7-3. Defrost Mode
INPUT
CONTROL OBJECT
●
Total COMP Work Time
●
COMP Working Rate
●
Total Door Open Time
●
RT
●
Defrost Mode
A.
In providing initial power or returning power failure,
if the temperature at the D-sensor is under 3.5
°
C, Defrost Mode starts. (It proceeds from “PRE-COOL”.)
[
“PRE-COOL” → Heater on → Pause(10 min) → General operation
]
B.
Initial defrost mode starts after “Prevention of Compressor Restart”. (Refer to Function No. 5)
●
Initial Defrost
●
Flow Chart of
Defrost Start
Start
Total time ≥ 60hrs
COMP time ≥ 14hrs
COMP time ≥ 6hrs
COMP Rate ≥ 80%
Any error?
Total door open time
≥ 2 min?
END
Defrosting start
COMP time ≥ 2hrs
YES
YES
YES
YES
YES
YES
NO
N0
N0
N0
NO
NO
NO
NO
19
Summary of Contents for FN-T650NTB SERIES
Page 1: ...RTT512NBG RTT512NWG April 2016 ...
Page 6: ...5 3 Cold Air Circulation ...
Page 7: ...6 4 Wiring Diagram ...
Page 8: ...7 5 PCB CIRCUIT DIAGRAMS ...
