Sorry to troll, no pun intended on a voting site as my vacu flush system is on an RV. I understand that one has to change out the duckbill valves every once in awhile, so I have ordered them and stand ready to do what is sure to be a messy job. While I am not sure that it is my problem, I know that as a preventative maintenance thing it won't hurt to change them anyway. I have posted a YouTube video on what my problem is, so if you are someone with a heck of a lot more experience than me maybe you could give me some advice. What is essentially happening is, in my RV I have two toilets. Beside each is a red light green light electrical panel, simply green means it's okay to flush and red means don't flush. The pump makes quite a sound, my thinking is that perhaps there is no vacuum and again maybe the duck bill fix will help. Is it possible also there is a switch problem?
I would say 95% of the time it makes the sound you hear in the video, and when it is not making that sound the green light is on. As you can see in the video the holding tank is fairly full, access doesn't seem to be too tricky unlike some of the boats I have heard the system is found on.
Sorry for the long message, but I wanted to set up the video.
https://youtu.be/k_LHhQRq95E
I would say 95% of the time it makes the sound you hear in the video, and when it is not making that sound the green light is on. As you can see in the video the holding tank is fairly full, access doesn't seem to be too tricky unlike some of the boats I have heard the system is found on.
Sorry for the long message, but I wanted to set up the video.
https://youtu.be/k_LHhQRq95E