SYMPTOM POSSIBLE
CAUSE
REMEDY
to clamp connection
Wrong size contact tip
Use proper tip
Low primary voltage
Have primary voltage checked by
electrician
Too long or improper extension
cord
See instruction under extension
cord use
Wrong type or size of wire
Check manual for proper wire size
or type
Wall receptacle improperly wired
Consult electrician
Wrong welding polarity
Change to proper polarity
Faulty gun assembly
Replace gun
No wire feed but arc works
Faulty wire speed switch
Replace wire speed switch
Faulty main circuit board
Replace main circuit board
No tension on drive roller
Adjust drive tension
Liner plugged
Replace liner
Faulty drive motor (extremely rare)
Replace drive motor
Wire birdnesting at drive roller
Too much tension on drive roller
Adjust drive tension (see manual)
Wrong size contact tip
Use correct size contact tip
Gun liner worn or damaged
Replace liner
Contact tip is clogged or damaged
Replace contact tip
Liner stretched or too long
Trim liner to proper length
Wire burns back to contact tip
Gun liner worn or damaged
Replace liner
Liner stretched or too long
Trim liner to proper length
Wrong size contact tip
Use correct size contact tip
Contact tip is clogged or damaged
Replace contact tip
Drive tension not set properly
See instruction on setting drive
tension
Gun nozzle arcs to work surface
Slag buildup inside nozzle or nozzle
shorted
Clean or replace nozzle as needed
Ground clamp or cable gets hot
Bad connection from cable to clamp
Tighten connection or replace cable
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