I would suspect a bad connection in one of the wiring connectors causing a high resistance and making your amps go up. This seems to be a pretty common problem with these machines. Although I can’t pinpoint which one it may be but I have had that kind of problem before and I finally removed the problem wire from the connector and wires it direct. If you check your connectors, you might find one or more of the blades dark or oxidized which is a tell tale sign of high resistance. Don’t get discouraged, these machines will do a pretty good job of running if you don’t mind fixing the problems they have in the wiring. It’s just not as quality as the name brands. Hope this is helpful.