instructions of LED malfunction and alarm 0x21: abnormal current level£º indicator light flash(LOW level) 0x22: abnormal throttle level£º indicator light flash(MED level) 0x23: motor phase level£º indicator light flash(LOW+MED level) 0x24: Motor hall signal level£º indicator light flash(HIGH level) 0x25: brake level£º indicator light flash(LOW+HIGH levels) 0X30: Abnormal communication level£ºindicator light flash(LOW+MED+HIGH levels) remark£ºthe display shut down after one minute when abnomal code exit