To Next PageTo Next PageHow to increase low CV weld output on a Miller Big Blue 400P?
To address low CV weld output on your Miller Welding System, set the Ampere Range switch to the highest range. Increase the Voltage/Amperage Adjust Control setting.
Why does the engine on my Miller Welding System suddenly stop?
If the engine of your Miller Welding System suddenly stops, first check the oil level. The automatic shutdown system may stop the engine if the oil pressure is too low or the engine temperature is too high.
How to troubleshoot low weld output on a Miller Big Blue 400P Welding System?
If your Miller Welding System has low weld output, first check the engine speed and adjust it if necessary. Also, check fuses F1 and F2, and replace them if they are open.
What to do if there is no weld output or generator power output on my Miller Big Blue 400P?
If your Miller Welding System has no weld output or generator power output at AC receptacles, disconnect equipment from generator power receptacles during start-up. Check fuses F1 and F2, and replace them if open. Reset supplementary protector CB12.
Why won't the engine crank on my Miller Welding System?
If the engine of your Miller Welding System will not crank, check the battery and replace it if necessary. Ensure that the battery connections are secure and tight. Also, check if circuit breaker CB10 is open.
How to fix erratic weld output on a Miller Big Blue 400P Welding System?
To address erratic weld output in your Miller Welding System, start by checking and tightening all connections inside and outside the unit. Ensure the connection to the workpiece is clean and tight. Use dry, properly stored electrodes, and remove excessive coils from the weld cables.
What to do if there's no generator power at AC receptacles on my Miller Big Blue 400P Welding System?
If your Miller Welding System has no generator power output at AC receptacles but the weld output is okay, reset the receptacle supplementary protectors and the GFCI receptacle.
Why does my Miller Big Blue 400P engine start but stop when the switch is released?
If the engine of your Miller Welding System starts but stops when the Engine Control switch is released, check the oil level. The automatic shutdown system stops the engine if oil pressure is too low or engine temperature is too high.
Why is the weld output too high on my Miller Big Blue 400P Welding System?
If your Miller Welding System has high weld output, check the engine speed and adjust if necessary.
How to fix no remote fine amperage control on a Miller Welding System?
If your Miller Welding System has no remote fine amperage control, place the Amperage Adjust switch in the Remote position. Check and secure connections to Remote Amperage Adjust receptacle RC13. Reset supplementary protector CB11.
General| CC/CV | CC/CV |
|---|---|
| Open Circuit Voltage | 80V |
| Protection Class | IP23 |
| Type | Engine-Driven Welding Generator |
| Rated Output | 400A at 40V, 100% Duty Cycle |
| Welding Processes | Stick (SMAW), TIG (GTAW), MIG (GMAW), Flux-Cored (FCAW) |
