1. Open RDWorks.
2. Access “Vendor param” and check that “Water Protect” is ticked (as shown).

If the box is ticked, unplug the line to the WP port on the laser control terminal.

• If the laser becomes erratic and the control panel displays "water error” or “cooler error”, the water protection sensor is short-circuited or the water protection system has a wiring problem; Replace the faulty one with a new, identical one as needed.
• If the laser still fires normally with the line to the WP port removed and the control panel displays no error code, then the mainboard is faulty. Replace with a new, identical one.