JULABO Magnum 91 Temperature System User Manual
Page 70
Remote control
70
Error messages
Description
-13 WARNING : VALUE EXCEEDS
TEMPERATURE LIMITS
Value lies outside the adjusted range for the high and low
temperature warning limits. But value is stored.
-14 TEMPERATURE/LEVEL ALARM
Safety temperature alarm
-15 EXTERNAL SENSOR ALARM
External control selected, but external Pt100 sensor not
connected.
-16 TRIAC/RELAY CONNECTION
OPEN
Heating circuit interrupted.
-17 TRIAC SHORTED
Heating circuit short-circuited.
-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.
-26 WARNING: STAND-BY PLUG IS
MISSING
External stand-by contact is open.
Stand-by input - see pages 42 and 63.
-31 INTERNAL COMMUNICATION
ERROR
Communication between remote module RD and instrument
interrupted.
-40 NIVEAU LEVEL WARNING
Low liquid level warning in the internal reservoir.
-27 WARNING:
COMPRESSOR STAGE 1
OVERPRESSURE OR OVERTEMP
The compressors of both stages were switched off.
The high pressure controller in stage 1 measures an
excessive pressure. As soon as the pressure in stage 2
reaches the lower switching point, the compressors are
switched on again one after the other.
The motor winding protection in stage 1 measures an
excessive temperature.
As soon as the temperature in stage 1 reaches the lower
switching point, the compressors are switched on again one
after the other.
Check the cooling water supply line.
Wait until the pressure compensation in stage 1 is finished
and switch on the unit again after waiting for about 25
minutes.
-28 WARNING:
COMPRESSOR STAGE 1 HOTGAS-
OVERTEMP
The compressor of both stages were switched off.
The exit temperature of stage 1 is too high. As soon as the
temperature reaches the lower switching point, and – as second
condition – the pressure proportions allow it, the compressors are
switched on again delayed.