Status of holding tank capacity

[NEDBETTY]

Status of holding tank capacity.
We have a CB 31 year 2014 I do not see any gauge that indicates how full the holding tank is.
The flush indicator has a green light does that by chance change colors to indicate capacity as it fills turns to yellow and red maybe?
Thank you,
Jeff

 

[Gin]

Jeff, is your head a Techma? If so, is the green light in the lower right hand corner of the control panel? If so, then it may be like mine (on a 2019). The green goes to orange as the tank fills, and then orange to red if it gets to the point where a pump out is recommended. I use the head as sparingly as possible, and have never gone past orange (and then, only twice).

Check out this link to the owner’s manual and see if it seems to fit your model of head:
https://www.thetford.com//wp-content/uploads/2017/02/98229A-IO_EasyFit-PrePls.pdf

Gini

 

[NEDBETTY]

That is same one, thanks very much!

 

[Wee Venture]

One caveat... There have been some issues with the little sensors falling off the tank (they are stuck on with adhesive).

When we first got our boat, we naively trusted the lights to tell us when to pump out and ended up getting into an embarrassing situation when the tank overflowed...with the light in the head still showing green. Make sure there is a sensor halfway up the side of the tank and one near the top. If you place your hand over the sensor near the middle, the light should turn yellow. A hand over the top sensor should make it turn red. (There is no sensor at the bottom.)

John