IF THE MACHINE KEEPS SWITHCING ON AND OFF AND YOU HEAR WATER FLOODING BACK FROM THE DRAIN INTO THE SANIFLO THE FLAP TO PREVENT BACK FLOW INSIDE THE RUBBER CONNECTION TO THE DRAIN ON TOP OF THE BOX IS PERHAPS NOT CLOSING DUE TO MISS ALIGNMENT OR INTRUSION OF RUBBISH. COMPRESS THE RUBBER A FEW TIMES. THIS MAY FREE IT. IF NOT LET THE DRAIN FLUSH VIA THE NIPPLE (YOU MAY NEED TO PIERCE THE RUBBER INSIDE THE NIPPLE). INSERT A SUITABLE PIPE INTO THE NIPPLE TO TRANFER FLOW TO A BUCKET. UNDO CLAMP AT BOTTOM OF RUBBER AND CHECK FLAP INSIDE. REASSEMBLE
IF THIS DOESN'T FIX IT THE PROBLEM IS ELECTRICAL INSIDE THE BOX.
DAVYBT, February 2009