Agilent Technologies Quaternary Pump 1100 Series - Manual (Page 47)

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Troubleshooting and Test Functions
Error Messages
Error Messages
Error messages are displayed in the user interface when an electronic,
mechanical, or hydraulic (flow path) failure occurs which requires attention
before the analysis can be continued (for example, repair, frit exchange or
exchange of consumables required). In the event of such a failure, the red
status indicator at the front of the quaternary pump is switched on, and an
entry is written into the instrument logbook.