Endress+Hauser CM14-AAK - Page 30

Troubleshooting CM14
30 Endress+Hauser
Diagnostics
code
Message text Description
F846 Param error
Faulty parameter checksum
Possible cause:
Firmware update
Remedy:
Reset parameters to factory defaults
F847 Couldn't save param Parameters could not be saved
F848 Calib AO1 Faulty calibration values for analog output 1
F849 Calib AO2 Faulty calibration values for analog output 2
F904 Process check
Process check system alarm.
No change in measurement signal for a long time.
Possible reasons
• Sensor dirty or in air
• No sensor inflow
• Sensor defective
• Software error
Remedy:
• Check measuring chain
• Inspect sensor
• Carry out software restart
Diagnostics
code
Message text Description
C107 Calib. active
Sensor calibration is active.
Remedy:
Wait for calibration
C154 No calib. data
Sensor data.
No calibration data present, factory settings will be used.
Remedy:
• Check calibration information of the sensor
• Calibrate cell constant
C850 Simu AO1 Simulation of analog output 1 is active
C851 Simu AO2 Simulation of analog output 2 is active
C853 Download act. Parameter transmission is active