1. Electrical system problem
Abnormal power supply
Unstable voltage, poor line contact or blown fuse may cause the equipment to suddenly lose power.
Inspection: Use a multimeter to test the power supply voltage and observe whether the indicator light of the control box is normal.
Control circuit failure
Damage to the mainboard, drive module or sensor may cause program confusion or trigger the protection mechanism.
Phenomenon: Equipment alarm, garbled or no response on the display.

2. Mechanical component failure
Transducer (vibrator) failure
The transducer is damp, the ceramic piece is cracked or the line is aged, resulting in abnormal ultrasonic output.
Judgment: The vibration is weakened or accompanied by abnormal noise during operation.
Mold (welding head) wear or looseness
The mold gap is too large, the surface is worn or the installation is not firm, which affects the vibration transmission efficiency.
Treatment: Check the mold contact surface, recalibrate or replace the worn parts.
Transmission system failure
Belt wear, gear jamming or motor failure may cause operation jam or shutdown.

3. Overload or protection mechanism triggered
Long-term high-load operation
The equipment overheats and triggers the temperature control protection, or the current is too large to cause the fuse to blow.
Solution: Stop using, clean the dust on the heat dissipation port, and restart after cooling.
Material mismatch
The processing material is too thick or too hard, which exceeds the power range of the equipment, causing protection shutdown.
Suggestion: Adjust parameters or replace the appropriate mold.

4. Software or program error
Control system program disorder
Misoperation or electromagnetic interference causes parameter loss, and the equipment cannot execute normal processes.

Processing: Restart the device, restore factory settings or contact the manufacturer to upgrade the program.