The manual for my vacuum toilet in a 2013 35k Bounder says that occasional vacuum leakage is normal. After hearing the pump run every 15 minutes all night, the dealer said that was normal. How often d...
If mine loses a seal it's because something is stuck between the rubber seal and the flush ball and I can tell because the water has disappeared from the bowl. Make your self a little L shaped screw driver type tool and clean underneath the rubber seal. I've had mine for 8 years and the vacuum pump never runs unless I flush the toilet. Change dealers for your repairs. Just my 2c worth.