Diagnostics and troubleshooting
Liquiline CM44P
136
Hauser
12
Diagnostics and troubleshooting
12.1 General troubleshooting
The transmitter continuously monitors its functions itself.
If a diagnostic message occurs, the display alternates between the diagnostic message and
the measured value in the measuring mode.
The color of the display background changes to red if a diagnostic message for error
category "F" occurs.
12.1.1 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 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"(→ 139) in these Operating Instructions. 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 local display is faulty or you encounter
other problems, search for the faults under "Process errors without messages" (→
Operating Instructions Memosens, BA01245C) or "Device-specific errors"
(→ 136).
Follow the recommended measures.
4. Contact the Service Department if you cannot rectify the error yourself, citing only
the error number.
12.1.2 Process errors without messages
Operating Instructions "Memosens", BA01245C
12.1.3 Device-specific errors
Problem
Possible cause
Tests and/or remedial measures
Dark display
No supply voltage
‣
Check if supply voltage applied.
Display connector
plugged in incorrectly
‣
Check. Must be in RJ45 socket on base module.
Base module defective
‣
Replace base module.
Values appear on display but:
• Display does not change
and/or
• Device cannot be operated
Module not wired
correctly
‣
Check modules and wiring.
Impermissible operating
system condition
‣
Switch off device and switch it on again.
Implausible measured values Inputs defective
‣
First perform tests and take measures as
outlined in "Process-specific errors" section.
Measuring input test:
‣
Connect the Memocheck Sim CYP03D to the
input and use it to check the function of the
input.
