7890A GC not starting

Hello community,

Every back methode I try to start keeps hanging on: "Sequence Running/ Waiting for Injection" modus.

I also waited for a couple of hours and nothing did change.

Normally the colour & text doesnt change to "Sequence Running/ Waiting for Injection" and purple colour.

This problem is tied to all back methods.

I also tried to restore the back methods to previous versions but that didnt helped either.

Front methods are working without problems.

Thank you in advance for your help.

See picture below.

  • Hi RDP0314, 

    One thing to check is the injection settings.  This behavior is common when the GC is expecting a series of manual injections.  To check, click on the Instrument menu shown on your screen capture above and 'Select Injection Source' or similar.  The option should be at the top of the list.  Verify that GC ALS is selected as your injection source, and that the back inlet is selected.  Let us know how it turns out!  


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