Miller Multimatic 220 AC/DC - 7-4. Error Messages

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OM-281426 Page 46
7-4. Error Messages
Message Error Remedy
Overtemp−Please wait while the
welder cools down.
Internal temperature of welder has exceeded the
maximum limit.
Wait for unit to cool down. If the fan is not running,
contact Miller Electric Mfg. LLC service department.
Shorted trigger−Release 4−pin
trigger to clear error.
MIG gun or spool gun trigger is engaged on power
up.
Release 4−pin trigger to clear error.
MIG gun trigger is held during jog for more than 16
feet of wire.
Spool gun trigger is held during jog for more than 10
seconds.
MIG gun or spool gun trigger is engaged for more
than 1 second after the arc is broken.
After an overtemp error, the MIG or spool gun trig-
ger is held after the welder has completed cooling.
MIG gun or spool gun trigger is engaged while the
process is changed to Flux Cored or a MIG
process.
MIG gun or spool gun trigger lead voltage exceeds
9 volts caused by the electrode being shorted to the
trigger lead.
Fix or replace damaged gun.
MIG gun or spool gun trigger leads are shorted to-
gether.
Shorted trigger-Release trigger to
clear error.
The 14−pin trigger is engaged on power up.
Release the 14−pin trigger.
The 14−pin trigger is held during TIG preflow for
more than 15 seconds.
Shorted output-First remove
short, then pull trigger to clear
error.
The welding wire came into contact with the
workpiece while jogging wire.
Remove short and pull trigger, or wait 30 seconds to
clear error.
MIG gun or spool gun contact tip came into contact
with the workpiece while welding.
The weld voltage is less than 10 volts for more than
0.2 seconds while welding.
Output rectifier is damaged.
Contact Miller Electric Mfg. LLC service department
The secondary control board is damaged.
The primary control board is damaged.
Stuck electrode-Free stuck elec-
trode to clear error.
Stick welding electrode has become stuck in weld
puddle and turned output off.
Remove Stick welding electrode from workpiece
and output will turn back on after about one second.
Stuck electrode-Free tungsten to
clear error.
Tungsten electrode has become stuck in weld pud-
dle and turned output off.
Remove the tungsten from workpiece and output
will turn back on after about one second.
Tungsten has contacted workpiece for more than 5
seconds without starting an arc.
Motor error−Motor has drawn too
much current.
Too much pressure on pressure adjust knob. Reduce pressure on the pressure adjust knob.
The gun liner is obstructed. Clear obstruction or replace gun liner.
The gun contact tip is obstructed. Clear obstruction or replace contact tip.
The welding wire is entangled. Untangle welding wire.
The internal motor is damaged. Contact Miller Electric Mfg. LLC service depart-
ment.