9. Other information
– General
Page 122
105204
– WTS-300-E - V4.1 - 20.01.2022
9.6 Procedure following power failure
After any interruption to the electricity supply, the control unit automatically switches
back to the mode it was in before the outage.
Date and time...
...are retained for at least 3 days. If the interruption is longer they may have to be
reset. When the power is restored the control unit will automatically ask for this to be
done.
Exception: If the control unit was in cleaning mode, cooling starts again immediately
and only fault code (F34) is displayed.
Is the control unit was in cleaning mode ...
...as soon as power is restored, a draining period is run for the time in [n100] in order
to empty the tank. Cleaning then continues from the start of the cleaning stage the
system was in at the time of the power failure.
The tank monitor functions ...
...are maintained during a power failure, provided the optional power pack is in-
stalled. Depending on the parameter settings, the fault code is also displayed.
Incorrect parameter configuration when switching on:
Factory configuration is restored automatically
If "dEFA" occurs in the display after switching on, the standard configuration (factory
setting) has been restored automatically. The control will not be ready for use until
confirmed with the SET-button.
This behavior occurs after a firmware-update or a factory reset.
Procedure:
Hold down the SET button for 5 seconds to confirm the factory reset
Set and store original parameterization for the tank.
Displayed when invalid storage areas are detected.
When the control is switched on, it checks whether the parameter values in the
EEprom-storage have been changed inappropriately. (This is possible in rare cases
due to EMC-effect or lightning, for example).
If an impermissible change is detected, "F.EEP" is displayed, the control is not ready
for operation.
Procedure:
Press and hold the OFF / SET / UP / DOWN buttons simultaneously until "dEFA"
appears in the display: The default configuration (factory setting) has been re-
stored.
Press button SET to confirm the factory reset.
Set and store original parameterization for the tank.
NOTE:
If "F.EEP" appears again on the display after the factory reset and after another
OFF and ON-switching, the control is irreparably defective.
NOTICE
