Indicates perhaps a faulty pressure switch. otherwise: this happens often in hard water areas due to build up of limescale. Use a descaling agent (acidic) to clean the saniflo - can be introduced via the toilet bowl.
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IT SEEMS TO ME THAT THE BALL-**** (FLOAT SWITCH) IN THE CISTERN IS SET TOO HIGH UP. THERE ARE MANY DIFFERENT MODELS BUT ALL SHOULD BE EASILY ADJUSTED. HAVE A LOOK INSIDE THE CISTERN AND ADJUST THE FLOAT SO THAT THE WATER STOPS AT A LOWER LEVEL. IF THE WATER IS CONTINUOSLY FLOWING INTO THE CISTERN WHEN FULL YOU MIGHT NEED A NEW INLET WASHER
Water pressure makes the unit kick on and off. Most likely somehow water is draining back into the pump. Check the flapper in the flush valve, inside the toilet tank and see if its leaking water into the bowl and from the bowl into the pump. Also, in the 90 degree discharge elbow there is a check valve with a rubber flapper that opens up to allow waste to pump out and it closes to prevent waste water from draining back into the pump. The check valve may be defective or it may be stuck open allowing waste water to drain back into the pump and is making the unit kick on and off by itself.
This could be a problem with the capacitor that has gone bad or something stuck on the blade or impeller and is not allowing the waste to be pumped out. Typically when the capacitor has seized up or there is a clog on the drain pipe, blade or impeller; the unit will just hum and not pump the waste out and eventually back up on the toilet and overflow.
Water pressure makes the unit kick on and off. If it's turning on by itself then most likely somehow water is draining back into the pump. It could be leaking water from the toilet tank, to the bowl and from the bowl to the pump. Or the check valve inside the discharge elbow may not be closing all the way down and is allowing waste water to drain back into the pump creating enough water pressure that makes the pump kick on and off. Inspect the flapper on the flush valve and the check valve on the discharge elbow on top of the macerating pump.
Water pressure makes the unit turn on and off. If it turning on by itself then could be water draining back into the pump. Water could be leaking from the check valve on the discharge elbow into the pump or from the toilet tank into the bowl. Inspect the flapper on the check valve and the flapper on the flush valve.
Water pressure makes the unit kick on and off. It will turn on by itself if water is somehow draining back into the pump. It could be water leaking from the toilet tank into the bowl and from the bowl to the pump or the flapper on the check valve inside the discharge elbow may be stuck open or could be defective and allowing waste water to drain back into the pump, once it builds up enough water pressure inside the pump, the unit will kick on and off by itself.
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