Endress+Hauser NRF81 - Diagnostics and troubleshooting; General Troubleshooting and Local Diagnostics

Diagnostics and troubleshooting Tankside Monitor NRF81
84 Endress+Hauser
11 Diagnostics and troubleshooting
11.1 General trouble shooting
11.1.1 General errors
Error Possible cause Remedial action
Device does not respond. Supply voltage not connected. Connect the correct voltage.
The cables do not contact the
terminals properly.
Ensure electrical contact between the
cable and the terminal.
Values on the display
invisible
The plug of the display cable is not
connected correctly.
Connect the plug correctly.
Display is defective. Replace display.
Display contrast too low. Set Setup → Advanced setup → Display
→ Contrast display to a value ≥ 60 %.
"Communication error" is
indicated on the display when
starting the device or
connecting the display
Electromagnetic interference Check grounding of the device.
Broken display cable or display plug. Exchange display.
CDI communication does not
work.
Wrong setting of the COM port on
the computer.
Check the setting of the COM port on
the computer (e.g. FieldCare) and
change it if necessary.
Device measures incorrectly. Parametrization error Check and adjust parameterization.