of them so they don’t extend into the tank. I did not use any sealer since the screws went in very tight. I have not had any problems with leakage as of yet but I have only used it a couple of times. I figured the probes not sticking into the tank their would not be anything to get hung up on. It will probably be next spring before I have a chance to give them a real hard test.

By: Dalton Tamney

Dalton Tamney — Wed, 21 Oct 2009 01:20:57 +0000

As was suggested I tried to find where the probes are on my holding tank in my motorhome. No luck. The entire holding tank is apparently enclosed inside the rig with no obvioust access to the probes. I guess I am stuck with the ones I have even though they are useless. Manufacturers should be looking to install the best probes available instead of those that do nothing but cause aggravation. I think Horst Miracle Probes will find a smaller market than they originally anticipated since, I suspect, the aftermarket sales will be limited to the relatively small number of rigs for which these probes are accessible. Such a shame.

By: Thomas Becher

Thomas Becher — Fri, 16 Oct 2009 19:20:45 +0000

Always a day late and a dollar short. I just installed a Garanett SeaLevel guage. But I know it will never short out or fail because of junk in the tank. It works on capacitance thru the walls of the tank. The new product sounds good and I would have tried it.

By: Harf Overton

Harf Overton — Fri, 16 Oct 2009 15:02:19 +0000

We have a Holiday Rambler (07 Endeavor) with a Techma toilet with outside sensors. Sometimes they work and sometimes they don’t. We have tried everything, I think. Very annoying. Any ideas?
Harf

By: Phil Schoner

Phil Schoner — Fri, 16 Oct 2009 14:29:18 +0000

I have a 2007 Monaco Dynasty with an Alladin system. It shows tank levels in 10% increments. I think it works on pressure readings, not electrical probes. I say this because when we travel to different elevations, the readings will be obviously in error for a day or so until the system adjusts to the new atmospheric pressure.

Phil

By: FLOYD MAC DOUGALL

FLOYD MAC DOUGALL — Fri, 16 Oct 2009 13:21:51 +0000

I have the same problem with my holding tanks. but a little different, mine will show empty but will show different readings when not using the rv ; any comments. THANKS FLOYD

By: BikerRon70

BikerRon70 — Fri, 16 Oct 2009 11:47:00 +0000

I guess someone always has to be negative so it is me.

I bought these Horst probes, for both tanks, and installed them on our 2007 Coachmen Class C. I bought the appropriate probes for the gray and black water tanks. I had to drill new holes in the tanks, install the new probes, and switch the wires. I was concerned about leakage issues and if the expandable rubber doughnut would really work properly. They do seem to be holding and not leaking.

We are campground hosts for the month of October in a Wisconsin State Park, with electricity and water hookup, but no sewer hookup. Our gray water tank seems to fill up quickly so last week I drove over to the dump station to dump the tanks. After dumping and using a tornado tank washer in the black tank, I was still getting a reading of 1/2 full on the monitor panel with the 3/4 light just starting to glow. After a week, today the monitor panel shows that the black water tank is full. I know it is not full. We haven’t been using the toilet that much. When in doubt use the old “look in the tank through the flushing toilet with a flashlight trick” to see if the black water tank is really full.

The gray water tank does fill faster. I tell my wife that we need to eat out more often. We don’t shower in the MH unless we have a sewer hookup. The probes in the gray tank worked fine showing empty after emptying and now are at 3/4.

By: catchesthewind

catchesthewind — Fri, 16 Oct 2009 03:47:07 +0000

Gary, This is one of the best written and easy to understand articles I have ever read. I will print this out and use it for reference and replace my old sensor probes. Thank You very much.

By: catchesthewind

catchesthewind — Fri, 16 Oct 2009 03:44:18 +0000

Dalton, Start from where you hook up your drain hose and follow the drain pipe back to the tank. If you dont see the sensor location right away check if your tank is encased in insulation. If so try to find where the wires exit the tank and go from there. Good luck!!!!!!!!!!!!!!!!!!!!!!!!!

By: Tireman9

Tireman9 — Fri, 16 Oct 2009 02:22:46 +0000

I also have problems with getting a correct level reading but I am an Engineer and have tested my system and do not believe it is dirty senders.
My black tank is a 27 gal unit. The first year I had our Coachmen I noted the tank seemed to fill very quickly but I dutifully dumped my tank frequently.
Earlier this summer I was considering getting the exterior sensors after helping a friend with his tank sensors but first I decided to confirm the cause for my problem.
I dumped my tank. Then I used the sprayer wand you can put down the toilet to be sure stuff was cleaned off the tank sides. I then filled the tank with just water from a hose TWO times.
I now felt the tank was clean.
I then added measured amounts of water in 3 gal increments and checked the reading. At empty and w/3 gal in the tank the sensor panes read empty.
I continued to add 3 gal at a time and checked the tank level light panel.
after adding a toal of 6 gal the indicator registered 1/3 full which is a little high. The real problem became aparent when the panel read 2/3 full with 9 gal and FULL after only 15 gal.
Clearly this isn’t a dirty sensor problem. Just a failure of the manufacturer to place the sensors at the correct locations.

Now I use a flashlight, look down the toilet and know when the tank is getting full.

So much for Quality work by RV manufacturers.