Daewoo FR-540N Service Manual page 41

Control
NO.
Function
8 Defrost
mode
Control
Objects
2. Description
Start
1) It enters into the defrost mode at 15 hours unconditionally.
2) It enters into the defrost mode at 6, 9, 12 hours
conditionally.
3) Flow chart of determination defrost mode.
NO
Does the operation time elapse for 15 hours?
Does the operation time elapse for 60 hours?
Does the operation time elapse for 6 hours?
Is the COMP operation rate greater than 80%?
COMP. 1. Pre-cool step
F-fan
1) Time : 50 min.
R-fan
Heater
2) COMP. and F-fan are on.
3) R-fan controls normally with temperature 1˚C higher than
the off point which controlles R-fan in normal status.
Contents
3 6 9
(COMP. on accumulation time)
Start
TOTAL
Does the time elapse for 3 hours?
YES
COMP
NO
COMP
NO
COMP
YES
Are various errors occurred?
NO
Is RT greater than 35˚C?
NO
NO
Does the DOOR OPEN accumulation
time elapse for 10 minutes?
NO
End
39
12 15
YES
YES
NO
YES
YES
YES
YES
Entering into
defrosting mode
Remark