I have a Agilent 6890N and i have a issue were the preset startup temp in my method changes from 55C o 300C when i start the run, does anyone no why this happens

I have a Agilent 68902N which we use for measuring perfume oil content. We have a standard method which we have been using for a long time but just recently we have had an issue were the required startup temperature of 55 degrees changes to 300 degrees when we start the testing run. Does anyone no why this happens and what i can do to correct it.

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