Liquiline CM442/CM444/CM448 Diagnostics and troubleshooting
Endress+Hauser 119
11 Diagnostics and troubleshooting
The transmitter continuously monitors its own functions.
If a diagnostics message occurs, the display alternates between the diagnostics message and the
measured value in the measuring mode.
The color of the display background changes to red if a diagnostics message for error category
"F" occurs.
11.1 General troubleshooting
11.1.1 Troubleshooting
A diagnostic message appears on the display or via the fieldbus, measured values are not
plausible, or you identify a fault.
1. See the Diagnostics menu for the details on the diagnostic message.
Follow the instructions to rectify the problem.
2. If this does not help: Search for the diagnostic message under "Overview of diagnostic
information" (→ ä 124) in this manual. Use the message number as a search criterion.
Ignore the letters indicating the Namur error category.
Follow the troubleshooting instructions provided in the last column of the error tables.
3. If the measured values are implausible, the onsite display is faulty or you encounter other
problems, search for the faults under "Process errors without messages" or "Device-specific
errors".
Follow the recommended measures.
4. Contact the Service Department if you cannot rectify the error yourself. Only cite the error
number.
11.1.2 Process errors without messages
See Operating Instructions for "Memosens", BA01245C
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