D33451 | Date 01/2018 43
Malfunctions, warning and error messages
Description Cause Action See
Alarm indicates that the
lower CO
2
alarm limit
was undercut
CO2
Set 15
.0%
%
12.0
Check if the door is closed.
Check that the lines are con-
nected correctly, check the valve
and level of the gas bottle. If
necessary, connect a new gas
bottle.
If the error occurs again, contact
customer service.
Page 21
Page 2
6.1.4 O
2
monitoring
Description Cause Action See
Alarm indicates that the
upper O
2
alarm limit
was exceeded
O2
Set 10
.0%
%
13.0
Check the N
2
supply and the fill
level of the gas bottle.
If the error occurs again, contact
customer service.
Page 2
Alarm indicates that the
lower O
2
alarm limit was
undercut
O2
Set 15
.0%
%
12.0
Open the door for 30 sec. and
wait to see if the appliance then
steadily adjusts to the setpoint.
If the error occurs again, contact
customer service. Page 2
6.2 Malfunctions, operating problems and appliance errors
Description Cause Action See
Displays are dark External power supply
was interrupted
Check the
power supply
Page 20
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 61
The appliance is in pro-
gramme, timer or remote
control mode (mode "Write"
or "Write + Alarm")
Wait until the end of
the programme or
timer mode or switch
off the remote control
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