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The torch is damaged.
Check and replace if
necessary.
The groove on the feed
roll does not
correspond to the
welding wire diameter.
Put the correct roll.
Bad quality of the wire.
Check and replace if
necessary.
The liner in the torch is
unclean or damaged.
Check and replace if
necessary
Spool brake is badly
configured.
Adjust it according to this
instruction manual.
Arc or short circuit
between the hose
and the nozzle
Glued spatter inside the
gas nozzle.
Remove the spatter.
Unstable arc
Incorrect diameter of
the nozzle or too worn
out or damaged nozzle.
Change the nozzle.
Inadequate
supply of a
protective gas,
pores in the weld
Poorly set the amount
of supplied gas.
Set the correct amount
as described in this
instruction manual.
Reducing valve on the
bottle is dirty
Check and replace if
necessary.
The torch or gas hoses
are dirty
Check and replace if
necessary.
Protective gas is blown
away by draft.
Stop the draft
Bad welding
power
Missing phase.
Try to connect the
machine to a different
outlet. Check the power
supply cable and circuit
breaker.
Poor grounding.
Ensure the best
connection between the
work piece and the
earthling cable / clamps
of the machine.
The grounding cable is
poorly attached to the
connector on the
machine.
Tighten the earthling
cable in the connector on
the machine.
Torch damaged
Check and replace if
necessary.