Memmert Universal ovens U, Incubators I, Sterilisers S - Manual (Page 30)

30 D24022 | Date 10/2014
Malfunctions, warning and error messages
6. Malfunctions, warning and error messages
Warning!
After removing covers, live parts may be exposed. You may receive
an electric shock if you touch these parts. Malfunctions requiring
work inside the appliance may only be rectifi ed by electricians. Ob-
serve the separate service manual for this.
Do not try to rectify appliance errors yourself but contact the MEMMERT customer service
department (see page 2) or an authorised service point.
In case of enquiries, please always specify the model and appliance number from the name-
plate (see page 12).
6.1 Warning messages of the temperature monitoring function
Description Cause Action See
Temperature alarm and
"TWW" are displayed
TEMP
TWW Set 190.0 °C
195
.4 °C
The adjustable
undertemperature
/ overtemperature
controller (TWW)
has assumed heat-
ing control.
Increase the difference between
the monitoring and setpoint
temperature – by either in-
creasing the max value of the
temperature monitoring ( MAX
temp ) or decreasing the set-
point temperature.
If the alarm continues: Contact
customer service
page
37
page 2
Temperature alarm and
"TWB" are displayed
TEMP
TWB Set 190.0 °C
195
.4 °C
The electronic
temperature
limiter (TWB) per-
manently switched
off heating.
Deactivate the alarm by pressing
the confirmation key.
Increase the difference between
the monitoring and setpoint
temperature – by either in-
creasing the max value of the
temperature monitoring ( MAX
temp ) or decreasing the set-
point temperature.
If the alarm continues: Contact
customer service
page
37
page 2
Temperature alarm and
TB are displayed
TEMP
TB
230
.4 °C
The mechanical
temperature lim-
iter (TB) perma-
nently switched
off heating.
Switch off the appliance and
leave to cool down. Contact
customer service and have the
error rectified (e.g. by replacing
the temperature sensor).
page 2