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Davidlee64's avatar
Davidlee64
Explorer
Feb 05, 2019

Black and Gray Tank issue.

I have been living in my 36' fiver about 1 1/2 years. I have never put any solids or TP in the toilet. Gray is only for normal usage, dishes, showers, etc. I empty the tanks no more than a week. All has been well. We poured a slab and the fiver has been relocated to the slab.
I went to empty the tanks, like normal, and nothing came out of either tank. Gray valve is a bit difficult to operate, but this is not new. Black valve works like normal. It has been about a week since the move, and only normal use, but still unable to empty. I would like to empty them for piece of mind to say the least.
I have used the flush attachment to add water, and that comes out no issue. What additive would be advised to try and get this to work normally? I am not a happy camper not knowing how much is in the tanks.
  • My first thought is you have frozen stuff in the tanks. It's been cold lately so it's possible you may have a giant ice cube in both tanks. The water from the flush would run out as long as the discharge wasn't blocked.
  • Turn off water, open the toilet bowl valve and shine a light down into the tank - unless you have a bend in the pipe. Is there water in there? what do the sensors say?
  • If you have never put solids into the toilet and are using the flush feature and that water comes out as you say, I would have to think the tanks are empty.:?