If this happens during a polishing cycle, first try pressing the control knob and rotating it clockwise to start a new polishing cycle. If the problem persists, try the following:
1. Check the nebulizer unit to see if it is installed properly.
2. Make sure the nebulizer is fully seated in its socket.
3. Check if the reservoir is empty. If this is the case, make sure that the reservoir is full and start a new polishing cycle to see if the problem has been solved.
In case that neither of the above can solve the issue, try replacing the nebulizer with a new one. If the second nebulizer works, it is likely the contact between the foam and nebulizer membrane on the faulty nebulizer is not perfect.
To improve this contact we recommend disassembling the Nebulizer and reversing the foam. Please see the video below to learn this process.