41
Warning messages and malfunctions
Error
Possible causes
Remedy
Error message
CONF
(is displayed for only 10
sec. after switching on)
Checksum error (error
when saving setpoint
values)
The error can be rectified just by the
controller after a setpoint parameter
has again been saved. If the error
should continue occurring, or cannot be
rectified: Contact the customer service
and replace controller (see service
manual)
Chamber fan without
function
Miniature fuse or
mains adapter faulty
Contact the customer service and read
the service manual.
Heating icon
not on
Ź
Ambient tempera-
ture too high
Setp the appliance up in a cooler room,
minimum setpoint temperature = am-
bient temp. + 8 °C
Ź
Temperature in
appliance higher
than set setpoint
temperature
Wait until appliance has cooled down.
icon is permanently
lit up
Temperature fuse has
responded
Ź
Switch off appliance and leave to
cool down
Ź
Check temperature limiter
The appliance is only operational again
after it has cooled down and the error
has been eliminated.
CAL O
2
ERROR
Fault in oxygen calibra-
tion
Open the door for one minute and
start calibration again. If the message
appears gain: Contact the customer
service.
ERROR O
2
Sensor
Oxygen sensor faulty
Contact the customer service