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Error messages Description
-20 WARNING: CLEAN CONDENSOR
OR CHECK COOLING WATER
CIRCUIT OF REFRIGERATOR
Cooling of the condenser is affected. Clean air-
cooled condenser.
Check the flow rate and cooling water
temperature on water-cooled condenser.
-21 WARNING: COMPRESSOR STAGE 1
DOES NOT WORK
Compressor stage 1 does not work.
-22 WARNING: COMPRESSOR STAGE 2
DOES NOT WORK
Compressor stage 2 does not work.
-23 WARNING: HIGH TEMPERATURE
ON COMPRESSOR STAGE 1
Excess temperature on compressor stage 1.
-24 WARNING: HIGH TEMPERATURE
ON COMPRESSOR STAGE 2
Excess temperature on compressor stage 1.
-25 REFRIGERATOR WARNING Error in the cooling machine.
-26 WARNING: STAND-BY PLUG IS
MISSING
External stand-by contact is open.
Stand-by input - see pages 23 and 30.
-30 CONFIGURATION ERROR:
CONFIRM BY PRESSING <ENTER>
ON CIRCULATOR
The configuration of the circulator does not
conform to its present use.
Press enter to automatically perform a
single modification of the configuration.
(Then contact an authorized service station).
12. Maintaining the cooling performance
To maintain the full cooling performance, clean the condenser from time
to time.
• Switch off the unit, disconnect mains power cable.
• Hold the venting grid, pull out and remove.
• Clean the ribbed condenser with a vacuum cleaner.
• Replace the venting grid.
• Switch on the unit.
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