What to do if the Endress+Hauser Hart Proline Promag P 500 local display is dark and there are no output signals?
- AAaron BarnesAug 21, 2025
If the local display is dark and there are no output signals, check the following: * Ensure the supply voltage matches the nameplate value and correct it if necessary. * Verify the polarity of the supply voltage and correct if it's wrong. * Check the connection of the cables and terminals, ensuring good contact. * Confirm the terminals are correctly plugged into both the I/O and main electronics modules. * Inspect the connection between the main electronics module and the display module. * Check the electrode and coil current cable connections, correcting as needed. If these steps don't resolve the issue, the I/O or main electronics module may be defective, requiring a spare part.