What to do if FAULT and 75 PSI indicators are flashing on my Thermal Dynamics CUTMASTER A120 Welding System?
- MMark MartinezAug 22, 2025
If the FAULT and 75 PSI indicators are flashing, it could be due to several reasons. First, the start signal might be active when the ON/OFF switch is turned on. In this case, release the START signal source. This can happen if the hand torch or pendant switch is held closed, or if the CNC START signal is active low. Another potential cause is a problem in the torch and leads switch circuit, which would require replacing the torch and leads or returning the unit to an authorized service center.