求翻译：每个设定温度值时，需进行PID自整定，摁住“Shift/AT”键五秒后，“RUN/AT”灯闪烁，即松开，自整定完毕，“RUN/AT”灯停止闪烁。是什么意思？

Temperature value for each setting, the need for a PID auto-tuning, press "Shift/AT" key for five seconds, the "RUN/AT" light flashes, release, auto-tuning is complete, the "RUN/AT" lamp stops blinking.