.
A complete Parts List is available at www.MillerWelds.com
OM-270536 Page 67
12-3. Troubleshooting Table
Trouble
Remedy
No weld output; unit completely
inoperative.
Place line disconnect switch in On position (see Section 5-8 or 5-9).
Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 5-8 or 5-9).
Check for proper input power connections (see Section 5-8 or 5-9).
No weld output; meter display On.
If using remote control, be sure correct process is enabled to provide output control at Remote 14
receptacle (see Section 5-10 as applicable).
Input voltage outside acceptable range of variation (see Section 5-6).
Check, repair, or replace remote control.
Unit overheated. Allow unit to cool with fan On (see Section 4-5).
Erratic or improper weld output.
Use proper size and type of weld cable (see Section 5-3).
Clean and tighten all weld connections (see Section 12-1).
Fan not operating.
Check for and remove anything blocking fan movement.
Have Factory Authorized Service Agent check fan motor.
Wandering arc.
Use proper size tungsten (see Section 16).
Use properly prepared tungsten (see Section 16).
Reduce gas flow rate.
Tungsten electrode oxidizing and not re-
maining bright after conclusion of weld.
Shield weld zone from drafts.
Increase postflow time.
Check and tighten all gas fittings (see Section 12-1A).
Water in torch. Refer to torch manual.
Blank Display.
Verify Power to machine.
A software update may be required (see Section 5-12, Software Updates). Contact factory if display re-
mains blank after a software update is performed.
Error message [ERR] [LOG] is dis-
played.
Contact a Factory Authorized Service Agent for an explanation of the error code.
Latching Errors see Section 12-2.
Contact a Factory Authorized Service Agent if error does not clear or happens frequently.
Error message [SEE] [O.M.] is dis-
played.
Contact a Factory Authorized Service Agent.
Tech Menu (See Section 11)
[SERL][NUM] is selected, and serial
number displayed does not match serial
number of machine.
Contact a Factory Authorized Service Agent.
Error message [UN S] [HORT] / [OUTP]
[UT] is displayed.
Contact a Factory Authorized Service Agent if display shows after weld output connections have been
verified as not having a short.
Error message [SOFT] [WARE] [NOT]
[VALD] is displayed.
Contact a Factory Authorized Service Agent if display shows after a software update is performed.
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