What causes FAULT and 85 PSI indicators to flash at 1 cycle per second on Thermal Dynamics Welding System?
- JjessicamartinNov 22, 2025
If the FAULT indicator is flashing and the 85 PSI indicators are flashing at 1 cycle per second on your Thermal Dynamics Welding System, first check the upper O-Ring position on the torch head after removing the shield cup and correct it if necessary. If the issue persists, the torch start cartridge may be stuck; in this case, turn off the power supply, bleed down the system pressure, remove the shield cup, tip, and start cartridge, and check the start cartridge lower end fitting for free movement, replacing it if it does not move freely. Also, inspect the torch consumable parts for wear or faults and replace them if needed. Finally, consider the possibility of a shorted torch, which would necessitate replacing the torch and leads or returning them to an authorized service center for repai...












