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7.2 Faults and treatment
The sensor has not been
connected correctly
Check the circuit connectors，and connect it again
The condenser or evaporator is
dirty and blocked
Clean the condenser or evaporator
Refrigerating capacity isn’t
enough
Please consult usability professional
The temperature setting is fault
Set the temperature again
Frequent high
system pressure
alarm
The condenser or evaporator is
dirty and blocked
Clean the condenser or evaporator
Condenser temperature sensor
wrongly sends alarm
Change the condenser temperature sensor
Internal cycling path is blocked
Check if there are block to stick the internal
cycling path
Refrigerating system can’t stop
Check if the air-conditioner reaches the
refrigeration stop conditions but the actual status
doesn't stop, if yes, inform the AC maker to deal
with it.
Evaporator temperature sensor
wrongly sends alarm
Change the evaporator temperature sensor
There is no cooling demand
Check if refrigeration is not needed
Check if compressor is protected
Compressor line has not been
connected correctly
Check the compressor line，and connect it again
Compressor protect switch or
motor is fault
Check if compressor protect switch is ok, and
change compressor protect switch if fault; if motor
is fault, change the compressor
Internal fan line has not been
connected correctly
Check the Internal fan line，and connect it again
Check if there are block to stick the fan or not, and
clear the block
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