Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer
Teledyne Analytical Instruments 218
10.1.1. 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 specific failures referenced by the warnings. In this case, it is
recommended that proper operation of power supplies (See Section 10.5.2), the relay board (See Section
10.5.6), 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 flashing the FAULT LED and
displaying the Warning message in the Param field along with the CLR button (press to clear Warning
message). The MSG button displays if there is more than one warning in queue or if you are in the TEST
menu and have not yet cleared the message. The following display/touchscreen examples provide an
illustration of each:
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.