Grey Tank 1 not draining on 2020 HG Elite 36FL

[JDekker]

I have a 2020 Heritage Glen Elite 36FL. My Grey 1 tank is not draining and backing up into the bathroom sink when running the shower - sensor shows 2/3 full. Black 1 tank drains fine, as do the forward grey and black tanks - no issues. There is more resistance on the grey lever than the black lever at the access panel. Don't want to tear into the underbelly or the access panel unnecessarily. Thanks for any assistance

[SeaDog]

sort of sounds like the valve or operation may be getting stuck. Other then pulling harder to see if it opens and drains I would recommend dropping the coroplast and investigate what is going on.

[Mikeytheb]

Originally Posted by JDekker

I have a 2020 Heritage Glen Elite 36FL. My Grey 1 tank is not draining and backing up into the bathroom sink when running the shower - sensor shows 2/3 full. Black 1 tank drains fine, as do the forward grey and black tanks - no issues. There is more resistance on the grey lever than the black lever at the access panel. Don't want to tear into the underbelly or the access panel unnecessarily. Thanks for any assistance

I find the gray tank valve in the back very difficult to move (open or close). I lubricated the shaft once I finally got it pulled out (seriously, hard enough I was concerned I might break the handle!). That helped some.
When you do get the valve open you are saying it doesn’t drain then? If so, there is something blocking the pipes or the pull has come loose from the valve and it is indeed not draining.
That is a different beast - you would need to open the convenience center and track the cable to the valve.

[Brother Les]

It looks as if you are saying that your unit has four tanks, two black and two gray. Have you found four handles to pull?


Brother-in-law had a unit for two years.... tub backing up... . He 'thought', one gray, one black... he had two grays. After a couple of hours on working on a 'clog'.... he found another handle tucked up behind the skirt... pulled it and made one heck of a mess really fast.