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Justin ShortSep 2, 2025
What does M8 Short mean on a Nilfisk-Advance Scrubber?
- TTiffany Freeman MDSep 2, 2025
The most likely cause of M8 Short is a loose wire at the pump touching the other terminal. Swap the pump wires (pump 1 for 2) according to the color codes. If the controller thinks the same pump is faulty, then you know the short is in the wires. If the controller thinks the other pump is faulty, then you know that one of them is faulty.