14 Operating Instructions
(parts are identifi ed on the wiring diagram)
Fault Possible cause Repairement
Compressor clixon
cuts out
Compressor current too high Incorrect power supply L1, L2, L3
testing of ocurrent (ampere)
Current and power supply OK:
compressor or clixon defect
Compressor defect Repairement only by refrigeration
specialist
Clixon (Kriwan) defect Repairement only by refrigeration
specialist
Evaporation temp. too high Fluid (water, emulsion, oil) temp.
too high
Low pressure switch Resetting of low pressure switch
tripped
Fluid (water, emulsion, oil) Testing of correct fl uid level -
level in tank too low refi lling tank
Refrigerant leakage Repairement only by refrigeration
specialist
Expansion valve defect Repairement only by refrigeration
specialist
Option:solenoid valve defekt Repairement only by refrigeration
specialist
Fluid temperature too low Refer to technical specifi cation
Ambient temp. too low Refer to technical specifi cation
High pressure switch Resetting of high pressure switch
tripped
Clogged or dirty airfi lter
Clogged or dirty condensor Clean condensor
Fan motor rotation - Testing of correct rotation -
wrong way around see rotation arrow on condensor
Fan motor defect Replacement of fan motor
Fluid (water, emulsion,oil) Refer to technical specifi cation
temperature to high
Watervalve at watercooled Testing of correct waterfl ow
units
Ambient temperature to high Measure air inlet temp. at
condensor refer to chapter 3
5 FAULT DIAGNOSIS
(Option)
Replace airfilter (EU 2)
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