Fig. 16: Error code 251
This alarm is displayed as soon as the tank temperature falls below the
permitted minimum value and the alarm delay time has expired.
No. Fault description Cause Remedy
251 Display:
Error code 251
Parameter limit value set
too low
n Adjust value [Display 46]
Note:
Where applicable, the choice of position of the measuring
cell is unsuitable, the temperature display does not match
the GGSM.
n GGSM defective
Measuring cell defective
Check measuring cell function, replace if necessary
Fig. 17: Error code 252
This alarm is displayed as soon as the tank temperature rises above the
permitted maximum value and the alarm delay time has expired.
No. Fault description Cause Remedy
252 Display:
Error code 252
Parameter limit value set
too high
n Adjust parameters [Display 47].
Note:
Where applicable, the choice of position of the measuring
cell is unsuitable, the temperature display does not match
the GGSM.
n GGSM defective.
Measuring cell defective
Check measuring cell function, replace if necessary
Malfunctions and troubleshooting
45 MAN054003, Ver. 1-02.2024
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