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SERVICE MANUAL
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Chapter 6 Control principle of electronic component
6-1. Fan cooling system
(1)Air escaper's open and close is controlled by fridge sensor R SNR.
(2)Air escaper is closed firstly and then opened once, then open or close of air escaper is controlled
according condition (1).
(3)If air escaper is closed more than an hour, it will be opened at a time. Then open or close of air
escaper is controlled according fridge sensor R SNR.
6-2. Ice maker system
6-3. Defrost function
Refrigerator will start defrosting for the 1
After refrigerator runs normally, the refrigerator will start defrosting after 30 hours' operation when the
environment temperature is over 28℃; or after 49hours'operation when the environment temperature
is not over 28℃.
When the refrigerator runs normally, the compressor continuously runs for 90minutes, or after
defrosting, the compressor continuously runs for 180minutes, or the air door of the refrigerating
chamber continuously opens for 60minutes, or the temperature of the freezing sensor is over -5℃ and
the temperature of the refrigerating sensor is equal or higher than the sum of the set refrigerating
temperature and 6℃, when the environment temperature is over 28℃, the refrigerator will start
defrosting after 12hours' operation. When the environment temperature is equal or lower than 28℃,
the refrigerator will start defrosting after 25hours' operation.
During the process of turning on the compressor, the air door of the refrigerating chamber never
reaches to the turning off point, and then the refrigerator will start defrosting after 8hours.
When the temperature of the defrosting sensor reaches to 8℃ during defrosting, the refrigerator will
log out of defrosting mode.
The compressor is stop and fridge air escaper is close when defrosting.
If the defrosting time is over 90minutes, the refrigerator will start defrosting control after 5hours'
operation, until the temperature of the defrosting sensor reaches to 8℃ in 90minutes, then the
refrigerator starts defrosting control normally.
The product can enter into defrosting mode, and exit defrosting mode after the defrosting time is more
st
time after 8 hours of the initial operation.
Issue
Rev.
33
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