Fig. 20: Error code 255
No. Fault description Cause Remedy
255 Display:
Error code 255
Water change interval has been exceeded
n Empty and clean commercial dishwasher
or
n Adjust parameters as required [display 50]
Fig. 21: Error code 256
This alarm is displayed if the conductivity rises above the permitted maximum
value and the alarm delay time for the alarm has expired.
No. Fault description Cause Remedy
256 Display:
Error code 256
Measuring cell bore is blocked
Perform deep clean of wash tank
Measuring cell defective
Check measuring cell function, replace if necessary
Parameters not set correctly
Check the settings
Metering does not stop
n Check metering electronics Ü replace if necessary
n Coupling relay stuck/faulty Ü replace if necessary
Malfunctions and troubleshooting
47 MAN054003, Ver. 1-02.2024
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