Display Buzzer Description Measure
3
Connection problem:
n Synchronisation error between con-
trol unit and monitoring circuit.
n No secured function of the cooling
controller.
n Transfer chilled goods to a new
location.
n Contact the service department.
3
Control error:
n Error during self-test in the cooling
controller.
n The monitoring circuit takes over
the temperature control.
n Contact the service department.
3
Door-open alarm:
n Door is open for more than 60 sec-
onds.
n Close the door.
3
Door-open alarm:
n Door is open for more than 180
seconds.
n Close the door.
3
Battery defective:
n The battery must be replaced.
n The temperature documentation
and alarm in the event of power
failure fail.
n Switch off the alarm.
n Inform the service department.
n Replace the battery
Ä
‘Service con-
tact’ on page 4.
3
Power failure:
n Unit is not cooling.
n Alarm is active.
n The remote warning contact is trig-
gered.
n Check power supply.
3
Temperature alarm (high):
n The upper temperature warning
limit is reached or exceeded (for
example due to very warm chilled
goods or because the door was
open too long).
However, the displayed (mean)
value may still be below the temper-
ature warning limit. The display
alternates between the mean value
and the temperature at the warmest
point.
n View and check the temperature
warning limit
Ä
Chapter 6.2.2.2
‘Displaying and changing the tem-
perature warning limits’ on page 40.
n If necessary, correct the values of
the temperature warning limits.
n Monitor the temperature progres-
sion.
n If it does not normalise, contact the
service department.
n Transfer chilled goods to a new
location.
Status displays and error messages
Error messages
23.05.2023Refrigerator/freezer MED series68
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