a) 此故障代表“手柄治疗头温度超出上限”，仅在ready状态下进行检测。
b) 如果手柄ready状态下不制冷或温度升高，请参照 手柄不制冷解决故障。
c) 如果手柄能够制冷，此项检测极有可能是手柄长时间以高能量出光导致的。重新按下ready按键后，可以继续使用。
d) 如果手柄制冷，长按“W06”5次后进入后台，输入密码“78652818”后，显示温度和实际不一致，则为手柄温度传感器故障，需检查传感器线束是否松动，如无问题则需更换手柄控制板。
e) 如果明显感觉制冷速度不足，或2个手柄有明显差异，可能为制冷片达到使用寿命，器件老化受损；也有可能是制冷片安装存在问题。制冷片2面必须涂抹导热硅脂，且与铝件紧密贴合，不能有缝隙。
a) This failure means that “temperature of handpiece treatment head exceeds the upper limit”, and test should be implemented only under the ready state.
b) If handpiece refrigeration fails or temperature is increased under the ready state, resolve the failure by referring to Refrigeration Failure of Handpiece.c) If handpiece refrigeration works, the detection is very likely to be caused by the long-time high-energy laser emission. Continue the use after pressing ready key again.
d) If handpiece refrigeration works, long press “W06” for 5 times to enter the background; when the display temperature does not comply with the actuality after entering password “3”, it should be the failure of handpiece temperature sensor. Check whether the sensor wiring harness is loose; if no problem is discovered, replace the handpiece control board.
e) If it is obviously felt that the refrigeration speed is insufficient or there is a great difference between the two handpieces, the failure may be caused by the aging damage of TEC after reaching the service life. The failure may also be due to the installation problem of TEC. Apply the thermally conductive silicone grease to the two faces of TEC and closely cling it to the aluminum piece without any gap.