How to fix F4.2 fault message on Candela pro series devices
First, we need to understand the causes of this fault F4.2 which is mainly because High voltage power supply communications time-out.
Now to the fix, how do we fix this problem easily?
There’s mainly two solutions for this problem:
- Turn off the laser system for 30 seconds and then restart the laser system
- If problem persists, contact Laser-Gulf service representative for system servicing