A. Press the stop\/reset key first, and then press the POWER key to start the machine.
B. Press the POWER key and hold on, release the stop\/reset key, and then double-click the stop\/reset key.
C. Release the POWER key and stop\/reset key at the same time, and then enter the maintenance state.
D. When the power light turns green, press the stop\/reset key to select the setting function
E, press 4 times stop\/reset warning light out, press the power button once OK!!