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Jun 2001
Error Codes and Internal Diagnostics
Agilent 6890 Gas Chromatograph Service Manual
Faults 850
Fault 214—Front detector flame out
If the electrometer is out of specification, the detector will never reach a ready
state.
❐ Check that the cable that connects the detector to the board is connected
properly.
❐ If the boards are connected properly but the electrometer is still out of
specification, the electrometer or detector board is broken.
Fault 214—Front detector flame out
Fault 215—Back detector flame out
Status message: Front det flame out or Back det flame out
This message appears when the FID is not able to ignite or if the flame goes
out during a run. During the ignition process or the run, the detector will try
to ignite the flame twice; if both attempts fail, the hydrogen, air, and ignitor
will shut off, and the error message will appear. The detector will be in a not
ready state.
Check the following:
❐ Make sure the hydrogen and air are turned on and that the flow rates are
high enough for the flame to ignite.
❐ Use an electronic leak detector to search for and correct leaks around
the detector column fitting.
❐ Check that you are using the correct jet for your column.
❐ Change the Lit Offset to 0.5 (the default value).
Fault 216—Front TCD filament open
Fault 217—Back TCD filament open
Status message: F TCD filament open or B TCD filament open
The TCD filament bridge voltage indicates that the filament resistance is too
high. The resistance may be too high because the filament is broken or worn
thin from use, or the wires from the TCD are not connected on the detector
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