I just looked at the Heartland website at the Big Country trailers. You have a black tank flush.
If you are on water and sewer hook ups, then drain the tank, run the flush for a long, long, long time, occasionally allowing the tank to fill with some laundry detergent in it (don't be afraid to add double or triple the amount of detergent you'd use for a load of laundry) and let it sit so the detergent can do some work.
Then drain the tank while running your black flush for a long, long, long time (hopefully your water is cheap or not metered).
I did this in my trailer, adn the black tank sensors have been untrustworthy for months. I now have working black tank sensors. I don't expect them to work later, but they work now.
Use lots of water to flush that tank, let it fill with "clean" water and detergent, drain, rinse, repeat, ad nauseum. It might work. If it doesn't look for a tank cleaning wand. You'll need to know if you toilet drains straight down directly into the black tank or if there is a bend in the pipe. There may also be a nearby "black tank cleaning service" that will come to you.
Over time, if you are able to get your black sensors back, expect them to not be reliable again, and soon. You probably already knew this.
ORV 19B Full Timer, '14 Ram 2500 Diesel and a GSD. This signature updated, August 13, '16.
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