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Error Messages
Error messages on the control unit display indicate problems with the
operation of the analyzer. Use this section to see the types of problems
your error message indicates, then go to the "Diagnostic Checks" section
at the end of this chapter for help on how to perform diagnostic checks
to pinpoint the problem area. Note that you should always perform the
easiest checks first. Only perform the more difficult checks if the easiest
checks don't locate the problem.
Message
Cell is Over Temp
Excessive Cal Error
Memory is Corrupted
Span Gas Range Error
This message could indicate one of the following problems:
Indicates that the sensor temperature is 30°C or more over its cor-
rect operating temperature. The software shuts off the furnace until
the temperature returns to a normal operating range.
If this message soon goes away, it indicates that the temperature
has returned to an acceptable range. If there is a problem with the
sensor temperature control system, you will see another error mes-
sage after this message appears.
If a primary calibration cannot correct the sensor temperature within
the software's allowable limits, this message displays to indicate the
primary calibration has failed. This message could indicate one of
the following problems:
•
Calibration gas setup problem
•
Process pressure incorrectly entered
•
Failed cell
•
Leak or plug in plumbing
Indicates that the control unit's internal EEPROM memory has been
corrupted, or a significantly new version of software has been installed
in the control unit. Under these conditions, the software will reprogram
the EEPROM with the factory default values. You can acknowledge
this error message by setting or reading any user programmable value,
and this will clear the message from the display. This message will not
clear by removing and restoring power to the unit.
If you receive this message, you should reset your control unit to
the values required for your application, including Setup key param-
eters, Calibrate key parameters, etc...
Occurs if the calibration span gas does not read within the soft-
ware's allowable limits. Once this error occurs, calibration of the
system is aborted.
•
Calibration gas setup problem
•
Process pressure incorrectly entered
•
Failed cell
•
Cell wiring reversed (Cell + and Cell - wires)
•
Leak in plumbing
•
Plugged plumbing
Explanation
Maintenance and Troubleshooting | 6-3
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Table of Contents
Troubleshooting
