Troubleshooting steps
Check output circuit, verify components, test control board, contact service
Welding Equipment Codes
E-4 – Output Voltage Error
Output voltage error detected
Details
The welder output voltage is outside expected parameters.
Error typeerror
MeaningOutput voltage error
Typical causesFaulty output circuit, component failure, control board issue
SolutionsCheck output circuit, verify components, test control board, contact service
Severityhigh
Catalog references
Where this appears
MillerE-4
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Is welding still possible?
Welding may be unsafe. Have welder serviced before use.
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