Compatible microswitch for the Sanichasse
The microswitch is the part that tells your Sanichasse when to start and stop. As water comes in, it pushes up the rubber membrane, the membrane presses the switch, and the motor runs until the water has been pumped away. When the switch wears out, the contacts stick or stop clicking, and the unit starts late, won’t start at all, or keeps running.
This is a compatible replacement switch supplied by Doctor Spares. It is not made by Saniflo. It is the same size and fitting as the original and is rated for the job.
Signs your Sanichasse microswitch has failed
- The unit doesn’t start when water comes in, or starts only after a delay
- Water backs up into the shower tray, bath or basin before the pump starts
- The motor keeps running after the water has gone
- The unit clicks on and off by itself
- The old switch feels stiff or no longer clicks when pressed
Specification
- Type: microswitch (also called a float switch or pressure switch)
- Voltage: 240V
- Terminals: spade
- Condition: new
Which units does it fit?
The same switch is used across the range, so it also fits the Saniflo Sanibroyeur, Sanitop, Saniplus, Sanipro, Sanipro XR, Sanivite, Sanislim, Sanishower, Sanibest, Sanipack, Saniwall, Sanispeed, Saniaccess and Traymatic, as well as the Grundfos (switch 463) and Broysan Planus. If your old switch looks different, contact us before ordering.
Change the membrane at the same time
The membrane presses the switch, so a stiff, split or limescaled membrane gives the same symptoms as a worn switch. If yours is more than a few years old, replace both together – the unit will then switch on and off almost immediately. See our macerator membranes.
Fitting
Unplug the unit before you start. The switch sits in the control box on top of the motor, above the membrane. Note which wire goes on which terminal, swap the switch, and put the wires back the same way. Most people do it in 15–20 minutes with a screwdriver. If you are not confident working with mains electrics, use a qualified engineer.
More help
- Saniflo microswitch problems – won’t start, keeps running or turns on by itself
- How a Saniflo microswitch works
- Saniflo microswitch replacement guide
- Saniflo problems and troubleshooting
