Troubleshooting steps
Check output circuit, verify components, test control system
Welding Equipment Codes
ERR-04 – Output Fault
Output circuit fault detected
Details
A fault has been detected in the welder output circuit.
Error typeerror
MeaningOutput fault
Typical causesOutput circuit failure, component fault, control issue
SolutionsCheck output circuit, verify components, test control system
Severityhigh
Catalog references
Where this appears
Lincoln ElectricERR-04
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FAQ
Common questions
Can I continue welding?
Not recommended. Have output circuit checked before resuming.
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