Daewoo FRS-20BD, Service Manual

Page: 16 / 102

15
1. Defrost Mode
INPUT CONTROL OBJECT
CONTENTS REMARKS
1. Defrosting Cycle
1. Comp
2. F-Fan
3. R-Fan
4. D-Heater
Pre-Cool
Pause
Fan-Delay
Heater
Defrosting
Pre-Cool
1) Time : 50 minutes
2) Comp , F-fan : ON
R-fan : Control
D-HTR : OFF
3) If F-sensor
≤
-27C, then Pre-Cool becomes OFF.
Heater Defrosting
1) Comp, F-fan, R-fan : OFF, D-HTR : ON
2) Time limit
30 seconds : Heater is ON regardless of D-sensor
temperature right after defrosting start.
30 minutes : in case of D1- Error
80 minutes : in normal control state
3) If D-sensor
≥
10C, Heater Defrosting is OFF
Pause
Time : 7 minutes
Comp, F-fan, R-fan, Heater etc. : OFF
Fan-Delay
Time : 5 minutes
Comp : ON and F-fan, R-fan, Heater : OFF
4-2. Defrost Mode
2.The defrost mode start with the following conditions
1) Total operation time of comp. becomes : 6,8,10,……… 24 hours.
①
Total door open time : 3 minutes
(Any door, F or R open time is over 3 minutes.)
②
Any error mode : R1, F1, D1, F3, RT/S, Door-switch etc.)
2) Defrosting mode starts unconditionally as long as total comp. work time is
24 hours, even if the above conditions (
①
~
②
) are not satisfied.
3) Defrosting mode starts immediately as long as total time of [comp. ON +
comp. OFF] is over 60 hours, even if the above
①
and
②
conditions are not
satisfied.
3. In providing initial power (or returning power failure)
If D-sensor temp.
≤
3.5
℃
, defrosting mode starts .