Allen-Bradley 839E, User Manual, Page: 24 / 32

839E Solid-State Flow Sensors User Manual
22 Pub #10000004735 Ver 03, May 2012
Troubleshooting
Error and warning codes
If an error occurs in the electronics, the color of the status LED changes from green to red
and the background illumination of the digital display changes from white to red. A status
LED flashing red and green displays an error or warning code, as outlined below:
• E-code for errors
In the event of an error message, the measured value is unreliable.
• W-code for warnings
In the event of a warning, the measured value is still reliable.
Error Codes
Code Explanation
E011 Device configuration faulty
E012 Error in measurement or underrange/overrange
E013 Error at heating resistor
E015 Error in EEPROM
E019 Power supply has undervoltage/overvoltage
E020 Error in Flash
E021 Internal memory error
E022 USB power supply
E027 Characteristic does not suit medium
E042
Output current can no longer be generated. Possible cause:
analog output not connected or open circuit.