How to fix F15.1 fault message on Candela pro series devices

First, we need to understand the causes of this fault F15.1 which is mainly because the Low transmission; it may be caused by:

  • Dirty or damaged slider attachment window or handpiece window.
  • Incorrect windows are installed.
  • Delivery system is worn.
  • A slider attachment is not installed.


Now to the fix, how do we fix this problem easily?

  • • Clean or replace the handpiece window.
  • • Clean or replace the slider attachment window.
  • • Try another slider attachment (the same size, if available). If this slider attachment works, contact a Candela Service Representative to replace the faulty slider attachment.
  • Replace the fiber cable.
  • If problem persists, contact Laser-Gulf service representative for system servicing.