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Model GFC7000E Instruction Manual TROUBLESHOOTING & REPAIR PROCEDURES
04584 Rev A1 184
11.1.1. Interpreting WARNING Messages
The most common and/or serious instrument failures will result in a warning message being
displayed on the front panel. Table 11-1 lists warning messages, along with their meaning and
recommended corrective action.
It should be noted that if more than two or three warning messages occur at the same time, it is
often an indication that some fundamental analyzer sub-system (power supply, relay board,
motherboard) has failed rather than indication of the of the specific failures referenced by the
warnings. In this case, it is recommended that proper operation of power supplies (see Section
11.4.2), the relay board (see Section 11.4.5), and the A/D Board (see Section11.4.7.1) be
confirmed before addressing the specific warning messages.
The analyzer will alert the user that a Warning Message is active by displaying the keypad label
MSG on the Front Panel. In this case the Front panel display will look something like the
following:
The analyzer will also alert the user via the Serial I/O COM port(s) and cause the FAULT LED on
the front panel to blink.
To view or clear the various warning messages press:
SAMPLE WHEEL TEMP WARNING CO2 = XX.XX
TEST CAL MSG CLR SETUP
Make sure warning messages
are not due to
legitimate problems..
Press
CLR
to clear the
message currently being
Displayed.
If more than one warning is
active the next message will
take its place
Once the last warning has been
cleared, the analyzer returns to
SAMPLE
Mode
SAMPLE RANGE=500.00 PPM CO2 = XX.XX
< TST TST > CAL
MSG
CLR SETUP
SAMPLE WHEEL TEMP WARNING CO2 = XX.XX
< TST TST > CAL MSG CLR SETUP
TEST
deactivates Warning
Messages until New warning(s)
are activated
MSG
activates Warning
Messages.
<TST TST
> keys replaced with
TEST
key
Figure 11-1: Viewing and Clearing Warning Messages
NOTE: A failure of the analyzer’s CPU or mother board can result in any or all of the following
messages.
SAMPLE RANGE=500.0 PPM CO2 = 00.00
<TST TST> CAL MSG CLR SETUP