Vacu flush runs intermittently

[jclark003]

If no water is draining down it is usually the base basket (4 studs at the base of the unit) the duck bills as previously suggested, or the ball shaft (has an o ring in the shaft). The vacuum regulator can also leak. If you turn off ac's refrigerators, etc you usually can hear the leak if you listen closely to the head base or down by the pump.

Troubleshooting guide:

http://marinesan.com/v/Vacuflush%20-Supe...Service%20&%20Troubleshooting.pdf