Error Messages - Miller Multimatic 220 Owner's Manual

7-4.

Error Messages

Message
Overtemp-Please wait while the weld-
er cools down.
Shorted trigger-Release 4-pin trigger
to clear error.
Shorted trigger-Release trigger to
clear error.
Shorted output-First remove short,
then pull trigger to clear error.
Stuck electrode-Free stuck electrode
to clear error.
Stuck electrode-Free tungsten to clear
error.
Motor error-Motor has drawn too much
current.
Fan error-The fan is running too slow
or is damaged.
Thermal error-Primary thermistor
range error.
Thermal error-Secondary thermistor
range error.
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Complete Parts List is available at www.MillerWelds.com
Error
Internal temperature of welder has exceeded the
maximum limit.
MIG gun or spool gun trigger is engaged on
power up.
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
trigger is held after the unit has completed
cooling.
MIG gun or spool gun trigger is engaged while
the process is changed to Flux Core or MIG
process.
MIG gun or spool gun trigger lead voltage ex-
ceeds 9 volts caused by the electrode being
shorted to the trigger lead.
MIG gun or spool gun trigger leads are shorted
together.
The 14-pin trigger is engaged on power up.
The 14-pin trigger is held during TIG preflow for
more than 15 seconds.
The welding wire came into contact with the
workpiece while jogging wire.
MIG gun or spool gun contact tip came into con-
tact 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.
The secondary control board is damaged.
The primary control board is damaged.
Stick welding electrode has become stuck in
weld puddle and turned output off.
Tungsten electrode has become stuck in weld
puddle and turned output off.
Too much pressure on pressure adjust knob.
The gun liner is obstructed.
The gun contact tip is obstructed.
The welding wire is entangled.
The internal motor is damaged.
The primary control board is damaged.
The spool gun motor is damaged.
The fan blades are obstructed.
The fan wiring harness is disconnected.
The fan is damaged.
The primary control board is damaged.
The primary circuit thermistor is unplugged.
The primary circuit thermistor is reading too high
or too low for a valid temperature.
The primary control board is damaged.
The secondary circuit thermistor is unplugged.
Remedy
Wait for unit to cool down. If the fan is not run-
ning, contact Miller Electric Mfg. service dept.
Release 4-pin trigger to clear error.
Fix or replace damaged gun.
Release the 14-pin trigger.
Remove short and pull trigger, or wait 30 sec-
onds to clear error.
Contact Miller Electric Mfg. LLC service
department
Remove Stick welding electrode from workpiece
and output will turn back on after one second.
Remove the tungsten from workpiece and output
will turn back on after one second.
Reduce pressure on the pressure adjust knob.
Clear obstruction or replace gun liner.
Clear obstruction or replace contact tip.
Untangle welding wire.
Contact Miller Electric Mfg. LLC service dept.
Contact Miller Electric Mfg. LLC service dept.
Fix or replace damaged gun.
Clear obstruction from fan.
Contact Miller Electric Mfg. LLC service
department
Contact Miller Electric Mfg. LLC service
department
Contact Miller Electric Mfg. LLC service
department
OM-281426 Page 47