JULABO CF41 Cryo-Compact Circulators - Manual (Page 63)

Cryo-Compact Circulators
63
9. Troubleshooting guide / Error messages
XXXXX
ALARM
CODE 01
+
Alarm with a complete shutdown of the unit
Whenever the microprocessor electronics registers a failure, a complete
shutdown of the compressor, heater and circulating pump is performed.
The alarm light „ “ illuminates and a continuous signal tone sounds.
The VFD-COMFORT-DISPLAY indicates the cause for the alarm in form
of a code.
XXXXX
WARNING
CODE 40
Warning without a complete shutdown of the unit
The VFD-COMFORT-DISPLAY indicates the cause for the warning in
form of a code and an acoustic signal sounds in regular intervals.
These messages appear every 10 seconds.
Press enter to quit the audible signal.
Press to indicate the help text in the LCD DIALOG-DISPLAY when
alarm messages appear.
ALARM
CODE 01

Insufficient liquid
level or float is
defective.
 The Cryo-Compact Circulator is operated without bath fluid, or the
liquid level is insufficient. Replenish the bath tank with the bath fluid.
 Tube breakage has occurred (insufficient filling level due to
excessive bath fluid pumped out). Replace the tubing and replenish
the bath tank with the bath fluid.
 The float is defect (e. g., because damaged in transit). Repair by
authorized JULABO service personnel.

WARNING
CODE 03

Actual temperature
above high tempera-
ture value.
ALARM
CODE 03

Actual temperature
above high tempera-
ture value.
 Excess temperature warning
or
Excess temperature alarm
Warn-Type: Set to
>Warning< or >Alarm<
WARNING
CODE 04

Actual temperature
below low tempera-
ture value.
ALARM
CODE 04

Actual temperature
below low tempera-
ture value.
 Low temperature warning
or
Low temperature alarm.
Warn-Type: Set to
>Warning< or >Alarm<
ALARM
CODE 05

Internal working
sensor short-circuited
or interrupted.
 Cable of the working temperature sensor interrupted or short-
circuited.