Warning W08

a) 此故障代表“水箱温度超出上下限”，极有可能是手柄长时间以高能量出光导致的。此提示会在水箱温度恢复正常后自动消失。

b) 如果该故障提示很容易出现（持续工作1h以内就会出现），则考虑为仪器故障。

c) 首先查看水质检测板显示水温，如果未出现温度跳变现象，则排除温度传感器接触不良问题，否则需检查温度传感器或更换水质检测板。

d) 则此时需要判断是水箱温度过高、低所致。在该报警弹出时，连续单击五次以上“OK”键直接访问后台，然后输入“密码78652818”查看水温，如果此时水温≥35℃，则判断超出上限；如果此时水温≤5℃，则判断超出下限。

e) 对仪器重新上电，进入工作界面，“ready”下，查看压缩机是否运转。如果压缩机不运转，则根据“电气部分说明”检查压缩机供电是否正常，在“ready”情况下，主机主控板会控制继电器B吸合，给压缩机供电。

f) “ready”下，如果风扇不运转，则根据主机风扇在ready状态下止转进行检测维修。
g) 仪器断电，打开仪器前维修窗口，拔下水质检测板接插件P2上面的线束。使用直流电源输出24V，接到线束上面的5、6端子，如果听到“啪”的一声，则水路电控阀正常，将线束重新插在P2接口上。否则为水路电控阀故障，检查非断线故障情况下，需要更换整个冷水机。

h) 如果电控阀正常，水温超出下限，则需更换为水质监测板。

i) 如果电控阀正常，水温超出上限，在水温处于20-25℃（水质板显示值）时，使用万用表检查P2.5、P2.6之间电压是否为DC24V，如果不是，则需更换水质检测板。如果是，则下运行仪器10-20分钟，不出光。然后“standy”后通过“密码3”查看水温，如果水温为15±5℃，则判断水路能够制冷，制冷量不足，需要更换整个冷水机（或请专业人员补充制冷剂R134A）。

a) This failure means that “temperature of water tank exceeds the scope”. It is very likely to be caused by the long-time high-energy laser emission. The prompt will disappear automatically after water tank temperature is recovered.

b) If the failure prompt occurs very frequently (occurring after continuously working for 1 h), the failure may be ascribed to the instrument.

c) View the water temperature displayed on the water quality testing board. Where no temperature jump phenomenon occurs, exclude the poor contact of temperature sensor; otherwise, check the temperature sensor or replace water quality testing board.

d) At this time, judge whether it is caused by the too high or low temperature of water tank. When this alarm pops up, keep clicking the “OK” key for more than five times to access the background directly and then input “password 3” to view the water temperature. If water temperature is ≥35 ℃ at this time, judge whether water temperature exceeds the upper limit; if water temperature is ≤5℃, judge whether water temperature water temperature exceeds the lower limit.

e) Power on the instrument again, to enter working interface. Under the “ready” state, view whether compressor operates. If the compressor does not operate, check whether the compressor power supply is normal according to the “electrical specification”. Under the “ready” state, main console control board will control relay B actuation to supply power to the compressor.

f) If fan does not operate under the “ready” state, make maintenance repair according to Rotation Stop of Main Console Fan in the Ready State.

g) Power off the instrument, open the front maintenance window of instrument and pluck off the wiring harness on connector P2 of water quality testing board. Output 24 V with the DC power supply and connect to the 5 and 6 terminals on wiring harness. If the sound of “pop” is heard, the water circuit electric control valve should be normal; insert the wiring harness onto the P2 interface again. Otherwise, it should be the failure of water circuit electric control valve. If confirming it is not the failure of broken line, replace the whole water chiller.

h) If the electric control valve is normal but water temperature exceeds the lower limit, replace the water quality testing board.

i) If the electric control valve is normal but water temperature exceeds the upper limit (water temperature is within the range of 20-25 ℃ (displayed value of water quality board), use a multimeter to check whether voltage between P2.5 and P2.6 is DC 24 V: If not, replace the water quality testing board; if so, operate the instrument for 10-20 min, without laser emission. Then, after switching to the “standby” state, view water temperature through “password 3”. If the water temperature is 15±5 ℃, judge water circuit refrigeration is normal. If the refrigerating capacity is insufficient, replace the whole water chiller (or entrust the professional personnel to supplement the refrigerant R134A).

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