My millermatic 211 autofed wont fed wire - Welding Tools

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This machine is an auto adjust for different voltages.

The front end of the circuity is a PMPS or pulse mode power supply. No matter the input, the output is the same.
Most all small appliances today are built around this technology. I bet a small IC on the circuit board has gone bad. A good electronics repair man could fix this or you can get the board from Miller.

Guessing you measured the power at the solenoid and therefore you have a voltmeter.
Disconnected the solenoid wiring and measure the Ohms across the coil of the solenoid.
You should read some relatively low resistance 200, 500, 5000.
Not meg-ohms.

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Millermatic® 211 MIG Welder - MillerWelds

the noise you hear is the relay for the wire feed,it means that your tension on the wire needs to be set,tighten it if it is too loose and loosen it if the roller on the feed is moving but the wire is not,also,make sure the wire moves easily in the handle,always keep your cords straight so they dont bind.

tooslow and probaly too close to work piece try turning heat down a little also make shure you have a good ground/ maybe angle your gun a little more

Hi:
By the description sounds like the trigger itself is the problem, have you try to bypass (bridge) the connection (disconnect the gun's plug from the machine and use a clip to bypass it at the machine's end) and see if the problem persists?
If the problem continues, then the problem would be the heat sensor.

Your Millermatic 175 has syncronize wire speed-voltage feature in order to reduce the wire speed first reduce your heat (voltage). Try again.

If this was useful to you please vote. thanks.

Your problem rely on the initial settings, your voltage is too high or your wire feed speed it's too slow. Compensate both, or just decrease you voltage.

I always tell my customers that the best machine for a body shop is a millermatic 212 if you have 220V available if not, go to a Millermatic 211 this is one is a dual voltage unit 110V/220V. if you can afford it buy a spool gun SG100 for all aluminum parts, the machine will cost you 999.00 and the spool gun 215.00. Best investment ever for your shop.