7890B Agilent GC Autosampler Issue

This happens the first time I start a sequence, every time. After that, the sequence completes without any errors.

The plunger gets stuck in the down position, in the extract vial on the carousel. 

I see an error that reads the following:

         ALS Failure State: Preparing Samples

         ALS Failure Code 245: Autoinjector front tower plunger error.

I then select "Retry", the plunger is removed, the sample is put back in the tray, then the sequence restarts, the plunger does its thing and injects the sample.

No more issues for the day, until I start the whole process over the next day. 

Why does this only happen on the first sample of the day?

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  • hello. 

    i faced this problem before

    it is so random

    it is happens only with begining of sequence 

    mostly in vial wash

    it is not a hardware problem because the autosampler then continues the other samples  normally 

    try to restart your GC

    make a new instruments configuration

    and maybe you will need to update the firmware 

Reply
  • hello. 

    i faced this problem before

    it is so random

    it is happens only with begining of sequence 

    mostly in vial wash

    it is not a hardware problem because the autosampler then continues the other samples  normally 

    try to restart your GC

    make a new instruments configuration

    and maybe you will need to update the firmware 

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