Troubleshooting - Husky MIG140 Use And Care Manual

Troubleshooting

NOTE: When yellow tripped protection/alert indicator turns on, the possible causes are 1) tripped overheat protection; 2) short
circuit alert; 3) tripped overvoltage protection; 4) overcurrent alert; 5) MIG gun switch issue alert. Please refer to a qualified
electrician to check your welder.
Problem
Wire feed motor works
but no wire feeds.
Wire creates a bird's nest
during operation.
No arc while wire feeds.
Arc works but no wire
feeds.
Wire burns back to
contact tip.
Weak arc strength/non-
penetrating weld.
Difficult to start an arc.
Possible Cause
□
Insufficient pressure given to
the wire feed drive roll.
□
Incorrect drive roll size.
□
Damaged flux core gun or
damaged/blocked wire inlet
guide tube.
□
Clogged or damaged contact tip.
□
Too much pressure on the drive
roll.
□
Loose ground clamp connection.
□
Insufficient pressure on the wire
feed drive roll.
□
No wire left on the wire spool.
□
Wire feed speed is too low.
□
Wrong size contact tip.
□
Clogged or damaged contact tip.
□
Long or improper extension
cord.
□
Input power is too low.
□
Poor ground clamp, torch or
electrode holder connection.
□
Wrong size or worn contact tip.
□
Wrong welding wire size or type.
□
Welding amperage is low.
□
Clogged contact tip.
□
Rotate the pressure arm adjustment knob clockwise to
increase the pressure on drive roll. See "Operation
Instruction – Setting Up the Welding Wire" (page 11) for
more details.
□
Replace the drive roll with the correct size.
□
Replace the flux core gun.
□
Clean the wire inlet guide tube with compressed air or
replace the wire inlet guide tube.
□
Clean the contact tip or replace with a new one.
□
Rotate the pressure arm adjustment knob
counterclockwise to decrease the pressure on drive roll.
See "Operation Instruction – Setting Up the Welding Wire"
(page 11) for more details.
□
Check and make sure the ground clamp is well attached to
the workpiece.
□
Rotate the pressure arm adjustment knob clockwise to
increase the pressure on drive roll. See "Operation
Instruction – Setting Up the Welding Wire" (page 11) for
more details.
□
Check whether the wire spool is used up. Replace with a
new one if used up.
□ Increase wire feed speed by rotating wire feed adjustment
knob clockwise.
□
Replace with a correct size contact tip.
□
Clean the clogged tip with a tip cleaner.
□
Replace the damaged tip.
□
Use a proper extension cord.
□
Verify your welder's output voltage and current. Ask a
qualified electrician for help if necessary.
□
Check connection of ground cable, torch or electrode
holder and make sure they are well connected.
□
Replace with the correct size contact tip or replace with a
new contact tip.
□
Recommended welding wires are 0.030/0.035 in. flux core
welding wire.
□
Increase welding amperage.
□
Clean or replace contact tip.
14
Solution