37(45)
8.Compressor
overload
Protective device
no action
A. The heat of the return pipe’s
refrigerant is too high.
B. The high-pressure is too
high.
C. The low-pressure is too low.
D. Low load
A. Adjust the opening of the
expansion valve properly.
B. Repair and improve
C. Repair and improve
D. Increase the load
9. Return air pipe
and
compressor
shell
condensed
Protective device
no action
A. The opening of the expansion
valve is too large.
B. Too much of the refrigerant
C. Small thermal overload.
A. Adjust the opening of the
expansion valve properly.
B. Discharge part of refrigerant
C. Increase the thermal load
10.Compressor
no start or
tripped after
startup
Protective device
no action
A. Power wire breaks or
abnormal voltage
B. The temperature controller is
not set properly.
C. Overload protector not reset.
A. Check and connect the wire
according to requirement.
B. Reset the temperature
controller.
C. Reset the overload
protector.
Anti-freezing
switch trips
A. Low water temperature due
to low amount of the cold
water.
B. The temperature switch is set
too low or fault.
C. Anti-freezing switch is set
improperly or fault.
A. Repair the water pump and
remove the air from the
water pipe.
B. Correct the set point or
replace.
C. Check, weld, and repair.
11.Refrigerating
capacity can’t
reach the
standard
A. The water scalein the
evaporator is too much
B. The water scalein the
condensor is too much
C. Insufficient cooling water
D. Component blocked
E. Abnormal configuration of the
chilled water pump. .
F. Compressor aging.
G. Expansion valve broken.
A. Clean the evaporator
B. Clean the condenser
C. Increase the cooling water
amount.
D. Replace the components
and clean them.
E. Properly select the water
pump according to the
requirement (flow and lift).
F. Replace the compressor.
G. Replace the expansion
valve.
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