4. troubleshooting – Miller Electric XMT 400 User Manual
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6-4. Troubleshooting
Trouble
Remedy
No weld output; unit completely inop-
erative
Place line disconnect switch in On position (see Section 4-9).
erative.
Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 4-9).
Check for proper input power connections (see Section 4-9).
No weld output; meter display On.
If using remote control, be sure Mode Selector switch is in a position that provides output control at
Remote 14 receptacle.
Check, repair, or replace remote control.
Unit overheated. Allow unit to cool with fan On (see Section 4-2).
Erratic or improper weld output.
Use proper size and type of weld cable (see Section 4-6).
Clean and tighten all weld connections.
No 110 volts ac output at duplex recep-
tacle, Remote 14 receptacle.
Reset circuit breaker CB1.
No 24 volts ac output at Remote 14 re-
ceptacle.
Reset circuit breaker CB2.