250EX Amp Setting Changes??

[everlastsupport]

Unless someone miss wired the power switch it should be black and white for hots and green to ground for single phase. If you pop the cover, the wires going into the power switch should be white (closets to cover), red (middle) and black.

On the display, it is not updated when welding due to the HF and power going on. This is normal. And there is a few second delay before the amp display transfer back.

[CMB]

I wired up the black and white initially but the machine was DOA. I pulled the cover and checked to make sure there was power on both sides of the switch but I can't recall the order of the wires in the switch. I think they were red, white and then black but I have to check.

With the display it seems funny that when I break the arc the machine jumps to 103 every time. It's not a random number, it's the same number every time. Watching the display the amps would be the correct setting while welding but as soon as I released the switch (2T operation using the torch switch) it jumps to 103.

[CMB]

I resolved the issue around the wiring. Duncan had rewired the switch for three phase and never changed it back when he sold me the machine so that mystery is solved.

[tjabo]

Did that also resolve the consistently baseless number popping up too, or not?

[performance]

Turn your up and down slope off, and turn your start and end amps off. Make sure you are in 2T to use it. You have about a 3-4 second delay before the number returns to 0.

[CMB]

Tjabo, the machine was wired OK when I noticed the issue with the setting changing so it didn't have an impact on what I was seeing.

Mark, I'm pretty sure I had those settings turned all the way down. I'm out of town so I'll check when I get home. I do know that I had it in 2T mode.