Siemens SITRANS LR500 Series - Fault Codes and Corrective Actions

11.5 Fault codes and corrective actions
11.5.1
Fault codes and corrective actions
ID Symbols Message Cause/action
A0
Event counter 1
N
umber over‐
runs above
threshold
Maintenance
alarm
The number of overruns of the process value (set in parameters "Upper limit"
and "Monitored value") has reached the threshold.
Reset and acknowledge event counter.
Check process conditions.
Check limit monitoring and event counter settings.

A1
Event counter 1
N
umber under‐
runs above
threshold
Process value
alarm
The number of underruns of the process value (set in parameters "Lower
limit" and "Monitored value") has reached the threshold.
Reset and acknowledge event counter.
Check process conditions.
Check limit monitoring and event counter settings.
A2
Event counter 1
N
umber under‐
runs above
threshold
Maintenance re‐
quired
The number of underruns of the process value (set in parameters "Lower
limit" and "Monitored value") has reached the threshold.
Reset and acknowledge event counter.
Check process conditions.
Check limit monitoring and event counter settings.
A3
Event counter 1
N
umber under‐
runs above
threshold
Maintenance
alarm
The number of underruns of the process value (set in parameters "Lower
limit" and "Monitored value") has reached the threshold.
Reset and acknowledge event counter.
Check process conditions.
Check limit monitoring and event counter settings.
A4
Event counter 2
N
umber over‐
runs above
threshold
Process value
alarm
The number of overruns of the process value (set in parameters "Upper limit"
and "Monitored value") has reached the threshold.
Reset and acknowledge event counter.
Check process conditions.
Check limit monitoring and event counter settings.
A6
Event counter 2
N
umber over‐
runs above
threshold
Maintenance re‐
quired
The number of overruns of the process value (set in parameters "Upper limit"
and "Monitored value") has reached the threshold.
Reset and acknowledge event counter.
Check process conditions.
Check limit monitoring and event counter settings.
A7
Event counter 2
N
umber over‐
runs above
threshold
Maintenance
alarm
The number of overruns of the process value (set in parameters "Upper limit"
and "Monitored value") has reached the threshold.
Reset and acknowledge event counter.
Check process conditions.
Check limit monitoring and event counter settings.
Diagnostics and troubleshooting
11.5Fault codes and corrective actions
SITRANS LR500 series with mA/HART
Operating Instructions, 03/2024, A5E51099898-AA 159