You may have to switch the polarity from positive to negative. The last guy may have welded with other wire.

 

Is that open circuit voltage or measured under load? Also is it measured on the inside of the machine or at the stinger? You may have a voltage drop from bad connections if measured at the working end. I know the gun is attached to a stack of insulated connections that used to heat up and melt. It was also double nutted, so it had to be disassembled to be tightened. The feed motor was also run off that connection. They have a pretty helpful techline you can call as well.

 

According to the manual the voltage could be as low as 16.5 volts. As mentioned, was that under load. Also as mentioned polarity. What size liner is in your gun and size wire are you using. Gas or flux core? Wire tension?

 

It's running in DCEN with flux core wire 0.35 the liner is a brand new HTP liner in 0.35 size. The voltage was measured under load at the point where you swap from DCEN to DCEP. I appreciate the help.

 

Does it run on any other voltage settings? If everything else is good including the drive rolls, tip and tension, it may be the circuit board.

 

Is the wire old and have **** all over it?

Do you have too much wire tension?

Do you have the correct size drive roll? correct size tip?

Are you trying to push it out of a 15' gun with .023/.025 wire?

 

Is the wire old and have **** all over it?
It's brand new lincoln innershield NR-211-MP

Do you have too much wire tension?
The wire tension is set to 3 as the manual says it should be. However I've tried everything from 1-4

Do you have the correct size drive roll? correct size tip?
Yep.

Are you trying to push it out of a 15' gun with .023/.025 wire?
10' Gun.

Does it run on any other voltage settings? If everything else is good including the drive rolls, tip and tension, it may be the circuit board.
None of the settings work. They all have the same "stutter".

 

Have you tried to just check the wire speed at full speed setting? It should be some where close to about 500 inches per minute. In case you need to know how to do this use a stop watch and adjust the wire speed at full setting.Pull the trigger for 6 second. Measure the length then multiply by 10 to see what it would be for a minute.

 

Flux-core wire can sometimes weld odd. if you get a fair arc but you can see it pulse. Try slowing the wire speed down. Also change your stick out and arc length when welding. Use the chart on the door to set up the welder. If your line power is a little low, you will have to slow the wire speed down to get the arc to stabilize. Wire speed controls the amount of current in the arc. The wire size also effects the current. A 15 amp wall circuit or long small extension cord may not like welding with 035 wire. May have to switch to 030 or get a 10 gauge cord and power off a 25 or 30 amp circuit..
What you are trying to do. can draw over 25 amp from your wall plug.