Siemens LMV 5 Series, Technical Instructions, Page: 264 / 374

Error
Code Diag.
Code
Device Display Meaning for the LMV5x System Corrective Action
07
O2 Value in
Operation too
high
O2 MaxValue or O2 MaxCurve was exceeded
1) Check mounting of O2 sensor. Ensure no air is
entering the stack upstream of the sensor.
2) Verify that the O2 level in the stack has not
exceeded the maximum value set by
O2 MaxValue or
the O2 value of the ratio control curve.
08
O2 - Parameter
points of curve
undefined
The curves for minimum / maximum O2 values are incomplete
or no adaption has yet been carried out to determine the Tau
values
1) Check O2 min (guard) curve to ensure all points
have a value.
2) If parameter
Type O2 MaxValue is set for O2
MaxCurve, ensure all points on ratio control curve have
a valid O2 value.
09
Testing period for
minimum O2
values not
defined
No value has been specified for the testing period (parameter
Time O2 Alarm)
Enter a valid value for parameter Time O2 Alarm
0A
Internal Fault
Basic Unit
-
1) If fault occurs sporadically, reduce electrical noise.
2) If fault occurs continuously, replace LMV5.
BA 01
O2 Sensor Test
aborted
O2 sensor test was not successful. E.g. reset of O2 module
during probe test 1) If fault occurs sporadically, reduce electrical noise.
2) If fault occurs continuously, replace PLL5..
BB 00
Service interval
reached for O2
sensor test
The O2 trim control is removed and the system moves along
the set ratio control curves
Fault occurs because the time set in parameter
O2SensServTim has elapsed. Carry out maintenance
or replace O2 sensor.
BE Any #
Invalid parameterization of O2 operating mode / flue gas
recirculation sensor / COx monitoring
BE 00
O2 mode with
FGR is not
possible with
selected temp.
sensor
An error occurred in connection with the O2 trim control / O2
alarm and flue gas recirculation functionality
BF Any #
O2 trim control
automatically
deactivated
Fault occurred in connection with O2 trim control or with the O2
monitor. It led to automatic deactivation of O2 trim control or
the O2 monitor See previous error code in fault history (typically B5
error codes). This will detail the reason for the
automatic deactivation.
Fault with Base Unit (LMV5) or Oxygen Sensor (QGO2..)
B5
Set O2 mode ( OptgMode ) to O2 Alarm or O2 Control,
or set flue gas recirculation temp sensor ( FGR-sensor )
to X60
LMV5..
Section 7 Page 56 SCC Inc.
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