Service manual, 2016-12
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Step2:change the main PCB
Step3:change the display PCB
Check the temperature of F room and check whether the
door seal fan motor and compressor of F room operate
normally
9.9Defrosting function
1.Defrost the freezing chamber as per the accumulative operation time of the Compressor2.If power
failure occurs abruptly to the Compressor and the defrosting sensor in freezing chamber is less than 0
o
C
after powering on, then first conduct defrosting once. If more than 0
o
C, then defrosting is not needed.
3.After that, conduct defrosting according to using condition and ambient temperature in a period
between 6 and 24 hours as per the accumulative operation time of the Compressor.
9.10Test mode
Mandatory Defrost
1) enter into
Press the button both“∧”and “∨”for 3senconds, it will enter into mandatory defrost, the display
panel will display figure “3”
If the defrosting sensor failure happen, the heater will work 20 minutes, then turn off,. If the defrosting
sensor failure happen during the defrosting, the heater only work 3 minutes after that, then turn off
2) Exit
★ exit manually: under the state of mandatory defrost, press both button both “∧”and “∨” for 3
seconds, it will exit the mandatory defrost after 3 minutes
★ Exit automatically : defrost for 3 minutes ,then judge the exiting condition for exiting.
3) working state, same as the normal defrosting
9.11Self-diagnosis
Entry condition
With 3 seconds after power on, if there is no sensor failure and the actual measured temperature ≥
0℃, it will enter into self-diagnosis
Process of Self-diagnosis
1. Switch on the defrosting heater for 5 seconds, then switch off for 5 seconds
2. Switch on the fan motor for 5 seconds, then switch off for 5 seconds
3. turn on the fan motor and compressor at same time
4.it will exit the self-diagnosis after 20 minutes.
If there is sensor failure happen, it will exit the Self-diagnosis immediately
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