12 Operating Instructions
5 FAULT DIAGNOSIS
Fault
Refrigeration cycle
Possible cause Repairement
A. Compressor and fan motor
running, but chiller has no
cooling capacity
Refrigerant leakage -
refrigerant level to low
Repairement by qualifi ed
refrigeration technician only
Dirty condensor Clean condensor
Ambient temp. to high Refer to technical specifi cations
Consumer capacity to high Refer to technical specifi cations
B. Compressor and fan motor is
not running
Temperature controller setting incor-
rect
Re-adjustment of temp. controller
Temperatur controller defect Replacement by qualifi ed techni-
cian only
Fan Motor defect Switch off the chiller and restart
after 3 hours only.
If compressor does not start,
replacement by qualifi ed
refrigeration technician only.
If compressor starts, refer to D.
C. Compressor does not run, but
fan motor is running
Compressor Bimetal/Clixon
switches compressor of due to
overheating
Switch off the chiller and restart
chiller after 3 hours only.
If compressor does not start,
replacement by qualifi ed refrigera-
tion technician only.
If compressor starts after 3 hours 1. Refrigerant leakage -
refrigerant level to low
2. Dirty condensor
3. Ambient temp. to high
4. Consumer capacity to high
D. Compressor is running, but
fan motor does not run
Fan Motor defect Replacement by qualifi ed techni-
cian only.
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