I. Power Supply Issues
Symptom: Welding machine cannot start or indicator light is off
Cause: Damaged power switch, loose wiring, or unstable voltage
Solution: Check power cord connection, confirm voltage stability, replace switch if necessary.
II. Abnormal Welding Current
Symptom: Current too low or unstable
Cause: Cable too long, poor contact, or insufficient equipment power
Solution: Shorten cable length, clean joints, ensure power matching.
III. Mechanical Component Failure
Symptom: Adjustment handle stuck or moving iron core cannot move
Cause: Corrosion or wear of transmission mechanism, or foreign objects in slide rail
Solution: Clean and remove rust, replace worn parts, remove obstructions.
IV. Coil and Insulation Issues
Symptom: Coil short circuit or low insulation resistance
Cause: Moisture, overheating, or aging
Solution: Dry the coil, inspect and replace it.
V. Protection Device Triggering
Symptom: Fuse blows frequently
Cause: Short circuit or winding fault
Solution: Check wiring, repair windings.
