Endress+Hauser Waterpilot FMX21, Operating Instructions Manual

Page: 74 / 144

Diagnostics and troubleshooting Waterpilot FMX21
74 Hauser
"M" messages
Code: M002
• Description: Sens. unknown
• Cause: Sensor module does not suit the device (electronic sensor nameplate). Device
continues measuring.
• Corrective measure: Contact Hauser Service
Code: M283
• Description: Memory content
• Cause:
• Cause as indicated for F283
• Correct measurement can continue as long as you do not need the peakhold indicator
function.
• Corrective measure: Perform a reset
Code: M431
• Description: Adjustment
• Cause: The adjustment performed would cause the nominal sensor range to be exceeded
or undershot.
• Corrective measure:
• Check the measuring range
• Check position adjustment
• Check the setting
Code: M434
• Description: Scaling
• Cause:
• Values for calibration (e.g. lower range value and upper range value) are too close
together.
• Lower range value and/or upper range value exceed or fall below the sensor range
limits.
• The sensor was replaced and the customer-specific configuration does not suit the
sensor module.
• Unsuitable download carried out.
• Corrective measure:
• Check the measuring range
• Check the setting
• Contact Hauser Service
Code: M438
• Description: Data set
• Cause:
• The supply voltage is disconnected when writing.
• An error occurred when writing.
• Corrective measure:
• Check the setting
• Restart the device
Code: M882
• Description: Input signal
• Cause: External measured value displays a warning status.
• Corrective measure:
• Check the bus
• Check the source device
• Check the setting
"C" messages
Code: C412
• Description: Backup in progress
• Cause: Downloading
• Corrective measure: Wait for download to complete