Endress+Hauser Prothermo NMT81 - Page 94

Diagnostics and troubleshooting Prothermo NMT81
94 Endress+Hauser
Diagnostic
number
Short text Remedy instructions Status
signal
[from the
factory]
Diagnostic
behavior
[from the
factory]
109 Test resistance out of
range
Carry out sensor calibration S Warning
148 Waterbottom connection
faulty
Check sensor connection F Alarm
149 Waterbottom electronics
faulty
Deactivate water bottom sensor or
replace device.
F Alarm
844 Process value out of
specification
1. Check process value
2. Check application
3. Check sensor
S Warning
1)
Diagnostic of electronic
242 Firmware incompatible 1. Check software
2. Flash or change main
electronic module
F Alarm
252 Module incompatible 1. Check if correct electronic
modul is plugged
2. Replace electronic module
F Alarm
270 Main electronics
defective
Replace main electronics F Alarm
272 Main electronics faulty 1. Restart device
2. Contact service
F Alarm
273 Main electronics
defective
1. Transfer data or reset device
2. Contact service
F Alarm
281 Electronic initialization
active
Firmware update active, please
wait!
F Alarm
282 Data storage
inconsistent
1. Restart device
2. Contact service
F Alarm
283 Memory content
inconsistent
1. Transfer data or reset device
2. Contact service
F Alarm
287 Memory content
inconsistent
1. Restart device
2. Contact service
M Warning
311 Electronic failure Maintenance required!
1. Do not perform reset
2. Contact service
M Warning
331 Firmware update failed 1. Update firmware of device
2. Restart device
F Alarm
Diagnostic of configuration
410 Data transfer failed 1. Check connection
2. Retry data transfer
F Alarm
412 Processing download Download active, please wait C Warning
431 Trim required Carry out trim C Warning
437 Configuration
incompatible
1. Restart device
2. Contact service
F Alarm
438 Dataset different 1. Check data set file
2. Check device configuration
3. Up- and download new
configuration
M Warning
441 Current output out of
range
1. Check process
2. Check current output settings
S Warning
484 Failure mode simulation
active
Deactivate simulation C Alarm