Daewoo FRS-2021 Service Manual page 25

Defrosting Mode
INPUT
1. Defrosting Cycle
1. Defrosting Mode
Pre-Cool
Heater
Defrosting
Pause
Fan Delay
* Output control and time limit of each defrosting mode
PRE-COOL
COMP ON
F-FAN ON
R-FAN Control
HEATER OFF
Time Limit 50 min.
2. Initial Defrosting
If D-sensor < 3.5C, defrosting mode starts from Pre-Cool at initial power input or
=
first plugin.
CONTENTS
1) Time ; 50 minutes
2) Comp. / F-fan : ON
R-fan : Control
Heater : OFF
3) If F-sensor < - 27C, PRE-COOL becomes OFF.
=
1) If D-sensor > 10C, Heater becomes OFF.
=
2) In case of Heater return by time limit of 40 or 80 min
(F3-Error)
3) Heater is ON for 30 minutes (time limit) in case of D-
sensor error.
4) Time limit
a. 30 seconds : Heater is ON regardless of D-sensor
temperature right after defrosting start.
b. 30 minutes : in case of D1-Error
c. 80 minutes : in normal control state
1) Time : 7 minutes
Comp., F-fan, R-fan, Heater : OFF
1) Time : 5 minutes
Comp. : ON
F/R-fan, Heater : OFF
Heater Defrosting
OFF
OFF
OFF
ON
a. 80 min.
b. 30 min.
(in case of D1-Error)
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Control Object
1. COMP
2. F-FAN
3. R-FAN
4. HEATER
Fan
Pause
Delay
OFF ON
OFF OFF
OFF OFF
OFF OFF
7 min. 5 min.
REMARKS
C-fan and comp.
are linked.