Daewoo FRU-5711-FRS-U20DA Series Service Manual page 33

4-15. Temperature control of "Magic Cool Zone" compartment (
1. R-Fan
2. "Magic Cool Zone" sensor
3. "SELECT" button
1. "Select" button
1) Temperature control of "Magic Cool Zone" compartment
2) 4 step mode of successive temperature mode.
Initial mode by power input : "OFF"
("Off" → "Vegetable" → "Fish"→ "Meat"→ "Off")
Letters are indicated on "88" display LED
Mode
Power input
1'st Press
2'nd Press
3'rd Press
2. Normal Stepping motor Control (It is linked with Refrigerator Fan (R-Fan))
R-Fan
ON
OFF
3. Damper heater control
1) Damper open → Damper heater OFF
2) Damper close → Damper heater ON
4. How to check error mode (Temp. display and forced damper Open/Close)
1) How to start
Push "Select" button for 2 seconds.
① Initial display : "sensor temp." display. (if sensor is normal)
"Er" display. (if sensor is disconnected or short)
② Press "Select" button 1 time : "OP" display. (forced damper open )
③ Press "Select" button 2 time : "CL" display. (forced damper close )
2) How to stop
It stops automatically in 20 sec. from the start.
5. Control way for "Magic Cool Zone" sensor error.
1) If "Magic Cool Zone" sensor is disconnected or short.
2) Damper open and close by below table. Control (Condition of "Select" button)
Condition
ON
R-Fan
OFF
INPUT
CONTENTS
Display
Off -
Vegetable 3
Fish -1
Meat -3
"Magic Cool Zone" damper
Always close
Each mode ON/OFF Control
"Off" "Vegetable"
Close Close
Close Close
FRS(N)-U20EA/GA)
1. "Magic Cool Zone" damper
2. Damper heater
Damper Open/Close point
Open Close
Temp (℃) Temp (℃)
- -
9 8
3 2
1 0
Remark
"Select"
"Fish"
Close
After 2min open
from R-Fan off,
and then close
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CONTROL OBJECT
REMARKS
"Vegetable"
"Fish"
"Meat"
"Meat"
Close
Open