Warning W09 W12: water pump temperature exceeds the upper limit ; compressor temperature exceeds the upper limit
a) This failure means that “water pump temperature exceeds the upper limit” or “compressor temperature exceeds the upper limit”. It is very likely to be caused by the long-time high-energy laser emission of handpiece. This prompt will disappear automatically after a period of rest.
b) If this failure occurs very frequently (occurring after continuously working for 10 min), check the air outlet on instrument back and confirm whether the four fans operate normally (whether the all operate at a high speed). If they cannot operate normally, check the problem according to the contents of failure W08.
c) Should the fans operate normally, keep clicking “OK” key for five times after an alarm is given to access background directly; after that, enter “password 3” to view water pump temperature (default upper limit: 80 ℃) and compressor temperature (default upper limit: 70 ℃), judge the part that exceeds the upper limit and then replace the corresponding device.