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This is a tricky one with all Sam4s registers including the ER180T because PEA is actually PER. The ER180t can’t display an “R” properly so it looks like and “A”. So the actual error is a which literally means
You have run out of paper or nearly run out. There is a little sensor in the front of the receipt printer, if there’s no paper in front of the sensor it will display the PER error until the paper roll is replaced
If you have a fresh paper roll in the ER180T and the paper is fed correctly through the front and you still get the PEA error you might have a busted sensor. The sensor can be cleaned with a lint free cloth. If that doesn’t work then the whole printer mechanism will need to be replaced. Depending on labour costs, it might be cheaper to get a whole new cash register with a 12 month warranty. Here’s a link to the ER-180T manual. It has a complete list of error codes including PEA / PER If you have any other questions please leave a comment below