10-4. Troubleshooting - Miller XMT 450 CV Owner's Manual

10-4. Troubleshooting

Trouble
No weld output; unit completely
inoperative.
No weld output; meter display On.
Erratic or improper weld output.
No 24 volts AC output at Remote 14
receptacle.
Does not associate to another Ar-
cReach device.
OM-292663 Page 38
Place line disconnect switch in On position (see Section 5-9).
Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 5-9).
Check for proper input power connections (see Section 5-9).
Input voltage outside acceptable range of variation (see Section 5-8).
Check, repair, or replace remote control.
Unit overheated. Allow unit to cool with fan On (see Section 4-9).
Use proper size and type of weld cable (see Section 5-2).
Clean and tighten all weld connections.
Check for correct polarity.
Reset supplementary protector CB2 (see Section 5-6).
Check that Mode Switch is set to an "OUTPUT ON" mode.
Check owner's manual of the other device for correct method to associate the power source to the
other ArcReach device.
Remedy