I have a maxstar 200 sd and a dynasty 200 dx and I have installed a 220 outlet in my garage. it is the style of outlet that a lot of dryers use - 4 pin. when i plug in either welder and turn them on they make a weird noise buzzing type, and the number -2 flashes on the display. I have already toasted one power inverter. I am not sure what is going on
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