20 Most Recent Saniflo Sanibest Grinder Pump Only 013 Questions & Answers

blocked drain outside you will need to get somone in to flush it out and the problem will be solved

Saniflo Sanibest... | Answered on Nov 05, 2014

You should be able to purchase this at any local hardware store.
Lowes, Menards , or Home Depot. They may have to order it but I am sure that if you take the old parts they can make you a replacement if they do not have the direct replacement hose there.

Saniflo Sanibest... | Answered on Oct 20, 2013

Sounds like the pump needs to be de-watered completely and cleaned. There is a pressure chamber that contains, I am guessing here since I hve never taken one apart, a float and a microswitch. If the float gets heavy with gunk or gets a hole in it, it will not float as well and will take more water in the drain pipe to cause it to rise up and activate the micro switch. I don't know how hard it is to disassemble these units but hope it is fairly simple since they are pricey. You said it was only on a sink, not a toilet or both. It is possible that grease has built up (the gunk) and a hot water flush may do the job for you but it will take a lot of hot water flowing through the grinder, that of some grease dissolving drain cleaner.

Saniflo Sanibest... | Answered on Oct 08, 2012

The Sanialarm has a level pressure switch which can fail in the on or off position. I would replace the switch with a new one. Not knowing how old the unit is there may also be a build up of lime inside.

I hope that this makes sence to you and helps you out.

Be safe and have a great weekend. Tom
Dont for get to rate us we need your feed back :)

Saniflo Sanibest... | Answered on Sep 10, 2011

the pressure chamber is sticking or the micro switch has gone bad...

Click here

There removal instructions there and exploded diagrams to show you how everything comes apart...
I think the the problem is part#17 on the diagrams... the micro switch...


Saniflo Sanibest... | Answered on Jul 14, 2011

Either the toilet is leaking water through or the check valve on the outlet pipe is not seating completely and allowing water to return to the tank.


Saniflo Sanibest... | Answered on Apr 20, 2011


Stop using it. Sounds like the "Impeller" is going bad or broken. There are replacement parts or you may buy another ejection tank.

Saniflo Sanibest... | Answered on Dec 23, 2010

the unit sounds like it is not vented properly check vent connection if there is a venalator on it that dosent work it has to be vented to attic the pump has to vent in and out not just in that the ventalators are designed for

Saniflo Sanibest... | Answered on Nov 28, 2010

loosen chain to plug in the back of the toilet it is too low so not much water is needed to flush

Saniflo Sanibest... | Answered on Jun 03, 2010

Either the rubber membrane or the microswitch is at fault.

Saniflo Sanibest... | Answered on Feb 26, 2010

Thanks for the clarification - This rules out power supply to the unit, motors/pump and points more towards why the water would be pumped from the WC flush and not the basins ...

1. The Saniflo range of macerators have a pressure switch that engages when the water pressure inside the unit activates a microswitch that is encased in a waterproof container. It is possible that the water pressure from the shower and basins is not great enough to activate the internal switch.

So, I would propose two checks

a) If the unit previously worked for the shower and basins something has changed and it is most likely to be gunk inside the unit causing the switch to be less sensitive and only activate on the high pressure that the WC would provide. The fix would be to open up the unit and clean it - please let me know if you need info on how to do this

b) If this is a new install and the shower and basins never worked, you should check the fall in the pipework into the Saniflo is sufficient (should be 1 in 70 from memory - full install instructions are available from the Saniflo website)

c) It could be that if the unit has been in for a long time with a large number of operations that the microswitch is starting to fail and is not as sensitive as it once was (quite unlikely) - but always a possibility!

Replacement microswitches are freely available online and you should also be able to get the exact match spares from Saniflo

If this helps please leave feedback - if not please let me know and I'll try and help some more!

Good Luck :)

Saniflo Sanibest... | Answered on Feb 05, 2010

could be left from quality testing

Saniflo Sanibest... | Answered on Nov 14, 2009

y have a reset butto which may have pinged out try resetting it or it may have overloaded due to a blockage never put paper or towles in them water expanps them and causes this problem

Saniflo Sanibest... | Answered on Nov 14, 2009

Does the shower or sink back up into the toilet bowel after running for a few minuits?

If not:

The bowel is clogged. Fill it with water then use a plunger

Saniflo Sanibest... | Answered on Feb 07, 2009

Your description sounds like plumbing from before bacteria was discovered. The output from a Saniflo macerator should be sent to a foul drain or cesspit and not a rainwater drain.

Some authorities allow local rainwater runoff into foul drains but this situation is gradually being designed out.

Could be your Saniflo installation didn't meet building regulations when it was installed. The fact it has been working fine for 2 years doesn't count for anything if it doesn't.

Saniflo Plumbing | Answered on Feb 03, 2018

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