Bosch B20CS50 Series Service Manual page 29

4-16. 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" → "Produce" → "Meat"→ "Fish"→ "Off")
Letters are indicated on "88" display LED
Mode
Power input
1'st Press
2'nd Press
3'rd Press
Reference
※Initial power input display ⇒ Fahrenheit degree " ℉"
※To change display for Celsius degree (℃) or Fahrenheit degree (℉)
⇒ Push "select" button 15 seconds
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 3~6 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 -
Produce 38 (3)
Meat 35 (2)
Fish 32 (0)
"Magic Cool Zone" damper
Always close
Each mode ON/OFF Control
"Off" "Vegetable"
Close Close
Close Close
1. "Magic Cool Zone" damper
2. Damper heater
Damper Open/Close point
Open Close
Temp (℃) Temp (℃)
- -
7 6
6 5
4 3
Remark
"Select"
"Fish"
Close
After 2min open
from R-Fan off,
and then close
28
CONTROL OBJECT
REMARKS
"Produce"
"Meat"
"Fish"
"Meat"
Close
Open