D39374 | Date 08/2018 45
Malfunctions, warning and error messages
6.1.2 Pressure monitoring
Description Cause Action See
Pressure alarm and
MaxAL are displayed
VACUUM
mb
Set 500 mb
In 1
586
Upper pres-
sure limit value
exceeded
Vacuum pump has too little
power. Tube may be leaking or
kinked, clean, check
Pressure alarm and
MinAL are displayed
VACUUM
mb
Set 800 mb
In 1
721
MinAL
Pressure below
lower limit
Speed control damaged or
intake valve does not close cor-
rectly.
Notify customer service. Page 2
6.2 Malfunctions, operating problems and appliance errors
Error description Cause of errors Rectifying errors See
Displays are dark External power supply
was interrupted
Check the
power supply
Page
25
Miniature fuse, appliance
fuse or power module
faulty
Contact customer
service
Page 2
Displays cannot be
activated
Appliance locked by USER
ID
Unlock with USER ID Page
62
The appliance is in pro-
gram, timer or remote
control mode (mode
"Write" or "Write +
Alarm")
Wait until the end of
the program or timer
mode or switch off the
remote control
Displays suddenly look
different
Appliance is in "wrong"
mode
Change to operating
or menu mode by
pressing the
MENU
key
Door cannot be
opened
Vacuum in the appliance Setting the atmos-
pheric pressure
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