Agilent Technologies 6890 Series Service Manual page 556

850 Faults
Fault 200—Pneumatics shutdown: faulty pneumatics board
Status message: Pneu board FPGA
The pneumatics control board is unable to control the instrument's
pneumatics.
The pneumatics control board is not functioning properly and will need
to be replaced.
Fault 201—Pneumatics shutdown: faulty pneumatics board
Status message: Pneumatics board
The pneumatics control board is not functioning properly for a non-specific
reason.
The pneumatics control board will need to be replaced.
Fault 202—Hydrogen safety shutdown
Status message: Hydrogen shutdown
An inlet configured for hydrogen gas did not reach the pressure setpoint
within 2 minutes. Because hydrogen presents an explosion hazard, the
following occurred:The GC oven fan and heaters are turned off.
The oven flaps are fully opened.
Both pressure and flow controls are turned off and the control
parameters are flashing when viewed.
The small zone heaters for inlets and detectors are turned off and the
control parameters are flashing when viewed.
The warning beep continues until the [Clear] key on the keypad is
depressed.
The oven cannot be turned on unless the instrument is power failed. Turn
the GC power off and on again to restore operation.
Jun 2001
Error Codes and Internal Diagnostics
Agilent 6890 Gas Chromatograph Service Manual
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