| 摘要 |
Among several problems associated with the prior art is the problem that if the gradient of the temperature increases existing during trouble is too steep, the memory media themselves become damaged during storage of the corresponding trouble information into the control apparatus itself and consequently, the trouble information cannot be saved. In order to solve the above problems, such configuration is adopted that makes it possible to monitor the internal temperature and ambient temperature of the control apparatus and to save the appropriate information in the memory media of the control apparatus if the difference between the above temperatures oversteps the required temperature range. Even if the temperature gradient is too steep, the required information can be saved in the memory media of the control apparatus.
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