Temperature Control Of Refrigerator Compartment - Daewoo FR-420N Service Manual

2. Temperature Control of Refrigerator Compartment

INPUT
PCB Control Panel "TEMP" Buttons
R-sensor
A. "TEMP" Button
1. Temperature control of Refrigerator compartment
2. 5 step mode of successive temperature mode
3. Initial mode by power input: step "3"
4. Temperature will be set if the button doesn't get pressed again within 5 sec.
- Whenever pressing "TEMP" button, setting is repeated in the order of
"3" → "4" → "5" → "1" → "2" (LED LAMP ON)
B. Temperature of Refrigerator Control
1. COMP and FAN will be controlled by the on/off condition of each mode.1
2. Temperature Difference of Refrigerator each step :
Temperature Step
Temp. Diff. of Each Step
3. Temperature of Refrigerator
at step "3" OFF point: is -1.4C
4. Refrigerator ON/OFF Temp.
Difference: 1.7C
C. "S-COOL" MODE
1. Press S-COOL SWITCH
and make S-COOL led lamp on.
2. COMP & FAN are on until R-sensor
reaches to "Over Refrigeration
OFF Point", -7C
3. After the reach of -7°C , STEP "5" mode continues.
4. When "S-COOL" MODE (Quick Refrigeration Mode)
lasts for about 40 minutes, it returns to general
operation mode.
D. Temperature of Freezer Control
-It will be only controlled by using
"KNOB F LOUVER" in Freezer.
CONTROL OBJECT
PCB Control Panel LED
COMPRESSOR, FAN
"1" "2"
2.0C 2.0C
Temp
4.3 C
2.6 C
Step
10
"3" "4"
2.0C 2.0C
2.3 C
0.3 C
-1.7 C
0.6 C
-1.4 C
-3.4 C
'1' '2' '3'
FUNCTIONS
"5"
-3.7 C
ON
-5.4 C
OF
Dial
'4' '5'