We used to have an A-Frame. When you look at your cassette (in place), there was a clear tube running up the left side of the cassette cubby. This tube shows how much water is in the reserve. To fill it (usually when you get to your campsite), before you attach the water to your camper, open the cassette cubby, and swivel out the large tube at the top and unscrew the cap. Fill with water until the clear tube is filled to about an inch from the top. Your cassette now has enough in the reserve for about 2 days (with 2 people in camping in your camper). Hope this helps.
Bentbev, this unit doesn't have a reserve. It pulls from the fresh water tank or city water supply. I like that.
bentbev’s instructions are exactly right. I have a 2017 T21DMHW. It took me a while to figure it out. Manually pour water into that reservoir where it swivels out. Manually pour water or fill slowly with garden hose. It holds a few gallons of water. Fill and notice the sight glass reach full. You will then have water to your toilet. Be cautious and make sure freezing temperatures are over with in your part of the country. Here in Missouri it’s still cold.
I can now see that my 2017 T21TBHW unit’s flush water works differently than yours. I hope you get your issue resolved. Here are pics of my toilet’s reservoir fill for flush water in case someone else out there is unaware and has this model.
My camper is T21TBHW Highwall 2018. The Thetford manual is useless. Does not talk about anything except how to remove the casette. From what I have read the unit in the camper is a C223-S thetford toilet.
My camper is T21TBHW Highwall 2018. The Thetford manual is useless. Does not talk about anything except how to remove the casette. From what I have read the unit in the camper is a C223-S thetford toilet.
Looks like the changed the cassette water lines as-well-as the cassette model from 2017 to 2018.
Linear Mode
