Why saniflo xr makes humming noise but wont pump out.it used to start up on its own

SOURCE: pumping stopped

Well it sound likes you have 2 problems. 1st is the float switch is set to high,and pump wont come on till it raises higher then tray. 2nd. sounds like empeller came lose from shaft. I hope this help. :)

SOURCE: Saniflo Macerator Noise

If it's a one shot cleaning and not an ongong additive, bleach can be used to dissolve the tissue.

Charlie

Testimonial: "i havent tried it but its very helpful. Thanks."

SOURCE: my saniflo plus is making a humming noise but not

My saniflo-plus system is about 12 years old..recently it stopped draining the toilet, etc. I pulled the cover off the pump and checked for blockage and spun the cutter blades...The motor just hums....do I need to replace the entire encased pump assembly?? Help

SOURCE: My saniflo macerator plus has

It could be a blockage in the blade, impeller or the discharge line. Also could be a defective starting capacitor, since the capacitor spins the blade and impeller, if the capacitor goes bad it will make the unit hum and not pump out the waste until eventually it shuts off completely and would not kick on and off at all. At this point, the capacitor may have to be replaced. You should contact Saniflo to order parts.

SOURCE: I got a saniflo plus but motor runs but pump is not pumping?

The internal motor capacitor has failed - most common problem with these units

I have posted repair instructions here:

Saniplus repair instructions

It is a PDF