A. When initial power input or returning power failure.
if the temperature at the Defrost Sensor is below 3.5 C, Defrost Mode starts.
( It prceeds from 'PRE-COOL' ),
[ PRE-COOL - Heater On - Pause (10min) - Normal Operation ]
B. Initial defrost mode starts after 'Prevention of Compressor Restart'. ( Refer to function No. 5 )
FUNCTIONS
Initial Defrost
Flow Chart of
Defrost Start
Defrost Mode
CONTROL OBJECT
INPUT
Total COMP Work Time / COMP Working Rate
Total Door Open Time / RT
3. Defrost Mode
Comp time >= 2 hours
Start
Total time >= 60 hours
Comp time >= 14 hours
Comp time >= 6 hours
Comp Rate >= 80%
Any Error?
RT Temp >= 40C
Total door open time >= 3min?
END
Defrosting Start
Yes
Yes
Yes
Yes
Yes
Yes
Ye
Yes
No
No
No
No
No
No
No
No
12
