A My controller is blinking. What gives? The NIU N1s’ main controller normally called ECU (hidden inside/behind the front panel) has an LED, and if it blinks, that’s a message 😉 Here are the blink codes: 1 Over-Voltage warning Battery voltage is higher than default value 2 Under-Voltage warning Battery voltage is lower than default value 3 Over-Current warning Instant current is higher than default value or Phase line short circuit 4 Locked-rotor warning Duration of Motor in locked-rotor status longer than default value Replace FOC controller 5 HALL failure Incorrect HALL input(Voltage) detected Replace Motor 6 MOSFET failure MOSFET … Continue reading My controller is blinking. What gives?