[Cause]
An abnormal alarm occurred during the welding process.
[Countermeasure]
Confirm the alarm message and refer to the manual of the welding equipment to take countermeasures. When the alarm information is "No Weld Detected" (no welding detected), although the welding valid signal is at ON, the built-in timer The welding result shows that the power supply voltage is ０ (zero). For the reason why the power supply voltage is ０, please check with the welding machine manufacturer and take countermeasures.