JULABO FP51-SL Ultra-Low Refrigerated Circulators - Manual (Page 88)

Installation of electronic module with analog connectors
88
Error messages Description
-21 WARNING: COMPRESSOR STAGE
1 DOES NOT WORK
First-stage compressor does not work.
-22 WARNING: COMPRESSOR STAGE
2 DOES NOT WORK
Second-stage compressor does not work.
-23 WARNING: HIGH TEMPERATURE
ON COMPRESSOR STAGE 1
Excess temperature at first-stage compressor.
-24 WARNING: HIGH TEMPERATURE
ON COMPRESSOR STAGE 2
Excess temperature at second-stage compressor.
-25 REFRIGERATOR WARNING Error in the cooling machine.
-26 WARNING: STAND-BY PLUG IS
MISSING
External standby contact is open.
-30 CONFIGURATION ERROR:
CONFIRM BY PRESSING <OK> ON
CIRCULATOR
The configuration of the circulator does not correspond to
its present use.
Press OK to automatically perform a one-time modification
of the configuration.
-33 SAFETY SENSOR ALARM Excess temperature sensor short-circuited or
disconnected.
-38 EXTERNAL SENSOR SETPOINT
PROGRAMMING ALARM
Ext. Pt100 sensor input without signal and setpoint
programming set to external Pt100.
-40 NIVEAU LEVEL WARNUNG Low liquid level warning in the internal reservoir.
13. Installation of electronic module with analog connectors
Caution:
Always turn off the unit and disconnect the mains cable from the power source before
performing any service or maintenance procedures, or before moving the unit.
Configuration, installation, maintenance, and repairs on the circulator may be
performed only by qualified personnel.
ALARM REG+
E-PROG STAND-BY
A
B  Turn off the unit with the mains switch and disconnect the
power plug.
 Remove the screws (A) and remove the dummy plate.
 Carefully insert the upper edge (B) into the rear panel from
below, align the electronic module at the top and bottom, and
connect the 15-pin connector by applying light pressure.
 Attach the electronic module using the screws (A).
 The circulator is ready for use. It automatically recognizes the
installed electronic module.