Malfunctions, Operating Problems And Appliance Errors - Memmert UN PLUS Series Operating Instructions Manual

Description
Temperature alarm and
"TWB" are displayed
TEMP
195
.4
TWB Set 190.0
Temperature alarm and
"TB" are displayed
TEMP
230
.4
TB

6.2 Malfunctions, operating problems and appliance errors

Error description
Displays are dark
Displays cannot be
activated
Displays suddenly look
different
Error message in timer
display
Error 23
Pt100 Error
Contact
Service
Cause
The electronic
temperature
limiter (TWB)
permanently
switched off
heating.
°C
°C
The mechanical
temperature
limiter (TB)
permanently
switched off
heating.
°C
Cause of error
External power supply
was interrupted
Miniature fuse, appliance
fuse or power module
faulty
Appliance locked by user ID
Appliance is in programme
or timer mode
Appliance is in "wrong"
mode
Appliance error
Malfunctions, warning and error messages
Action
Deactivate the alarm by pressing
the confirmation key.
Increase the difference between
the monitoring and setpoint
temperature – by either
increasing the max value of
the temperature monitoring
or decreasing the setpoint
temperature.
If the alarm continues: Contact
customer service
Switch off the appliance and
leave to cool down. Contact
customer service and have the
error rectified (e.g. by replacing
the temperature sensor).
Rectifying errors
Check the
power supply
Contact customer
service
Unlock with user ID
Wait for end of
programme or timer
Change to operating or
menu mode by pressing
MENU
the
Contact customer
service
See
page 31
page 2
page 2
See
page 20
page 2
page 51
key
page 2
35